./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:30:05,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:30:05,198 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:30:05,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:30:05,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:30:05,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:30:05,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:30:05,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:30:05,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:30:05,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:30:05,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:30:05,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:30:05,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:30:05,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:30:05,239 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:30:05,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:30:05,240 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:30:05,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:30:05,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:30:05,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:30:05,241 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:30:05,241 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:30:05,241 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:30:05,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:30:05,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:30:05,242 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:30:05,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:30:05,242 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:30:05,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:30:05,243 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:30:05,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:05,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:05,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:05,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:05,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:30:05,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:30:05,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:30:05,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:30:05,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:05,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:30:05,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:30:05,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:30:05,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:30:05,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:30:05,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:30:05,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:30:05,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:30:05,245 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_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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 -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-11-28 02:30:05,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:30:05,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:30:05,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:30:05,658 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:30:05,658 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:30:05,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack_longer-1.i [2024-11-28 02:30:09,553 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/95537fee5/98d6d7fefe384502b83642b588ca27ab/FLAG4741909c1 [2024-11-28 02:30:09,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:30:09,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/sv-benchmarks/c/pthread/stack_longer-1.i [2024-11-28 02:30:09,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/95537fee5/98d6d7fefe384502b83642b588ca27ab/FLAG4741909c1 [2024-11-28 02:30:10,006 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/95537fee5/98d6d7fefe384502b83642b588ca27ab [2024-11-28 02:30:10,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:30:10,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:30:10,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:30:10,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:30:10,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:30:10,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:10" (1/1) ... [2024-11-28 02:30:10,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fa25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:10, skipping insertion in model container [2024-11-28 02:30:10,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:30:10" (1/1) ... [2024-11-28 02:30:10,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:30:10,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:30:10,978 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:30:11,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:30:11,179 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:30:11,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11 WrapperNode [2024-11-28 02:30:11,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:30:11,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:30:11,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:30:11,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:30:11,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,288 INFO L138 Inliner]: procedures = 277, calls = 432, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 554 [2024-11-28 02:30:11,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:30:11,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:30:11,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:30:11,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:30:11,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,339 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-11-28 02:30:11,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:30:11,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:30:11,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:30:11,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:30:11,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (1/1) ... [2024-11-28 02:30:11,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:30:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:11,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:30:11,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:30:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:30:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:30:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:30:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:30:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:30:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:30:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:30:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:30:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:30:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:30:11,500 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 02:30:11,752 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:30:11,753 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:30:13,146 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:30:13,147 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:30:20,731 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:30:20,731 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:30:20,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:20 BoogieIcfgContainer [2024-11-28 02:30:20,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:30:20,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:30:20,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:30:20,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:30:20,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:30:10" (1/3) ... [2024-11-28 02:30:20,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adaf375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:30:20, skipping insertion in model container [2024-11-28 02:30:20,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:30:11" (2/3) ... [2024-11-28 02:30:20,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adaf375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:30:20, skipping insertion in model container [2024-11-28 02:30:20,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:20" (3/3) ... [2024-11-28 02:30:20,748 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-11-28 02:30:20,768 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:30:20,770 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-1.i that has 3 procedures, 47 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-28 02:30:20,771 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:30:20,893 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:30:20,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 124 flow [2024-11-28 02:30:21,038 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-11-28 02:30:21,042 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:30:21,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 9/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 145 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2024-11-28 02:30:21,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 124 flow [2024-11-28 02:30:21,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 52 transitions, 116 flow [2024-11-28 02:30:21,076 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:30:21,103 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;@1830adb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:30:21,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 02:30:21,141 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:30:21,142 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-28 02:30:21,142 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:30:21,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:21,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:21,144 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:21,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2107965218, now seen corresponding path program 1 times [2024-11-28 02:30:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:21,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719610967] [2024-11-28 02:30:21,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:21,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:22,266 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 02:30:22,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:22,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719610967] [2024-11-28 02:30:22,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719610967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:22,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:30:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812858271] [2024-11-28 02:30:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:22,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:30:22,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:22,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:30:22,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:30:22,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:22,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 02:30:22,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:22,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:22,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:22,875 INFO L124 PetriNetUnfolderBase]: 459/880 cut-off events. [2024-11-28 02:30:22,875 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-28 02:30:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1652 conditions, 880 events. 459/880 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4523 event pairs, 245 based on Foata normal form. 94/846 useless extension candidates. Maximal degree in co-relation 1574. Up to 520 conditions per place. [2024-11-28 02:30:22,894 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-28 02:30:22,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 227 flow [2024-11-28 02:30:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:30:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:30:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-28 02:30:22,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-11-28 02:30:22,920 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 116 flow. Second operand 4 states and 117 transitions. [2024-11-28 02:30:22,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 227 flow [2024-11-28 02:30:22,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:30:22,938 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 100 flow [2024-11-28 02:30:22,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-28 02:30:22,950 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-11-28 02:30:22,950 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 100 flow [2024-11-28 02:30:22,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 02:30:22,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:22,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:22,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:30:22,951 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:22,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2107965217, now seen corresponding path program 1 times [2024-11-28 02:30:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918300285] [2024-11-28 02:30:22,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:23,972 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 02:30:23,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918300285] [2024-11-28 02:30:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918300285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:23,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:23,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108437039] [2024-11-28 02:30:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:23,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:30:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:23,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:30:23,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:24,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:24,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 02:30:24,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:24,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:24,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:24,803 INFO L124 PetriNetUnfolderBase]: 755/1387 cut-off events. [2024-11-28 02:30:24,803 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-28 02:30:24,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1387 events. 755/1387 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7436 event pairs, 125 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 810. Up to 848 conditions per place. [2024-11-28 02:30:24,823 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 87 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-28 02:30:24,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 423 flow [2024-11-28 02:30:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:30:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:30:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-11-28 02:30:24,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-11-28 02:30:24,830 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 100 flow. Second operand 6 states and 194 transitions. [2024-11-28 02:30:24,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 423 flow [2024-11-28 02:30:24,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:30:24,837 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2024-11-28 02:30:24,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-28 02:30:24,839 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-28 02:30:24,840 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2024-11-28 02:30:24,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 02:30:24,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:24,840 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:24,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:30:24,842 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:24,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2050685231, now seen corresponding path program 1 times [2024-11-28 02:30:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562894583] [2024-11-28 02:30:24,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:25,102 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 02:30:25,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:25,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562894583] [2024-11-28 02:30:25,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562894583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:25,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:25,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492573088] [2024-11-28 02:30:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:25,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:30:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:25,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:30:25,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:30:25,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:25,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 02:30:25,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:25,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:25,592 INFO L124 PetriNetUnfolderBase]: 668/1270 cut-off events. [2024-11-28 02:30:25,592 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-28 02:30:25,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2683 conditions, 1270 events. 668/1270 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6590 event pairs, 181 based on Foata normal form. 34/1183 useless extension candidates. Maximal degree in co-relation 2598. Up to 721 conditions per place. [2024-11-28 02:30:25,605 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 67 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-11-28 02:30:25,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 376 flow [2024-11-28 02:30:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:30:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-11-28 02:30:25,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-28 02:30:25,608 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 5 states and 160 transitions. [2024-11-28 02:30:25,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 376 flow [2024-11-28 02:30:25,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:30:25,619 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 161 flow [2024-11-28 02:30:25,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-28 02:30:25,620 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2024-11-28 02:30:25,621 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 161 flow [2024-11-28 02:30:25,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 02:30:25,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:25,623 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:25,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:30:25,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:25,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash -344677788, now seen corresponding path program 1 times [2024-11-28 02:30:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:25,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430159687] [2024-11-28 02:30:25,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:25,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:25,866 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 02:30:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430159687] [2024-11-28 02:30:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430159687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:25,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:25,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:25,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282409747] [2024-11-28 02:30:25,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:25,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:30:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:25,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:30:25,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:30:25,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:25,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 02:30:25,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:25,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:25,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:26,428 INFO L124 PetriNetUnfolderBase]: 976/1831 cut-off events. [2024-11-28 02:30:26,429 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2024-11-28 02:30:26,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4033 conditions, 1831 events. 976/1831 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9747 event pairs, 469 based on Foata normal form. 0/1699 useless extension candidates. Maximal degree in co-relation 3362. Up to 1060 conditions per place. [2024-11-28 02:30:26,445 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 73 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-11-28 02:30:26,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 429 flow [2024-11-28 02:30:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:30:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:30:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-28 02:30:26,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6318181818181818 [2024-11-28 02:30:26,448 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 161 flow. Second operand 4 states and 139 transitions. [2024-11-28 02:30:26,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 429 flow [2024-11-28 02:30:26,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:30:26,459 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 197 flow [2024-11-28 02:30:26,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-28 02:30:26,462 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-11-28 02:30:26,462 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 197 flow [2024-11-28 02:30:26,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 02:30:26,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:26,463 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:26,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:30:26,463 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:26,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 355834357, now seen corresponding path program 1 times [2024-11-28 02:30:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031734602] [2024-11-28 02:30:26,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:26,618 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 02:30:26,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:26,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031734602] [2024-11-28 02:30:26,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031734602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:26,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:26,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430820698] [2024-11-28 02:30:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:26,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:26,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:26,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:26,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:26,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 02:30:26,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:26,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:26,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:27,268 INFO L124 PetriNetUnfolderBase]: 1100/2025 cut-off events. [2024-11-28 02:30:27,269 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-11-28 02:30:27,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4879 conditions, 2025 events. 1100/2025 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10938 event pairs, 511 based on Foata normal form. 22/1918 useless extension candidates. Maximal degree in co-relation 4019. Up to 1290 conditions per place. [2024-11-28 02:30:27,286 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 62 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-11-28 02:30:27,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 397 flow [2024-11-28 02:30:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:30:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-28 02:30:27,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-11-28 02:30:27,289 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 197 flow. Second operand 3 states and 106 transitions. [2024-11-28 02:30:27,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 397 flow [2024-11-28 02:30:27,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 391 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:30:27,299 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 203 flow [2024-11-28 02:30:27,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-28 02:30:27,300 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-11-28 02:30:27,300 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 203 flow [2024-11-28 02:30:27,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 02:30:27,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:27,301 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:27,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:30:27,301 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:27,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash 351165568, now seen corresponding path program 1 times [2024-11-28 02:30:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47190276] [2024-11-28 02:30:27,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:27,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:27,534 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 02:30:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47190276] [2024-11-28 02:30:27,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47190276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:27,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:27,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:30:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679635707] [2024-11-28 02:30:27,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:27,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:27,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:27,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:27,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:27,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 02:30:27,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:27,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:27,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:27,959 INFO L124 PetriNetUnfolderBase]: 1006/1847 cut-off events. [2024-11-28 02:30:27,961 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-11-28 02:30:27,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 1847 events. 1006/1847 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9856 event pairs, 361 based on Foata normal form. 12/1735 useless extension candidates. Maximal degree in co-relation 3862. Up to 1410 conditions per place. [2024-11-28 02:30:27,979 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 49 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-28 02:30:27,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 313 flow [2024-11-28 02:30:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:30:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-28 02:30:27,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-28 02:30:27,980 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 203 flow. Second operand 3 states and 96 transitions. [2024-11-28 02:30:27,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 313 flow [2024-11-28 02:30:27,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 303 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-28 02:30:27,989 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 180 flow [2024-11-28 02:30:27,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-11-28 02:30:27,992 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-11-28 02:30:27,992 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 180 flow [2024-11-28 02:30:27,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 02:30:27,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:27,993 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:27,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:30:27,993 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:27,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -610660713, now seen corresponding path program 1 times [2024-11-28 02:30:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261111819] [2024-11-28 02:30:27,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261111819] [2024-11-28 02:30:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261111819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904858173] [2024-11-28 02:30:28,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:28,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:28,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:28,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:30:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:29,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:30:29,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:29,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:29,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904858173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:29,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-28 02:30:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001029836] [2024-11-28 02:30:29,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:29,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:30:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:29,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:30:29,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:30:29,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:29,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 180 flow. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:29,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:29,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:29,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:33,409 INFO L124 PetriNetUnfolderBase]: 4128/7713 cut-off events. [2024-11-28 02:30:33,409 INFO L125 PetriNetUnfolderBase]: For 2485/2485 co-relation queries the response was YES. [2024-11-28 02:30:33,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17855 conditions, 7713 events. 4128/7713 cut-off events. For 2485/2485 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 50406 event pairs, 309 based on Foata normal form. 192/7388 useless extension candidates. Maximal degree in co-relation 7413. Up to 1423 conditions per place. [2024-11-28 02:30:33,505 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 327 selfloop transitions, 45 changer transitions 0/386 dead transitions. [2024-11-28 02:30:33,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 386 transitions, 1892 flow [2024-11-28 02:30:33,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:30:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:30:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 685 transitions. [2024-11-28 02:30:33,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2024-11-28 02:30:33,512 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 180 flow. Second operand 20 states and 685 transitions. [2024-11-28 02:30:33,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 386 transitions, 1892 flow [2024-11-28 02:30:33,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 386 transitions, 1850 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-28 02:30:33,538 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 592 flow [2024-11-28 02:30:33,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-11-28 02:30:33,539 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-11-28 02:30:33,542 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 592 flow [2024-11-28 02:30:33,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:33,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:33,543 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] [2024-11-28 02:30:33,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:30:33,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:33,748 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:33,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash -437922141, now seen corresponding path program 1 times [2024-11-28 02:30:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358458568] [2024-11-28 02:30:33,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:33,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:34,117 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 02:30:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:34,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358458568] [2024-11-28 02:30:34,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358458568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:34,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:34,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497118697] [2024-11-28 02:30:34,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:34,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:34,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:34,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:34,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:34,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 592 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 02:30:34,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:34,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:34,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:35,024 INFO L124 PetriNetUnfolderBase]: 1833/3825 cut-off events. [2024-11-28 02:30:35,027 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-11-28 02:30:35,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9376 conditions, 3825 events. 1833/3825 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 22272 event pairs, 372 based on Foata normal form. 234/3900 useless extension candidates. Maximal degree in co-relation 9174. Up to 2311 conditions per place. [2024-11-28 02:30:35,090 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 70 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-28 02:30:35,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 609 flow [2024-11-28 02:30:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:30:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-28 02:30:35,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-11-28 02:30:35,092 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 592 flow. Second operand 3 states and 94 transitions. [2024-11-28 02:30:35,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 609 flow [2024-11-28 02:30:35,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 561 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-11-28 02:30:35,117 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 389 flow [2024-11-28 02:30:35,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-28 02:30:35,119 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2024-11-28 02:30:35,121 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 389 flow [2024-11-28 02:30:35,122 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 02:30:35,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:35,122 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] [2024-11-28 02:30:35,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:30:35,123 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:35,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:35,123 INFO L85 PathProgramCache]: Analyzing trace with hash -689654469, now seen corresponding path program 1 times [2024-11-28 02:30:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:35,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055377241] [2024-11-28 02:30:35,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:35,525 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 02:30:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055377241] [2024-11-28 02:30:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055377241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987240381] [2024-11-28 02:30:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:35,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:30:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:35,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:30:35,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:35,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:35,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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 02:30:35,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:35,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:35,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:36,426 INFO L124 PetriNetUnfolderBase]: 1838/3723 cut-off events. [2024-11-28 02:30:36,426 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2024-11-28 02:30:36,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9356 conditions, 3723 events. 1838/3723 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21370 event pairs, 1002 based on Foata normal form. 0/3594 useless extension candidates. Maximal degree in co-relation 7887. Up to 2166 conditions per place. [2024-11-28 02:30:36,466 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 56 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-11-28 02:30:36,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 565 flow [2024-11-28 02:30:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:30:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-28 02:30:36,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44363636363636366 [2024-11-28 02:30:36,470 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 389 flow. Second operand 5 states and 122 transitions. [2024-11-28 02:30:36,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 565 flow [2024-11-28 02:30:36,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:30:36,484 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 419 flow [2024-11-28 02:30:36,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-11-28 02:30:36,486 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2024-11-28 02:30:36,486 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 419 flow [2024-11-28 02:30:36,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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 02:30:36,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:36,487 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] [2024-11-28 02:30:36,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:30:36,487 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:36,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1874307914, now seen corresponding path program 1 times [2024-11-28 02:30:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:36,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534501799] [2024-11-28 02:30:36,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:37,183 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 02:30:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534501799] [2024-11-28 02:30:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534501799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:37,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957139661] [2024-11-28 02:30:37,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:37,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:30:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:37,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:30:37,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:30:37,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:37,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 02:30:37,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:37,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:37,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:38,074 INFO L124 PetriNetUnfolderBase]: 1961/3990 cut-off events. [2024-11-28 02:30:38,074 INFO L125 PetriNetUnfolderBase]: For 2198/2198 co-relation queries the response was YES. [2024-11-28 02:30:38,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10044 conditions, 3990 events. 1961/3990 cut-off events. For 2198/2198 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 23087 event pairs, 481 based on Foata normal form. 0/3826 useless extension candidates. Maximal degree in co-relation 8540. Up to 2936 conditions per place. [2024-11-28 02:30:38,113 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 100 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2024-11-28 02:30:38,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 120 transitions, 781 flow [2024-11-28 02:30:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:30:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:30:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-28 02:30:38,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-28 02:30:38,116 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 419 flow. Second operand 6 states and 175 transitions. [2024-11-28 02:30:38,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 120 transitions, 781 flow [2024-11-28 02:30:38,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 737 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:30:38,131 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 438 flow [2024-11-28 02:30:38,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-28 02:30:38,132 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-11-28 02:30:38,132 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 438 flow [2024-11-28 02:30:38,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 02:30:38,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:38,132 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] [2024-11-28 02:30:38,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:30:38,133 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:38,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 140735117, now seen corresponding path program 1 times [2024-11-28 02:30:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:38,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135085282] [2024-11-28 02:30:38,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:38,241 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 02:30:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135085282] [2024-11-28 02:30:38,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135085282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:30:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443761913] [2024-11-28 02:30:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:38,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:30:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:38,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:30:38,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:30:38,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:38,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 02:30:38,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:38,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:38,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:39,285 INFO L124 PetriNetUnfolderBase]: 2879/6063 cut-off events. [2024-11-28 02:30:39,286 INFO L125 PetriNetUnfolderBase]: For 3033/3033 co-relation queries the response was YES. [2024-11-28 02:30:39,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14993 conditions, 6063 events. 2879/6063 cut-off events. For 3033/3033 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40414 event pairs, 1373 based on Foata normal form. 137/5974 useless extension candidates. Maximal degree in co-relation 12966. Up to 3403 conditions per place. [2024-11-28 02:30:39,360 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 124 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-11-28 02:30:39,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1046 flow [2024-11-28 02:30:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:30:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:30:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-28 02:30:39,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-11-28 02:30:39,362 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 438 flow. Second operand 3 states and 107 transitions. [2024-11-28 02:30:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1046 flow [2024-11-28 02:30:39,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 140 transitions, 1038 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:30:39,385 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 445 flow [2024-11-28 02:30:39,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-28 02:30:39,386 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-11-28 02:30:39,387 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 445 flow [2024-11-28 02:30:39,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 02:30:39,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:39,388 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] [2024-11-28 02:30:39,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:30:39,389 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:39,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1363248904, now seen corresponding path program 1 times [2024-11-28 02:30:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:39,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988268687] [2024-11-28 02:30:39,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:39,580 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 02:30:39,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988268687] [2024-11-28 02:30:39,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988268687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:39,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:39,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922028478] [2024-11-28 02:30:39,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:39,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:30:39,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:39,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:30:39,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:39,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:39,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 02:30:39,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:39,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:39,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:40,773 INFO L124 PetriNetUnfolderBase]: 3194/6480 cut-off events. [2024-11-28 02:30:40,773 INFO L125 PetriNetUnfolderBase]: For 4317/4317 co-relation queries the response was YES. [2024-11-28 02:30:40,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17913 conditions, 6480 events. 3194/6480 cut-off events. For 4317/4317 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 42418 event pairs, 475 based on Foata normal form. 105/6399 useless extension candidates. Maximal degree in co-relation 14833. Up to 2632 conditions per place. [2024-11-28 02:30:40,851 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 109 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-11-28 02:30:40,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 930 flow [2024-11-28 02:30:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:30:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-11-28 02:30:40,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527272727272727 [2024-11-28 02:30:40,853 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 445 flow. Second operand 5 states and 152 transitions. [2024-11-28 02:30:40,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 930 flow [2024-11-28 02:30:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:30:40,886 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 519 flow [2024-11-28 02:30:40,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-11-28 02:30:40,887 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-11-28 02:30:40,889 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 519 flow [2024-11-28 02:30:40,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 02:30:40,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:40,890 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] [2024-11-28 02:30:40,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:30:40,890 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:40,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 744217998, now seen corresponding path program 1 times [2024-11-28 02:30:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:40,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064765620] [2024-11-28 02:30:40,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:42,402 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 02:30:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064765620] [2024-11-28 02:30:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064765620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:42,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:30:42,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655590237] [2024-11-28 02:30:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:42,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:30:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:42,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:30:42,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:30:42,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:42,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 519 flow. Second operand has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:42,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:42,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:42,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:44,768 INFO L124 PetriNetUnfolderBase]: 4726/9647 cut-off events. [2024-11-28 02:30:44,768 INFO L125 PetriNetUnfolderBase]: For 8701/8701 co-relation queries the response was YES. [2024-11-28 02:30:44,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26984 conditions, 9647 events. 4726/9647 cut-off events. For 8701/8701 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 67181 event pairs, 1022 based on Foata normal form. 24/9453 useless extension candidates. Maximal degree in co-relation 21479. Up to 4678 conditions per place. [2024-11-28 02:30:44,881 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 187 selfloop transitions, 25 changer transitions 0/226 dead transitions. [2024-11-28 02:30:44,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 226 transitions, 1602 flow [2024-11-28 02:30:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:30:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:30:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 339 transitions. [2024-11-28 02:30:44,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2024-11-28 02:30:44,885 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 519 flow. Second operand 12 states and 339 transitions. [2024-11-28 02:30:44,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 226 transitions, 1602 flow [2024-11-28 02:30:44,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 226 transitions, 1600 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:30:44,947 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 735 flow [2024-11-28 02:30:44,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-28 02:30:44,948 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 62 predicate places. [2024-11-28 02:30:44,949 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 735 flow [2024-11-28 02:30:44,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:44,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:44,950 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] [2024-11-28 02:30:44,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:30:44,950 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:44,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 663371937, now seen corresponding path program 1 times [2024-11-28 02:30:44,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:44,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336444637] [2024-11-28 02:30:44,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:44,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:45,106 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 02:30:45,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:45,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336444637] [2024-11-28 02:30:45,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336444637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:45,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:45,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:45,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68539964] [2024-11-28 02:30:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:45,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:30:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:45,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:30:45,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:30:45,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:45,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 735 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:45,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:45,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:45,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:47,204 INFO L124 PetriNetUnfolderBase]: 6719/14114 cut-off events. [2024-11-28 02:30:47,204 INFO L125 PetriNetUnfolderBase]: For 17881/17881 co-relation queries the response was YES. [2024-11-28 02:30:47,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40969 conditions, 14114 events. 6719/14114 cut-off events. For 17881/17881 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 111179 event pairs, 2587 based on Foata normal form. 409/14196 useless extension candidates. Maximal degree in co-relation 33135. Up to 6552 conditions per place. [2024-11-28 02:30:47,350 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 222 selfloop transitions, 3 changer transitions 0/239 dead transitions. [2024-11-28 02:30:47,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 239 transitions, 2212 flow [2024-11-28 02:30:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:30:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:30:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-28 02:30:47,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6681818181818182 [2024-11-28 02:30:47,353 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 735 flow. Second operand 4 states and 147 transitions. [2024-11-28 02:30:47,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 239 transitions, 2212 flow [2024-11-28 02:30:47,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 239 transitions, 2166 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-28 02:30:47,472 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 731 flow [2024-11-28 02:30:47,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=731, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2024-11-28 02:30:47,474 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 62 predicate places. [2024-11-28 02:30:47,474 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 731 flow [2024-11-28 02:30:47,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:47,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:47,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:47,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:30:47,475 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:47,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:47,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1843983232, now seen corresponding path program 1 times [2024-11-28 02:30:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109508097] [2024-11-28 02:30:47,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:47,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109508097] [2024-11-28 02:30:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109508097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145168010] [2024-11-28 02:30:48,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:48,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:48,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:48,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:48,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:30:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:48,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:30:48,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:48,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:49,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145168010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:49,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 02:30:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434363233] [2024-11-28 02:30:49,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:49,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:30:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:49,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:30:49,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:30:49,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:30:49,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 731 flow. Second operand has 17 states, 17 states have (on average 20.41176470588235) internal successors, (347), 17 states have internal predecessors, (347), 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 02:30:49,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:49,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:30:49,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:30:55,380 INFO L124 PetriNetUnfolderBase]: 14081/28818 cut-off events. [2024-11-28 02:30:55,381 INFO L125 PetriNetUnfolderBase]: For 45320/45320 co-relation queries the response was YES. [2024-11-28 02:30:55,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89420 conditions, 28818 events. 14081/28818 cut-off events. For 45320/45320 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 241227 event pairs, 2244 based on Foata normal form. 268/28343 useless extension candidates. Maximal degree in co-relation 52749. Up to 4582 conditions per place. [2024-11-28 02:30:55,731 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 373 selfloop transitions, 88 changer transitions 0/474 dead transitions. [2024-11-28 02:30:55,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 474 transitions, 3779 flow [2024-11-28 02:30:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:30:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:30:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 626 transitions. [2024-11-28 02:30:55,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5690909090909091 [2024-11-28 02:30:55,736 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 731 flow. Second operand 20 states and 626 transitions. [2024-11-28 02:30:55,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 474 transitions, 3779 flow [2024-11-28 02:30:55,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 474 transitions, 3724 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-28 02:30:55,921 INFO L231 Difference]: Finished difference. Result has 144 places, 170 transitions, 1654 flow [2024-11-28 02:30:55,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1654, PETRI_PLACES=144, PETRI_TRANSITIONS=170} [2024-11-28 02:30:55,922 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2024-11-28 02:30:55,922 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 170 transitions, 1654 flow [2024-11-28 02:30:55,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.41176470588235) internal successors, (347), 17 states have internal predecessors, (347), 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 02:30:55,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:30:55,923 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 02:30:55,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:56,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:30:56,128 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:30:56,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1230375038, now seen corresponding path program 1 times [2024-11-28 02:30:56,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:56,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504087722] [2024-11-28 02:30:56,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:56,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504087722] [2024-11-28 02:30:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504087722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361187755] [2024-11-28 02:30:56,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:56,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:56,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:30:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:56,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:30:56,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:56,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:57,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361187755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:57,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:57,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 02:30:57,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331120376] [2024-11-28 02:30:57,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:57,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:30:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:57,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:30:57,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:30:57,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:30:57,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 170 transitions, 1654 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 02:30:57,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:30:57,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:30:57,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:02,017 INFO L124 PetriNetUnfolderBase]: 12530/25890 cut-off events. [2024-11-28 02:31:02,017 INFO L125 PetriNetUnfolderBase]: For 62913/62913 co-relation queries the response was YES. [2024-11-28 02:31:02,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84862 conditions, 25890 events. 12530/25890 cut-off events. For 62913/62913 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 208974 event pairs, 3733 based on Foata normal form. 21/25244 useless extension candidates. Maximal degree in co-relation 80746. Up to 19270 conditions per place. [2024-11-28 02:31:02,257 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 176 selfloop transitions, 13 changer transitions 0/203 dead transitions. [2024-11-28 02:31:02,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 203 transitions, 2090 flow [2024-11-28 02:31:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:31:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:31:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-11-28 02:31:02,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.610909090909091 [2024-11-28 02:31:02,259 INFO L175 Difference]: Start difference. First operand has 144 places, 170 transitions, 1654 flow. Second operand 5 states and 168 transitions. [2024-11-28 02:31:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 203 transitions, 2090 flow [2024-11-28 02:31:02,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 203 transitions, 1989 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-11-28 02:31:02,769 INFO L231 Difference]: Finished difference. Result has 147 places, 155 transitions, 1442 flow [2024-11-28 02:31:02,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1442, PETRI_PLACES=147, PETRI_TRANSITIONS=155} [2024-11-28 02:31:02,770 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-11-28 02:31:02,770 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 155 transitions, 1442 flow [2024-11-28 02:31:02,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 02:31:02,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:02,770 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 02:31:02,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:31:02,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:31:02,971 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:02,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash 854090354, now seen corresponding path program 1 times [2024-11-28 02:31:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550708674] [2024-11-28 02:31:02,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:31:03,041 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:31:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:31:03,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:31:03,212 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:31:03,214 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-28 02:31:03,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-28 02:31:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-28 02:31:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-28 02:31:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-28 02:31:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-28 02:31:03,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-28 02:31:03,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-28 02:31:03,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-28 02:31:03,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:31:03,224 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:03,358 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:31:03,358 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:31:03,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:31:03 BasicIcfg [2024-11-28 02:31:03,370 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:31:03,370 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:31:03,371 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:31:03,371 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:31:03,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:30:20" (3/4) ... [2024-11-28 02:31:03,376 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:31:03,377 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:31:03,379 INFO L158 Benchmark]: Toolchain (without parser) took 53366.21ms. Allocated memory was 142.6MB in the beginning and 8.3GB in the end (delta: 8.1GB). Free memory was 114.8MB in the beginning and 7.5GB in the end (delta: -7.4GB). Peak memory consumption was 702.9MB. Max. memory is 16.1GB. [2024-11-28 02:31:03,379 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 72.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:31:03,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1167.88ms. Allocated memory is still 142.6MB. Free memory was 114.8MB in the beginning and 81.6MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 02:31:03,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.64ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 76.1MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:31:03,380 INFO L158 Benchmark]: Boogie Preprocessor took 102.10ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 71.2MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:31:03,382 INFO L158 Benchmark]: RCFGBuilder took 9339.88ms. Allocated memory was 142.6MB in the beginning and 838.9MB in the end (delta: 696.3MB). Free memory was 71.2MB in the beginning and 485.2MB in the end (delta: -414.1MB). Peak memory consumption was 503.7MB. Max. memory is 16.1GB. [2024-11-28 02:31:03,384 INFO L158 Benchmark]: TraceAbstraction took 42634.72ms. Allocated memory was 838.9MB in the beginning and 8.3GB in the end (delta: 7.4GB). Free memory was 481.0MB in the beginning and 7.5GB in the end (delta: -7.0GB). Peak memory consumption was 367.0MB. Max. memory is 16.1GB. [2024-11-28 02:31:03,384 INFO L158 Benchmark]: Witness Printer took 7.16ms. Allocated memory is still 8.3GB. Free memory was 7.5GB in the beginning and 7.5GB in the end (delta: 58.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:31:03,389 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 72.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1167.88ms. Allocated memory is still 142.6MB. Free memory was 114.8MB in the beginning and 81.6MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.64ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 76.1MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.10ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 71.2MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 9339.88ms. Allocated memory was 142.6MB in the beginning and 838.9MB in the end (delta: 696.3MB). Free memory was 71.2MB in the beginning and 485.2MB in the end (delta: -414.1MB). Peak memory consumption was 503.7MB. Max. memory is 16.1GB. * TraceAbstraction took 42634.72ms. Allocated memory was 838.9MB in the beginning and 8.3GB in the end (delta: 7.4GB). Free memory was 481.0MB in the beginning and 7.5GB in the end (delta: -7.0GB). Peak memory consumption was 367.0MB. Max. memory is 16.1GB. * Witness Printer took 7.16ms. Allocated memory is still 8.3GB. Free memory was 7.5GB in the beginning and 7.5GB in the end (delta: 58.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-3, m={4:0}, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L990] COND TRUE 1 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-3, id2=-2, m={4:0}, top=0] [L1004] 2 int i; [L1005] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L993] 1 tmp = __VERIFIER_nondet_uint() [L994] CALL 1 assume_abort_if_not(tmp < (400)) [L23] COND FALSE 1 !(!cond) [L994] RET 1 assume_abort_if_not(tmp < (400)) [L995] CALL, EXPR 1 push(arr,tmp) [L960] COND FALSE 1 !(top==(400)) [L967] CALL, EXPR 1 get_top() [L952] 1 return top; [L967] RET, EXPR 1 get_top() [L967] 1 stack[get_top()] = x [L968] CALL 1 inc_top() [L944] 1 top++ [L968] RET 1 inc_top() [L970] 1 return 0; VAL [\old(stack)={3:0}, \old(x)=399, \result=0, arr={3:0}, flag=0, m={4:0}, stack={3:0}, top=1, x=399] [L995] RET, EXPR 1 push(arr,tmp) [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=399, top=1] [L1005] COND TRUE 2 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, top=1] [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND FALSE 2 !(get_top()==0) [L981] CALL 2 dec_top() [L948] 2 top-- [L981] RET 2 dec_top() [L982] CALL, EXPR 2 get_top() [L952] 2 return top; [L982] RET, EXPR 2 get_top() [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1010] RET, EXPR 2 pop(arr) [L1010] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1005] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1005] COND TRUE 2 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); VAL [\old(stack)={3:0}, \result=-2, arr={3:0}, flag=1, m={4:0}, stack={3:0}, top=0] [L1010] RET, EXPR 2 pop(arr) [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L1011] CALL 2 error() [L940] CALL 2 reach_error() [L20] COND FALSE 2 !(0) VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L20] 2 __assert_fail ("0", "stack_longer-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1017]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 85 locations, 15 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: 42.3s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1448 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1398 mSDsluCounter, 185 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4421 IncrementalHoareTripleChecker+Invalid, 4461 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 28 mSDtfsCounter, 4421 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 262 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1654occurred in iteration=15, InterpolantAutomatonStates: 108, 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, 1.3s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 423 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 447 ConstructedInterpolants, 0 QuantifiedInterpolants, 3702 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3033 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 3/54 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 02:31:03,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:31:07,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:31:07,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:31:07,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:31:07,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:31:07,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:31:07,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:31:07,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:31:07,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:31:07,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:31:07,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:31:07,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:31:07,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:31:07,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:31:07,211 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:31:07,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:31:07,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:31:07,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:31:07,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:31:07,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:31:07,213 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:31:07,213 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:31:07,213 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:31:07,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:31:07,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:31:07,213 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:31:07,214 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:31:07,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:31:07,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:31:07,214 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:31:07,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:31:07,215 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:31:07,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:31:07,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:31:07,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:31:07,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:31:07,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:31:07,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:31:07,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:31:07,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:31:07,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:31:07,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:31:07,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:31:07,217 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:31:07,217 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:31:07,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:31:07,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:31:07,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:31:07,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:31:07,218 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_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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 -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-11-28 02:31:07,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:31:07,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:31:07,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:31:07,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:31:07,707 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:31:07,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack_longer-1.i [2024-11-28 02:31:11,608 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/df8537921/6cf4d1df4db545329ac2a97a0cba64c2/FLAG58b1fe3d3 [2024-11-28 02:31:12,084 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:31:12,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/sv-benchmarks/c/pthread/stack_longer-1.i [2024-11-28 02:31:12,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/df8537921/6cf4d1df4db545329ac2a97a0cba64c2/FLAG58b1fe3d3 [2024-11-28 02:31:12,204 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/data/df8537921/6cf4d1df4db545329ac2a97a0cba64c2 [2024-11-28 02:31:12,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:31:12,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:31:12,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:31:12,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:31:12,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:31:12,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:12" (1/1) ... [2024-11-28 02:31:12,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e069ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:12, skipping insertion in model container [2024-11-28 02:31:12,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:31:12" (1/1) ... [2024-11-28 02:31:12,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:31:13,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:31:13,273 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:31:13,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:31:13,531 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:31:13,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13 WrapperNode [2024-11-28 02:31:13,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:31:13,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:31:13,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:31:13,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:31:13,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,638 INFO L138 Inliner]: procedures = 281, calls = 432, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 550 [2024-11-28 02:31:13,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:31:13,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:31:13,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:31:13,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:31:13,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,676 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,734 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-11-28 02:31:13,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,787 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:31:13,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:31:13,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:31:13,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:31:13,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (1/1) ... [2024-11-28 02:31:13,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:31:13,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:13,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:31:13,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:31:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 02:31:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 02:31:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 02:31:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 02:31:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 02:31:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 02:31:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 02:31:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-28 02:31:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-28 02:31:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-28 02:31:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:31:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:31:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:31:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:31:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:31:13,965 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 02:31:14,238 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:31:14,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:31:15,913 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:31:15,914 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:31:26,474 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:31:26,474 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:31:26,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:26 BoogieIcfgContainer [2024-11-28 02:31:26,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:31:26,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:31:26,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:31:26,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:31:26,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:31:12" (1/3) ... [2024-11-28 02:31:26,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3285cf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:26, skipping insertion in model container [2024-11-28 02:31:26,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:31:13" (2/3) ... [2024-11-28 02:31:26,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3285cf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:31:26, skipping insertion in model container [2024-11-28 02:31:26,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:26" (3/3) ... [2024-11-28 02:31:26,493 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-11-28 02:31:26,512 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:31:26,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-1.i that has 3 procedures, 47 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-28 02:31:26,514 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:31:26,616 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:31:26,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 124 flow [2024-11-28 02:31:26,746 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-11-28 02:31:26,750 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:31:26,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 9/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 145 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2024-11-28 02:31:26,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 124 flow [2024-11-28 02:31:26,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 52 transitions, 116 flow [2024-11-28 02:31:26,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:31:26,790 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;@48f279fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:31:26,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 02:31:26,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:31:26,830 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-28 02:31:26,830 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:31:26,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:26,831 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:26,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:26,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash -978844805, now seen corresponding path program 1 times [2024-11-28 02:31:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505256683] [2024-11-28 02:31:26,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:26,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:26,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:26,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:26,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:31:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:27,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:31:27,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:27,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:27,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:27,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505256683] [2024-11-28 02:31:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505256683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:27,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:27,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:31:27,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585241162] [2024-11-28 02:31:27,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:27,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:31:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:27,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:31:27,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:31:27,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:27,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 02:31:27,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:27,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:27,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:28,368 INFO L124 PetriNetUnfolderBase]: 454/882 cut-off events. [2024-11-28 02:31:28,368 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-28 02:31:28,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 882 events. 454/882 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4534 event pairs, 242 based on Foata normal form. 94/858 useless extension candidates. Maximal degree in co-relation 1569. Up to 512 conditions per place. [2024-11-28 02:31:28,379 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-28 02:31:28,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 227 flow [2024-11-28 02:31:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:31:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:31:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-28 02:31:28,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-11-28 02:31:28,398 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 116 flow. Second operand 4 states and 117 transitions. [2024-11-28 02:31:28,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 227 flow [2024-11-28 02:31:28,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:31:28,412 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 100 flow [2024-11-28 02:31:28,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-28 02:31:28,420 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-11-28 02:31:28,422 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 100 flow [2024-11-28 02:31:28,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 02:31:28,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:28,422 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:28,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:28,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:28,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:28,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash -978844804, now seen corresponding path program 1 times [2024-11-28 02:31:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462225075] [2024-11-28 02:31:28,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:28,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:28,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:28,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:31:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:29,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:31:29,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:29,434 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 02:31:29,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:29,435 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:29,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462225075] [2024-11-28 02:31:29,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462225075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:29,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:29,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:31:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472155781] [2024-11-28 02:31:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:29,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:31:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:29,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:31:29,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:31:29,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 02:31:29,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:29,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:29,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:30,236 INFO L124 PetriNetUnfolderBase]: 750/1387 cut-off events. [2024-11-28 02:31:30,236 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-28 02:31:30,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 1387 events. 750/1387 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7438 event pairs, 125 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 806. Up to 848 conditions per place. [2024-11-28 02:31:30,249 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 87 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-11-28 02:31:30,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 423 flow [2024-11-28 02:31:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:31:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:31:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-11-28 02:31:30,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-11-28 02:31:30,252 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 100 flow. Second operand 6 states and 194 transitions. [2024-11-28 02:31:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 423 flow [2024-11-28 02:31:30,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:31:30,257 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2024-11-28 02:31:30,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-28 02:31:30,259 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-28 02:31:30,259 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2024-11-28 02:31:30,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 02:31:30,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:30,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:30,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:30,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:30,464 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:30,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2121870228, now seen corresponding path program 1 times [2024-11-28 02:31:30,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:30,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479017911] [2024-11-28 02:31:30,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:30,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:30,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:30,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:30,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:31:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:30,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:31:30,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:31,019 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 02:31:31,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:31,019 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:31,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479017911] [2024-11-28 02:31:31,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479017911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:31,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:31,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:31:31,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698022418] [2024-11-28 02:31:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:31,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:31:31,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:31,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:31:31,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:31:31,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-11-28 02:31:31,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 02:31:31,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:31,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-11-28 02:31:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:31,448 INFO L124 PetriNetUnfolderBase]: 793/1526 cut-off events. [2024-11-28 02:31:31,448 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-28 02:31:31,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1526 events. 793/1526 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7941 event pairs, 348 based on Foata normal form. 0/1383 useless extension candidates. Maximal degree in co-relation 3059. Up to 734 conditions per place. [2024-11-28 02:31:31,460 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 56 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-11-28 02:31:31,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 303 flow [2024-11-28 02:31:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:31:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:31:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-28 02:31:31,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-11-28 02:31:31,462 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-11-28 02:31:31,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 303 flow [2024-11-28 02:31:31,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 301 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:31:31,466 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 148 flow [2024-11-28 02:31:31,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-11-28 02:31:31,468 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-11-28 02:31:31,468 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 148 flow [2024-11-28 02:31:31,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 02:31:31,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:31,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:31,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:31:31,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:31,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:31,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash -451851135, now seen corresponding path program 1 times [2024-11-28 02:31:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929518281] [2024-11-28 02:31:31,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:31,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:31,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:31,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:31:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:32,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:31:32,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:32,239 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 02:31:32,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:32,239 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:32,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929518281] [2024-11-28 02:31:32,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929518281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:32,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:32,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:31:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699633409] [2024-11-28 02:31:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:32,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:31:32,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:32,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:31:32,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:31:32,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:31:32,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 02:31:32,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:32,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:31:32,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:32,860 INFO L124 PetriNetUnfolderBase]: 1096/2110 cut-off events. [2024-11-28 02:31:32,860 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-28 02:31:32,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 2110 events. 1096/2110 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12240 event pairs, 518 based on Foata normal form. 0/1972 useless extension candidates. Maximal degree in co-relation 1577. Up to 1077 conditions per place. [2024-11-28 02:31:32,881 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 68 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-11-28 02:31:32,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 89 transitions, 386 flow [2024-11-28 02:31:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:31:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:31:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-28 02:31:32,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6318181818181818 [2024-11-28 02:31:32,886 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 148 flow. Second operand 4 states and 139 transitions. [2024-11-28 02:31:32,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 89 transitions, 386 flow [2024-11-28 02:31:32,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:31:32,895 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 175 flow [2024-11-28 02:31:32,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-28 02:31:32,896 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-28 02:31:32,897 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 175 flow [2024-11-28 02:31:32,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 02:31:32,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:32,898 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:32,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:31:33,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:33,099 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:33,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1692534675, now seen corresponding path program 1 times [2024-11-28 02:31:33,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:33,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253321386] [2024-11-28 02:31:33,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:33,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:33,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:33,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:33,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:31:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:33,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:31:33,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:33,858 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 02:31:33,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:33,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253321386] [2024-11-28 02:31:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253321386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:33,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:33,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:31:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547525117] [2024-11-28 02:31:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:33,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:31:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:33,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:31:33,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:31:33,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:33,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 02:31:33,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:33,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:33,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:34,357 INFO L124 PetriNetUnfolderBase]: 1073/2100 cut-off events. [2024-11-28 02:31:34,357 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-11-28 02:31:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 2100 events. 1073/2100 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 12350 event pairs, 864 based on Foata normal form. 5/1962 useless extension candidates. Maximal degree in co-relation 1711. Up to 1736 conditions per place. [2024-11-28 02:31:34,377 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 35 selfloop transitions, 1 changer transitions 2/52 dead transitions. [2024-11-28 02:31:34,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 247 flow [2024-11-28 02:31:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:31:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:31:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-28 02:31:34,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-28 02:31:34,378 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 175 flow. Second operand 3 states and 80 transitions. [2024-11-28 02:31:34,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 247 flow [2024-11-28 02:31:34,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 242 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:31:34,389 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 165 flow [2024-11-28 02:31:34,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-28 02:31:34,391 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-28 02:31:34,392 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 165 flow [2024-11-28 02:31:34,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 02:31:34,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:34,393 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:34,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:34,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:34,594 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:34,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash 59288564, now seen corresponding path program 1 times [2024-11-28 02:31:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808025920] [2024-11-28 02:31:34,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:34,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:34,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:31:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:35,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:31:35,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:35,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:36,397 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:36,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808025920] [2024-11-28 02:31:36,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808025920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:36,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:31:36,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-11-28 02:31:36,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688515081] [2024-11-28 02:31:36,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:36,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:31:36,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:36,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:31:36,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:31:36,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:36,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 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 02:31:36,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:36,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:36,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:44,166 INFO L124 PetriNetUnfolderBase]: 5287/10050 cut-off events. [2024-11-28 02:31:44,166 INFO L125 PetriNetUnfolderBase]: For 2267/2267 co-relation queries the response was YES. [2024-11-28 02:31:44,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22160 conditions, 10050 events. 5287/10050 cut-off events. For 2267/2267 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 69868 event pairs, 756 based on Foata normal form. 264/9717 useless extension candidates. Maximal degree in co-relation 22145. Up to 1753 conditions per place. [2024-11-28 02:31:44,270 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 317 selfloop transitions, 45 changer transitions 0/375 dead transitions. [2024-11-28 02:31:44,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 375 transitions, 1774 flow [2024-11-28 02:31:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:31:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:31:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 679 transitions. [2024-11-28 02:31:44,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6172727272727273 [2024-11-28 02:31:44,277 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 165 flow. Second operand 20 states and 679 transitions. [2024-11-28 02:31:44,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 375 transitions, 1774 flow [2024-11-28 02:31:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 375 transitions, 1773 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:31:44,302 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 582 flow [2024-11-28 02:31:44,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=582, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-11-28 02:31:44,303 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2024-11-28 02:31:44,303 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 582 flow [2024-11-28 02:31:44,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 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 02:31:44,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:44,304 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] [2024-11-28 02:31:44,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:44,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:44,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:44,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash 124333274, now seen corresponding path program 1 times [2024-11-28 02:31:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:44,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394858569] [2024-11-28 02:31:44,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:44,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:44,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:44,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:44,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:31:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:45,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:31:45,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:45,286 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 02:31:45,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:45,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394858569] [2024-11-28 02:31:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394858569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:45,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:45,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:31:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640938190] [2024-11-28 02:31:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:45,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:31:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:45,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:31:45,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:31:45,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:45,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 02:31:45,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:45,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:45,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:47,024 INFO L124 PetriNetUnfolderBase]: 5035/9502 cut-off events. [2024-11-28 02:31:47,024 INFO L125 PetriNetUnfolderBase]: For 9602/9602 co-relation queries the response was YES. [2024-11-28 02:31:47,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24520 conditions, 9502 events. 5035/9502 cut-off events. For 9602/9602 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 66008 event pairs, 3115 based on Foata normal form. 0/9130 useless extension candidates. Maximal degree in co-relation 24489. Up to 6346 conditions per place. [2024-11-28 02:31:47,117 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 121 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-11-28 02:31:47,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 137 transitions, 1146 flow [2024-11-28 02:31:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:31:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:31:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-28 02:31:47,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-28 02:31:47,119 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 582 flow. Second operand 4 states and 108 transitions. [2024-11-28 02:31:47,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 137 transitions, 1146 flow [2024-11-28 02:31:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 137 transitions, 1054 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-11-28 02:31:47,187 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 522 flow [2024-11-28 02:31:47,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=522, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-11-28 02:31:47,189 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-11-28 02:31:47,190 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 522 flow [2024-11-28 02:31:47,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 02:31:47,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:47,190 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] [2024-11-28 02:31:47,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:31:47,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:47,391 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:47,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash 133270575, now seen corresponding path program 1 times [2024-11-28 02:31:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:47,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361155454] [2024-11-28 02:31:47,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:47,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:47,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:47,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:31:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:47,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:31:47,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:48,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 9 [2024-11-28 02:31:48,054 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 02:31:48,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:48,054 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361155454] [2024-11-28 02:31:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361155454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:48,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:31:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921596815] [2024-11-28 02:31:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:48,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:31:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:48,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:31:48,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:31:48,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:31:48,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 522 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 02:31:48,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:48,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:31:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:48,780 INFO L124 PetriNetUnfolderBase]: 2498/5168 cut-off events. [2024-11-28 02:31:48,780 INFO L125 PetriNetUnfolderBase]: For 2568/2568 co-relation queries the response was YES. [2024-11-28 02:31:48,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12237 conditions, 5168 events. 2498/5168 cut-off events. For 2568/2568 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 32181 event pairs, 576 based on Foata normal form. 358/5395 useless extension candidates. Maximal degree in co-relation 12205. Up to 3021 conditions per place. [2024-11-28 02:31:48,820 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 67 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2024-11-28 02:31:48,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 555 flow [2024-11-28 02:31:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:31:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:31:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-28 02:31:48,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5636363636363636 [2024-11-28 02:31:48,822 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 522 flow. Second operand 3 states and 93 transitions. [2024-11-28 02:31:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 555 flow [2024-11-28 02:31:48,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 533 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-11-28 02:31:48,849 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 377 flow [2024-11-28 02:31:48,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-28 02:31:48,850 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2024-11-28 02:31:48,850 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 377 flow [2024-11-28 02:31:48,851 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 02:31:48,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:48,851 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] [2024-11-28 02:31:48,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:49,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:49,052 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:49,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1360851743, now seen corresponding path program 1 times [2024-11-28 02:31:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095283663] [2024-11-28 02:31:49,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:49,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:49,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:31:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:49,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:31:49,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:50,233 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 02:31:50,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:50,234 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095283663] [2024-11-28 02:31:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095283663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:50,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:50,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:31:50,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499640147] [2024-11-28 02:31:50,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:50,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:31:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:50,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:31:50,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:31:50,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:50,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 377 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 02:31:50,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:50,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:50,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:51,206 INFO L124 PetriNetUnfolderBase]: 2523/5169 cut-off events. [2024-11-28 02:31:51,207 INFO L125 PetriNetUnfolderBase]: For 2043/2043 co-relation queries the response was YES. [2024-11-28 02:31:51,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 5169 events. 2523/5169 cut-off events. For 2043/2043 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 31619 event pairs, 901 based on Foata normal form. 0/5002 useless extension candidates. Maximal degree in co-relation 12396. Up to 3411 conditions per place. [2024-11-28 02:31:51,241 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 99 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-11-28 02:31:51,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 719 flow [2024-11-28 02:31:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:31:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:31:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-28 02:31:51,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-11-28 02:31:51,244 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 377 flow. Second operand 6 states and 182 transitions. [2024-11-28 02:31:51,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 719 flow [2024-11-28 02:31:51,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:31:51,260 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 417 flow [2024-11-28 02:31:51,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=417, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-11-28 02:31:51,261 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2024-11-28 02:31:51,261 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 417 flow [2024-11-28 02:31:51,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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 02:31:51,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:51,262 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] [2024-11-28 02:31:51,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:51,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:51,463 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:51,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash -969184563, now seen corresponding path program 1 times [2024-11-28 02:31:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648134837] [2024-11-28 02:31:51,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:51,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:51,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:51,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:51,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:31:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:52,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:31:52,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:52,117 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 02:31:52,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:52,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:52,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648134837] [2024-11-28 02:31:52,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648134837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:52,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:52,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:31:52,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735270189] [2024-11-28 02:31:52,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:52,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:31:52,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:52,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:31:52,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:31:52,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:31:52,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 02:31:52,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:52,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:31:52,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:52,941 INFO L124 PetriNetUnfolderBase]: 2452/5056 cut-off events. [2024-11-28 02:31:52,941 INFO L125 PetriNetUnfolderBase]: For 2182/2182 co-relation queries the response was YES. [2024-11-28 02:31:52,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12160 conditions, 5056 events. 2452/5056 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 31030 event pairs, 872 based on Foata normal form. 7/4931 useless extension candidates. Maximal degree in co-relation 12129. Up to 3351 conditions per place. [2024-11-28 02:31:52,962 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 92 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2024-11-28 02:31:52,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 709 flow [2024-11-28 02:31:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:31:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:31:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-28 02:31:52,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5890909090909091 [2024-11-28 02:31:52,964 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 417 flow. Second operand 5 states and 162 transitions. [2024-11-28 02:31:52,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 709 flow [2024-11-28 02:31:52,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 700 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:31:52,980 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 422 flow [2024-11-28 02:31:52,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-28 02:31:52,981 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2024-11-28 02:31:52,982 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 422 flow [2024-11-28 02:31:52,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 02:31:52,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:52,982 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] [2024-11-28 02:31:53,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:53,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:53,183 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:53,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1562094673, now seen corresponding path program 1 times [2024-11-28 02:31:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:53,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744273709] [2024-11-28 02:31:53,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:53,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:53,186 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:53,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:31:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:53,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:31:53,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:54,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-28 02:31:54,400 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 15 treesize of output 7 [2024-11-28 02:31:54,443 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 02:31:54,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:31:54,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744273709] [2024-11-28 02:31:54,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744273709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:31:54,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:31:54,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:31:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020410631] [2024-11-28 02:31:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:31:54,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:31:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:54,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:31:54,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:31:54,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-11-28 02:31:54,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 422 flow. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:54,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:54,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-11-28 02:31:54,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:31:56,640 INFO L124 PetriNetUnfolderBase]: 3822/7714 cut-off events. [2024-11-28 02:31:56,640 INFO L125 PetriNetUnfolderBase]: For 3625/3625 co-relation queries the response was YES. [2024-11-28 02:31:56,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 7714 events. 3822/7714 cut-off events. For 3625/3625 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 48438 event pairs, 1169 based on Foata normal form. 0/7504 useless extension candidates. Maximal degree in co-relation 18767. Up to 3514 conditions per place. [2024-11-28 02:31:56,692 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 170 selfloop transitions, 21 changer transitions 0/202 dead transitions. [2024-11-28 02:31:56,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 202 transitions, 1289 flow [2024-11-28 02:31:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:31:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:31:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 365 transitions. [2024-11-28 02:31:56,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-11-28 02:31:56,696 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 422 flow. Second operand 14 states and 365 transitions. [2024-11-28 02:31:56,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 202 transitions, 1289 flow [2024-11-28 02:31:56,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 202 transitions, 1269 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:31:56,712 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 530 flow [2024-11-28 02:31:56,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=530, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-11-28 02:31:56,712 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2024-11-28 02:31:56,712 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 530 flow [2024-11-28 02:31:56,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:56,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:31:56,713 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:56,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:56,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:56,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:31:56,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1123906115, now seen corresponding path program 1 times [2024-11-28 02:31:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:31:56,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9036645] [2024-11-28 02:31:56,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:56,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:56,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:56,917 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:56,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:31:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:57,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:31:57,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:58,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:58,965 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:31:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9036645] [2024-11-28 02:31:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9036645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:58,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:31:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-11-28 02:31:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846690026] [2024-11-28 02:31:58,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:58,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:31:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:31:58,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:31:58,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:31:59,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:31:59,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 530 flow. Second operand has 12 states, 12 states have (on average 20.166666666666668) internal successors, (242), 12 states have internal predecessors, (242), 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 02:31:59,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:31:59,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:31:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:32:07,862 INFO L124 PetriNetUnfolderBase]: 8991/18506 cut-off events. [2024-11-28 02:32:07,862 INFO L125 PetriNetUnfolderBase]: For 10332/10332 co-relation queries the response was YES. [2024-11-28 02:32:07,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45495 conditions, 18506 events. 8991/18506 cut-off events. For 10332/10332 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 139964 event pairs, 2624 based on Foata normal form. 88/18096 useless extension candidates. Maximal degree in co-relation 45460. Up to 2996 conditions per place. [2024-11-28 02:32:07,977 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 308 selfloop transitions, 63 changer transitions 0/383 dead transitions. [2024-11-28 02:32:07,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 383 transitions, 2539 flow [2024-11-28 02:32:07,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:32:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:32:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 616 transitions. [2024-11-28 02:32:07,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-28 02:32:07,982 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 530 flow. Second operand 20 states and 616 transitions. [2024-11-28 02:32:07,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 383 transitions, 2539 flow [2024-11-28 02:32:08,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 383 transitions, 2477 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-28 02:32:08,048 INFO L231 Difference]: Finished difference. Result has 126 places, 130 transitions, 996 flow [2024-11-28 02:32:08,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=996, PETRI_PLACES=126, PETRI_TRANSITIONS=130} [2024-11-28 02:32:08,049 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 76 predicate places. [2024-11-28 02:32:08,049 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 130 transitions, 996 flow [2024-11-28 02:32:08,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.166666666666668) internal successors, (242), 12 states have internal predecessors, (242), 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 02:32:08,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:32:08,050 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 02:32:08,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:32:08,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:08,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:32:08,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1333288569, now seen corresponding path program 1 times [2024-11-28 02:32:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:32:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127564332] [2024-11-28 02:32:08,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:32:08,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:08,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:08,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:32:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:32:08,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:32:08,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:09,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:10,085 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:32:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127564332] [2024-11-28 02:32:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127564332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:10,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:32:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-28 02:32:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122701258] [2024-11-28 02:32:10,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:10,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:32:10,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:32:10,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:32:10,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:32:10,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-11-28 02:32:10,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 130 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 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 02:32:10,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:32:10,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-11-28 02:32:10,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:32:14,000 INFO L124 PetriNetUnfolderBase]: 8149/16813 cut-off events. [2024-11-28 02:32:14,000 INFO L125 PetriNetUnfolderBase]: For 18687/18687 co-relation queries the response was YES. [2024-11-28 02:32:14,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44175 conditions, 16813 events. 8149/16813 cut-off events. For 18687/18687 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 124662 event pairs, 3233 based on Foata normal form. 7/16418 useless extension candidates. Maximal degree in co-relation 44126. Up to 12397 conditions per place. [2024-11-28 02:32:14,122 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 149 selfloop transitions, 16 changer transitions 0/177 dead transitions. [2024-11-28 02:32:14,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 177 transitions, 1453 flow [2024-11-28 02:32:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:32:14,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:32:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-11-28 02:32:14,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-11-28 02:32:14,125 INFO L175 Difference]: Start difference. First operand has 126 places, 130 transitions, 996 flow. Second operand 9 states and 237 transitions. [2024-11-28 02:32:14,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 177 transitions, 1453 flow [2024-11-28 02:32:14,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 177 transitions, 1403 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-28 02:32:14,215 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 998 flow [2024-11-28 02:32:14,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=998, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2024-11-28 02:32:14,216 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 85 predicate places. [2024-11-28 02:32:14,216 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 998 flow [2024-11-28 02:32:14,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 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 02:32:14,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:32:14,217 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:14,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:32:14,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:14,417 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:32:14,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1275738235, now seen corresponding path program 1 times [2024-11-28 02:32:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:32:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40682464] [2024-11-28 02:32:14,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:32:14,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:14,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:14,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:14,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:32:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:32:15,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:32:15,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:15,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:15,291 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:32:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40682464] [2024-11-28 02:32:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40682464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:15,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:32:15,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-11-28 02:32:15,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664411142] [2024-11-28 02:32:15,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:15,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:32:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:32:15,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:32:15,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:32:15,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:32:15,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 998 flow. Second operand has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 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 02:32:15,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:32:15,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:32:15,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:32:19,982 INFO L124 PetriNetUnfolderBase]: 11670/23942 cut-off events. [2024-11-28 02:32:19,982 INFO L125 PetriNetUnfolderBase]: For 33223/33229 co-relation queries the response was YES. [2024-11-28 02:32:20,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64890 conditions, 23942 events. 11670/23942 cut-off events. For 33223/33229 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 186878 event pairs, 2868 based on Foata normal form. 175/23734 useless extension candidates. Maximal degree in co-relation 64838. Up to 5680 conditions per place. [2024-11-28 02:32:20,208 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 274 selfloop transitions, 104 changer transitions 0/391 dead transitions. [2024-11-28 02:32:20,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 391 transitions, 3135 flow [2024-11-28 02:32:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:32:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:32:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 577 transitions. [2024-11-28 02:32:20,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5828282828282828 [2024-11-28 02:32:20,213 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 998 flow. Second operand 18 states and 577 transitions. [2024-11-28 02:32:20,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 391 transitions, 3135 flow [2024-11-28 02:32:20,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 391 transitions, 3005 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-11-28 02:32:20,400 INFO L231 Difference]: Finished difference. Result has 155 places, 180 transitions, 1761 flow [2024-11-28 02:32:20,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1761, PETRI_PLACES=155, PETRI_TRANSITIONS=180} [2024-11-28 02:32:20,401 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 105 predicate places. [2024-11-28 02:32:20,401 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 180 transitions, 1761 flow [2024-11-28 02:32:20,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 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 02:32:20,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:32:20,402 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 02:32:20,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:32:20,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:20,603 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 02:32:20,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash 824101247, now seen corresponding path program 1 times [2024-11-28 02:32:20,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:32:20,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996610230] [2024-11-28 02:32:20,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:32:20,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:20,612 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:20,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:32:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:32:22,350 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:32:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:32:24,131 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-28 02:32:24,132 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:32:24,133 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-28 02:32:24,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-28 02:32:24,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-28 02:32:24,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-28 02:32:24,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-28 02:32:24,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-28 02:32:24,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-28 02:32:24,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-28 02:32:24,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-28 02:32:24,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-28 02:32:24,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-28 02:32:24,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-28 02:32:24,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-28 02:32:24,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-28 02:32:24,138 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-28 02:32:24,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:32:24,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:24,340 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:24,456 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:32:24,456 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:32:24,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:32:24 BasicIcfg [2024-11-28 02:32:24,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:32:24,468 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:32:24,468 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:32:24,468 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:32:24,470 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:31:26" (3/4) ... [2024-11-28 02:32:24,473 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:32:24,474 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:32:24,475 INFO L158 Benchmark]: Toolchain (without parser) took 72266.19ms. Allocated memory was 117.4MB in the beginning and 9.7GB in the end (delta: 9.6GB). Free memory was 90.8MB in the beginning and 8.8GB in the end (delta: -8.7GB). Peak memory consumption was 849.4MB. Max. memory is 16.1GB. [2024-11-28 02:32:24,477 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:32:24,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1321.73ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 54.8MB in the end (delta: 35.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 02:32:24,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.67ms. Allocated memory is still 117.4MB. Free memory was 54.8MB in the beginning and 49.2MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:32:24,479 INFO L158 Benchmark]: Boogie Preprocessor took 215.92ms. Allocated memory is still 117.4MB. Free memory was 49.2MB in the beginning and 87.2MB in the end (delta: -38.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-11-28 02:32:24,480 INFO L158 Benchmark]: RCFGBuilder took 12619.30ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 86.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 801.1MB. Max. memory is 16.1GB. [2024-11-28 02:32:24,480 INFO L158 Benchmark]: TraceAbstraction took 57988.59ms. Allocated memory was 2.7GB in the beginning and 9.7GB in the end (delta: 7.0GB). Free memory was 2.2GB in the beginning and 8.8GB in the end (delta: -6.6GB). Peak memory consumption was 377.0MB. Max. memory is 16.1GB. [2024-11-28 02:32:24,481 INFO L158 Benchmark]: Witness Printer took 6.14ms. Allocated memory is still 9.7GB. Free memory was 8.8GB in the beginning and 8.8GB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:32:24,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1321.73ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 54.8MB in the end (delta: 35.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.67ms. Allocated memory is still 117.4MB. Free memory was 54.8MB in the beginning and 49.2MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 215.92ms. Allocated memory is still 117.4MB. Free memory was 49.2MB in the beginning and 87.2MB in the end (delta: -38.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * RCFGBuilder took 12619.30ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 86.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 801.1MB. Max. memory is 16.1GB. * TraceAbstraction took 57988.59ms. Allocated memory was 2.7GB in the beginning and 9.7GB in the end (delta: 7.0GB). Free memory was 2.2GB in the beginning and 8.8GB in the end (delta: -6.6GB). Peak memory consumption was 377.0MB. Max. memory is 16.1GB. * Witness Printer took 6.14ms. Allocated memory is still 9.7GB. Free memory was 8.8GB in the beginning and 8.8GB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-1, m={4:0}, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L990] COND TRUE 1 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-1, id2=0, m={4:0}, top=0] [L1004] 2 int i; [L1005] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1005] COND TRUE 2 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L993] 1 tmp = __VERIFIER_nondet_uint() [L994] CALL 1 assume_abort_if_not(tmp < (400)) [L23] COND FALSE 1 !(!cond) [L994] RET 1 assume_abort_if_not(tmp < (400)) [L995] CALL, EXPR 1 push(arr,tmp) [L960] COND FALSE 1 !(top==(400)) [L967] CALL, EXPR 1 get_top() [L952] 1 return top; [L967] RET, EXPR 1 get_top() [L967] 1 stack[get_top()] = x [L968] CALL 1 inc_top() [L944] 1 top++ [L968] RET 1 inc_top() [L970] 1 return 0; VAL [\old(stack)={3:0}, \old(x)=0, \result=0, arr={3:0}, flag=0, m={4:0}, stack={3:0}, top=1, x=0] [L995] RET, EXPR 1 push(arr,tmp) [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=0, top=1] [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND FALSE 2 !(get_top()==0) [L981] CALL 2 dec_top() [L948] 2 top-- [L981] RET 2 dec_top() [L982] CALL, EXPR 2 get_top() [L952] 2 return top; [L982] RET, EXPR 2 get_top() [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1010] RET, EXPR 2 pop(arr) [L1010] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1005] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1005] COND TRUE 2 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); VAL [\old(stack)={3:0}, \result=-2, arr={3:0}, flag=1, m={4:0}, stack={3:0}, top=0] [L1010] RET, EXPR 2 pop(arr) [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L1011] CALL 2 error() [L940] CALL 2 reach_error() [L20] COND FALSE 2 !(0) VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L20] 2 __assert_fail ("0", "stack_longer-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1017]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 85 locations, 15 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: 57.7s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1536 SdHoareTripleChecker+Valid, 16.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1491 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 14.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4434 IncrementalHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 6 mSDtfsCounter, 4434 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 425 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1761occurred in iteration=14, InterpolantAutomatonStates: 119, 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: 0.3s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 4246 SizeOfPredicates, 62 NumberOfNonLiveVariables, 6919 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 2/54 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 02:32:24,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a3eb0-1f4f-4f7d-8349-1c0155eba3d6/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: UNKNOWN: Overapproximated counterexample