./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.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_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/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_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/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_9b850d5f-53ee-4e1f-bee7-534065f4fb06/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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:19:14,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:19:14,595 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:19:14,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:19:14,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:19:14,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:19:14,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:19:14,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:19:14,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:19:14,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:19:14,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:19:14,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:19:14,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:19:14,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:19:14,642 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:19:14,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:19:14,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:19:14,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:19:14,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:19:14,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:19:14,644 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:19:14,644 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:19:14,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:19:14,645 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:19:14,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:19:14,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:19:14,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:19:14,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:19:14,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:19:14,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:19:14,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:19:14,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:19:14,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:19:14,647 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_9b850d5f-53ee-4e1f-bee7-534065f4fb06/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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-28 05:19:14,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:19:14,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:19:14,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:19:14,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:19:14,993 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:19:14,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-28 05:19:17,973 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/data/387c1f140/f5da73912e684d6d8f79565df6d3e7e6/FLAGfb2de69e7 [2024-11-28 05:19:18,314 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:19:18,317 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-28 05:19:18,339 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/data/387c1f140/f5da73912e684d6d8f79565df6d3e7e6/FLAGfb2de69e7 [2024-11-28 05:19:18,529 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/data/387c1f140/f5da73912e684d6d8f79565df6d3e7e6 [2024-11-28 05:19:18,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:19:18,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:19:18,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:19:18,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:19:18,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:19:18,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:19:18" (1/1) ... [2024-11-28 05:19:18,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504d5b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:18, skipping insertion in model container [2024-11-28 05:19:18,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:19:18" (1/1) ... [2024-11-28 05:19:18,576 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:19:19,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:19:19,054 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:19:19,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:19:19,196 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:19:19,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19 WrapperNode [2024-11-28 05:19:19,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:19:19,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:19:19,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:19:19,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:19:19,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,266 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 547 [2024-11-28 05:19:19,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:19:19,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:19:19,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:19:19,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:19:19,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,334 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 05:19:19,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,369 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:19:19,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:19:19,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:19:19,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:19:19,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (1/1) ... [2024-11-28 05:19:19,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:19:19,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:19,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:19:19,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:19:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-28 05:19:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-28 05:19:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-28 05:19:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-28 05:19:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:19:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:19:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:19:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:19:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:19:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:19:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:19:19,476 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 05:19:19,661 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:19:19,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:19:20,610 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:19:20,610 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:19:26,014 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:19:26,015 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:19:26,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:19:26 BoogieIcfgContainer [2024-11-28 05:19:26,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:19:26,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:19:26,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:19:26,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:19:26,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:19:18" (1/3) ... [2024-11-28 05:19:26,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e1f04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:19:26, skipping insertion in model container [2024-11-28 05:19:26,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:19:19" (2/3) ... [2024-11-28 05:19:26,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e1f04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:19:26, skipping insertion in model container [2024-11-28 05:19:26,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:19:26" (3/3) ... [2024-11-28 05:19:26,025 INFO L128 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-28 05:19:26,041 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:19:26,043 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stack_longer-2.i that has 3 procedures, 46 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-28 05:19:26,043 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:19:26,127 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:19:26,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 122 flow [2024-11-28 05:19:26,220 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-28 05:19:26,222 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:19:26,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 9/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-28 05:19:26,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 122 flow [2024-11-28 05:19:26,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 51 transitions, 114 flow [2024-11-28 05:19:26,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:19:26,250 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;@702fd53d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:19:26,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 05:19:26,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:19:26,273 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-28 05:19:26,274 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:19:26,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:26,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:26,275 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 05:19:26,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1922669399, now seen corresponding path program 1 times [2024-11-28 05:19:26,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915357906] [2024-11-28 05:19:26,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:26,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:27,151 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 05:19:27,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:27,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915357906] [2024-11-28 05:19:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915357906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:27,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:27,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:19:27,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284246207] [2024-11-28 05:19:27,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:27,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:19:27,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:27,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:19:27,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:19:27,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:19:27,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 05:19:27,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:27,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:19:27,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:27,663 INFO L124 PetriNetUnfolderBase]: 459/866 cut-off events. [2024-11-28 05:19:27,663 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-28 05:19:27,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 866 events. 459/866 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4370 event pairs, 245 based on Foata normal form. 94/832 useless extension candidates. Maximal degree in co-relation 1560. Up to 520 conditions per place. [2024-11-28 05:19:27,675 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-11-28 05:19:27,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 225 flow [2024-11-28 05:19:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:19:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:19:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-28 05:19:27,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-28 05:19:27,700 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 114 flow. Second operand 4 states and 113 transitions. [2024-11-28 05:19:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 225 flow [2024-11-28 05:19:27,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:19:27,714 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 98 flow [2024-11-28 05:19:27,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-28 05:19:27,723 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-28 05:19:27,723 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 98 flow [2024-11-28 05:19:27,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 05:19:27,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:27,725 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:27,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:19:27,725 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 05:19:27,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1922669400, now seen corresponding path program 1 times [2024-11-28 05:19:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:27,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613884186] [2024-11-28 05:19:27,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:28,668 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 05:19:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613884186] [2024-11-28 05:19:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613884186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:19:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480713387] [2024-11-28 05:19:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:28,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:19:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:28,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:19:28,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:28,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:19:28,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 05:19:28,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:28,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:19:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:29,179 INFO L124 PetriNetUnfolderBase]: 574/1064 cut-off events. [2024-11-28 05:19:29,180 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-28 05:19:29,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1064 events. 574/1064 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5043 event pairs, 179 based on Foata normal form. 9/926 useless extension candidates. Maximal degree in co-relation 695. Up to 755 conditions per place. [2024-11-28 05:19:29,192 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-28 05:19:29,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 293 flow [2024-11-28 05:19:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:19:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:19:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-28 05:19:29,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-28 05:19:29,197 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 98 flow. Second operand 5 states and 143 transitions. [2024-11-28 05:19:29,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 293 flow [2024-11-28 05:19:29,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:19:29,202 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 128 flow [2024-11-28 05:19:29,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-28 05:19:29,203 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-11-28 05:19:29,203 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 128 flow [2024-11-28 05:19:29,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 05:19:29,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:29,204 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:29,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:19:29,206 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 05:19:29,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:29,207 INFO L85 PathProgramCache]: Analyzing trace with hash 225987741, now seen corresponding path program 1 times [2024-11-28 05:19:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:29,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563519466] [2024-11-28 05:19:29,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:29,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:29,472 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 05:19:29,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:29,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563519466] [2024-11-28 05:19:29,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563519466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:29,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:29,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:19:29,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183417062] [2024-11-28 05:19:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:29,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:19:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:29,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:19:29,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:19:29,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:29,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 05:19:29,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:29,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:29,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:29,966 INFO L124 PetriNetUnfolderBase]: 823/1511 cut-off events. [2024-11-28 05:19:29,967 INFO L125 PetriNetUnfolderBase]: For 263/266 co-relation queries the response was YES. [2024-11-28 05:19:29,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3206 conditions, 1511 events. 823/1511 cut-off events. For 263/266 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7743 event pairs, 363 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 1126. Up to 857 conditions per place. [2024-11-28 05:19:29,982 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-28 05:19:29,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 370 flow [2024-11-28 05:19:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:19:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:19:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 05:19:29,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-28 05:19:29,988 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 128 flow. Second operand 4 states and 135 transitions. [2024-11-28 05:19:29,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 370 flow [2024-11-28 05:19:29,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:19:29,996 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 159 flow [2024-11-28 05:19:29,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-28 05:19:29,998 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-28 05:19:29,999 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 159 flow [2024-11-28 05:19:29,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 05:19:29,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:29,999 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:29,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:19:29,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === 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 05:19:30,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1965493373, now seen corresponding path program 1 times [2024-11-28 05:19:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098632187] [2024-11-28 05:19:30,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:30,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:30,183 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 05:19:30,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:30,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098632187] [2024-11-28 05:19:30,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098632187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:30,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:30,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:19:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857705237] [2024-11-28 05:19:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:30,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:19:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:30,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:19:30,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:19:30,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:30,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 05:19:30,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:30,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:30,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:30,627 INFO L124 PetriNetUnfolderBase]: 957/1715 cut-off events. [2024-11-28 05:19:30,628 INFO L125 PetriNetUnfolderBase]: For 546/548 co-relation queries the response was YES. [2024-11-28 05:19:30,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 1715 events. 957/1715 cut-off events. For 546/548 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8840 event pairs, 395 based on Foata normal form. 12/1574 useless extension candidates. Maximal degree in co-relation 1267. Up to 1191 conditions per place. [2024-11-28 05:19:30,647 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 55 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-28 05:19:30,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 328 flow [2024-11-28 05:19:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:19:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:19:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-28 05:19:30,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-28 05:19:30,649 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 159 flow. Second operand 3 states and 103 transitions. [2024-11-28 05:19:30,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 328 flow [2024-11-28 05:19:30,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:19:30,659 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 168 flow [2024-11-28 05:19:30,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-28 05:19:30,661 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-28 05:19:30,661 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 168 flow [2024-11-28 05:19:30,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 05:19:30,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:30,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:30,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:19:30,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 05:19:30,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1311745931, now seen corresponding path program 1 times [2024-11-28 05:19:30,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:30,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046332494] [2024-11-28 05:19:30,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:30,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:30,989 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 05:19:30,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046332494] [2024-11-28 05:19:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046332494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:30,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:30,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:19:30,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835114279] [2024-11-28 05:19:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:30,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:19:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:30,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:19:30,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:19:30,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:30,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 05:19:30,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:30,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:30,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:31,274 INFO L124 PetriNetUnfolderBase]: 499/1032 cut-off events. [2024-11-28 05:19:31,274 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-28 05:19:31,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1032 events. 499/1032 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4811 event pairs, 105 based on Foata normal form. 60/1020 useless extension candidates. Maximal degree in co-relation 989. Up to 634 conditions per place. [2024-11-28 05:19:31,282 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-28 05:19:31,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 300 flow [2024-11-28 05:19:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:19:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:19:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-28 05:19:31,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-28 05:19:31,284 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 168 flow. Second operand 3 states and 91 transitions. [2024-11-28 05:19:31,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 300 flow [2024-11-28 05:19:31,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 05:19:31,289 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2024-11-28 05:19:31,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-28 05:19:31,290 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-28 05:19:31,290 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2024-11-28 05:19:31,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 05:19:31,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:31,291 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:31,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:19:31,291 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 05:19:31,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1055998178, now seen corresponding path program 1 times [2024-11-28 05:19:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385336796] [2024-11-28 05:19:31,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:32,012 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 05:19:32,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:32,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385336796] [2024-11-28 05:19:32,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385336796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:19:32,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128826261] [2024-11-28 05:19:32,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:32,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:32,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:32,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:32,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:19:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:32,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:19:32,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:32,832 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 05:19:32,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:19:33,050 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 05:19:33,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128826261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:19:33,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:19:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-28 05:19:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409332302] [2024-11-28 05:19:33,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:19:33,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:19:33,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:33,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:19:33,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:19:33,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-28 05:19:33,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 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 05:19:33,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:33,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-28 05:19:33,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:34,577 INFO L124 PetriNetUnfolderBase]: 1740/3509 cut-off events. [2024-11-28 05:19:34,577 INFO L125 PetriNetUnfolderBase]: For 796/796 co-relation queries the response was YES. [2024-11-28 05:19:34,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 3509 events. 1740/3509 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19716 event pairs, 262 based on Foata normal form. 54/3328 useless extension candidates. Maximal degree in co-relation 2561. Up to 699 conditions per place. [2024-11-28 05:19:34,608 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 194 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-11-28 05:19:34,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 1170 flow [2024-11-28 05:19:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:19:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:19:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-28 05:19:34,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-11-28 05:19:34,611 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 15 states and 425 transitions. [2024-11-28 05:19:34,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 1170 flow [2024-11-28 05:19:34,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:19:34,619 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 417 flow [2024-11-28 05:19:34,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-28 05:19:34,620 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-11-28 05:19:34,620 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 417 flow [2024-11-28 05:19:34,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 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 05:19:34,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:34,620 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 05:19:34,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:19:34,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 05:19:34,822 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 05:19:34,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1682308998, now seen corresponding path program 1 times [2024-11-28 05:19:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:34,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249408633] [2024-11-28 05:19:34,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:35,114 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 05:19:35,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:35,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249408633] [2024-11-28 05:19:35,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249408633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:35,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:35,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:19:35,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045682175] [2024-11-28 05:19:35,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:35,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:19:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:35,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:19:35,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:35,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:19:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 05:19:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:35,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:19:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:35,748 INFO L124 PetriNetUnfolderBase]: 1695/3429 cut-off events. [2024-11-28 05:19:35,748 INFO L125 PetriNetUnfolderBase]: For 1886/1886 co-relation queries the response was YES. [2024-11-28 05:19:35,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 3429 events. 1695/3429 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19723 event pairs, 958 based on Foata normal form. 0/3315 useless extension candidates. Maximal degree in co-relation 7329. Up to 2028 conditions per place. [2024-11-28 05:19:35,781 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 55 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-11-28 05:19:35,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 591 flow [2024-11-28 05:19:35,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:19:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:19:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-28 05:19:35,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-28 05:19:35,783 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 417 flow. Second operand 5 states and 117 transitions. [2024-11-28 05:19:35,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 591 flow [2024-11-28 05:19:35,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 581 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-28 05:19:35,800 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 441 flow [2024-11-28 05:19:35,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-28 05:19:35,801 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2024-11-28 05:19:35,801 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 441 flow [2024-11-28 05:19:35,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 05:19:35,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:35,802 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 05:19:35,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:19:35,802 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 05:19:35,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1682308997, now seen corresponding path program 1 times [2024-11-28 05:19:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450600819] [2024-11-28 05:19:35,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:36,407 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 05:19:36,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:36,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450600819] [2024-11-28 05:19:36,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450600819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:36,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:36,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:19:36,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474401210] [2024-11-28 05:19:36,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:36,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:19:36,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:36,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:19:36,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:19:36,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:19:36,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:19:36,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:36,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:19:36,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:37,361 INFO L124 PetriNetUnfolderBase]: 1847/3723 cut-off events. [2024-11-28 05:19:37,361 INFO L125 PetriNetUnfolderBase]: For 2907/2907 co-relation queries the response was YES. [2024-11-28 05:19:37,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9849 conditions, 3723 events. 1847/3723 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21461 event pairs, 510 based on Foata normal form. 0/3573 useless extension candidates. Maximal degree in co-relation 8312. Up to 2690 conditions per place. [2024-11-28 05:19:37,408 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 100 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2024-11-28 05:19:37,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 118 transitions, 834 flow [2024-11-28 05:19:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:19:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:19:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-28 05:19:37,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-28 05:19:37,411 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 441 flow. Second operand 6 states and 168 transitions. [2024-11-28 05:19:37,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 118 transitions, 834 flow [2024-11-28 05:19:37,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 118 transitions, 788 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:19:37,433 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 472 flow [2024-11-28 05:19:37,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-11-28 05:19:37,434 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2024-11-28 05:19:37,436 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 472 flow [2024-11-28 05:19:37,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:19:37,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:37,437 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] [2024-11-28 05:19:37,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:19:37,437 INFO L396 AbstractCegarLoop]: === Iteration 9 === 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 05:19:37,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash -130602789, now seen corresponding path program 1 times [2024-11-28 05:19:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908738265] [2024-11-28 05:19:37,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:37,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908738265] [2024-11-28 05:19:37,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908738265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:37,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:37,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:19:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17147889] [2024-11-28 05:19:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:37,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:19:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:37,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:19:37,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:19:37,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:37,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 05:19:37,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:37,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:37,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:38,463 INFO L124 PetriNetUnfolderBase]: 2725/5699 cut-off events. [2024-11-28 05:19:38,464 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-11-28 05:19:38,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 5699 events. 2725/5699 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 38035 event pairs, 1359 based on Foata normal form. 137/5634 useless extension candidates. Maximal degree in co-relation 12588. Up to 3244 conditions per place. [2024-11-28 05:19:38,519 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 122 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-11-28 05:19:38,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 1106 flow [2024-11-28 05:19:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:19:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:19:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-28 05:19:38,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-28 05:19:38,520 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 472 flow. Second operand 3 states and 104 transitions. [2024-11-28 05:19:38,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 1106 flow [2024-11-28 05:19:38,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 1094 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 05:19:38,544 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 477 flow [2024-11-28 05:19:38,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-28 05:19:38,545 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-28 05:19:38,545 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 477 flow [2024-11-28 05:19:38,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 05:19:38,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:38,545 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 05:19:38,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:19:38,545 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 05:19:38,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:38,545 INFO L85 PathProgramCache]: Analyzing trace with hash 883376185, now seen corresponding path program 1 times [2024-11-28 05:19:38,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:38,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874912512] [2024-11-28 05:19:38,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:38,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:39,869 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 05:19:39,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:39,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874912512] [2024-11-28 05:19:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874912512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:39,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:19:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059805358] [2024-11-28 05:19:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:39,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:19:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:39,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:19:39,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:19:39,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:39,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 05:19:39,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:39,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:39,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:41,659 INFO L124 PetriNetUnfolderBase]: 3462/7028 cut-off events. [2024-11-28 05:19:41,660 INFO L125 PetriNetUnfolderBase]: For 5794/5794 co-relation queries the response was YES. [2024-11-28 05:19:41,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19738 conditions, 7028 events. 3462/7028 cut-off events. For 5794/5794 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 44920 event pairs, 786 based on Foata normal form. 0/6808 useless extension candidates. Maximal degree in co-relation 16163. Up to 3938 conditions per place. [2024-11-28 05:19:41,746 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 159 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2024-11-28 05:19:41,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 182 transitions, 1302 flow [2024-11-28 05:19:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:19:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:19:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-11-28 05:19:41,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 05:19:41,749 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 477 flow. Second operand 11 states and 297 transitions. [2024-11-28 05:19:41,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 182 transitions, 1302 flow [2024-11-28 05:19:41,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 182 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:19:41,786 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 523 flow [2024-11-28 05:19:41,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=523, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2024-11-28 05:19:41,788 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 52 predicate places. [2024-11-28 05:19:41,789 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 523 flow [2024-11-28 05:19:41,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 05:19:41,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:41,790 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] [2024-11-28 05:19:41,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:19:41,790 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 05:19:41,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash 536552035, now seen corresponding path program 1 times [2024-11-28 05:19:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:41,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243430143] [2024-11-28 05:19:41,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:41,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243430143] [2024-11-28 05:19:42,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243430143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:42,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:42,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:19:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564203974] [2024-11-28 05:19:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:42,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:19:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:42,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:19:42,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:19:42,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:42,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 05:19:42,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:42,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:42,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:43,683 INFO L124 PetriNetUnfolderBase]: 4935/10396 cut-off events. [2024-11-28 05:19:43,683 INFO L125 PetriNetUnfolderBase]: For 10323/10323 co-relation queries the response was YES. [2024-11-28 05:19:43,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29158 conditions, 10396 events. 4935/10396 cut-off events. For 10323/10323 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 76314 event pairs, 1723 based on Foata normal form. 307/10384 useless extension candidates. Maximal degree in co-relation 24238. Up to 4409 conditions per place. [2024-11-28 05:19:43,809 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 189 selfloop transitions, 3 changer transitions 0/204 dead transitions. [2024-11-28 05:19:43,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 204 transitions, 1774 flow [2024-11-28 05:19:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:19:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:19:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-28 05:19:43,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 05:19:43,812 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 523 flow. Second operand 4 states and 144 transitions. [2024-11-28 05:19:43,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 204 transitions, 1774 flow [2024-11-28 05:19:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 204 transitions, 1721 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-28 05:19:43,872 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 519 flow [2024-11-28 05:19:43,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=519, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-11-28 05:19:43,874 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 50 predicate places. [2024-11-28 05:19:43,874 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 519 flow [2024-11-28 05:19:43,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 05:19:43,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:43,875 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:43,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:19:43,875 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 05:19:43,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1046330903, now seen corresponding path program 1 times [2024-11-28 05:19:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:43,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134858114] [2024-11-28 05:19:43,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:44,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134858114] [2024-11-28 05:19:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134858114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:19:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494677639] [2024-11-28 05:19:44,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:44,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:44,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:44,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:19:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:44,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 05:19:44,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:45,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:19:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494677639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:19:45,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:19:45,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 05:19:45,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420084591] [2024-11-28 05:19:45,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:19:45,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:19:45,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:45,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:19:45,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:19:45,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-28 05:19:45,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 519 flow. Second operand has 17 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 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 05:19:45,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:45,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-28 05:19:45,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:49,589 INFO L124 PetriNetUnfolderBase]: 10387/20856 cut-off events. [2024-11-28 05:19:49,589 INFO L125 PetriNetUnfolderBase]: For 25778/25786 co-relation queries the response was YES. [2024-11-28 05:19:49,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62308 conditions, 20856 events. 10387/20856 cut-off events. For 25778/25786 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 159951 event pairs, 1566 based on Foata normal form. 225/20384 useless extension candidates. Maximal degree in co-relation 47591. Up to 3457 conditions per place. [2024-11-28 05:19:49,803 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 333 selfloop transitions, 57 changer transitions 0/400 dead transitions. [2024-11-28 05:19:49,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 400 transitions, 2862 flow [2024-11-28 05:19:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 05:19:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 05:19:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 590 transitions. [2024-11-28 05:19:49,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-28 05:19:49,812 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 519 flow. Second operand 20 states and 590 transitions. [2024-11-28 05:19:49,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 400 transitions, 2862 flow [2024-11-28 05:19:49,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 400 transitions, 2807 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-28 05:19:49,986 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 1025 flow [2024-11-28 05:19:49,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1025, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2024-11-28 05:19:49,988 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 79 predicate places. [2024-11-28 05:19:49,988 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 1025 flow [2024-11-28 05:19:49,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 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 05:19:49,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:49,988 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:50,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:19:50,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:50,189 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 05:19:50,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash -430964173, now seen corresponding path program 1 times [2024-11-28 05:19:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:50,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963910752] [2024-11-28 05:19:50,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:19:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963910752] [2024-11-28 05:19:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963910752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:19:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392606172] [2024-11-28 05:19:51,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:51,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:19:51,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:19:51,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:19:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:51,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 05:19:51,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:19:52,009 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 25 treesize of output 1 [2024-11-28 05:19:52,199 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 80 treesize of output 32 [2024-11-28 05:19:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:19:52,336 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:19:52,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392606172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:52,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:19:52,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2024-11-28 05:19:52,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993609610] [2024-11-28 05:19:52,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:52,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:19:52,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:52,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:19:52,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:19:52,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:52,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 1025 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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 05:19:52,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:52,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:52,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:19:57,679 INFO L124 PetriNetUnfolderBase]: 14547/29199 cut-off events. [2024-11-28 05:19:57,680 INFO L125 PetriNetUnfolderBase]: For 52878/52878 co-relation queries the response was YES. [2024-11-28 05:19:57,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94041 conditions, 29199 events. 14547/29199 cut-off events. For 52878/52878 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 241363 event pairs, 2010 based on Foata normal form. 0/28346 useless extension candidates. Maximal degree in co-relation 87527. Up to 5948 conditions per place. [2024-11-28 05:19:57,952 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 164 selfloop transitions, 140 changer transitions 0/316 dead transitions. [2024-11-28 05:19:57,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 316 transitions, 2799 flow [2024-11-28 05:19:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:19:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:19:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 420 transitions. [2024-11-28 05:19:57,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-11-28 05:19:57,955 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 1025 flow. Second operand 17 states and 420 transitions. [2024-11-28 05:19:57,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 316 transitions, 2799 flow [2024-11-28 05:19:58,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 316 transitions, 2642 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-11-28 05:19:58,309 INFO L231 Difference]: Finished difference. Result has 145 places, 193 transitions, 1907 flow [2024-11-28 05:19:58,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1907, PETRI_PLACES=145, PETRI_TRANSITIONS=193} [2024-11-28 05:19:58,310 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 96 predicate places. [2024-11-28 05:19:58,310 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 193 transitions, 1907 flow [2024-11-28 05:19:58,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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 05:19:58,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:19:58,310 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:19:58,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:19:58,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:19:58,511 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 05:19:58,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash 137190793, now seen corresponding path program 2 times [2024-11-28 05:19:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:58,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431569092] [2024-11-28 05:19:58,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:19:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:58,550 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:19:58,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:19:58,641 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 05:19:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:58,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431569092] [2024-11-28 05:19:58,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431569092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:58,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:58,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:19:58,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108752466] [2024-11-28 05:19:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:58,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:19:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:58,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:19:58,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:19:58,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-28 05:19:58,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 193 transitions, 1907 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 05:19:58,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:19:58,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-28 05:19:58,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:03,210 INFO L124 PetriNetUnfolderBase]: 14516/29029 cut-off events. [2024-11-28 05:20:03,210 INFO L125 PetriNetUnfolderBase]: For 58182/58182 co-relation queries the response was YES. [2024-11-28 05:20:03,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97985 conditions, 29029 events. 14516/29029 cut-off events. For 58182/58182 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 240304 event pairs, 11236 based on Foata normal form. 70/28249 useless extension candidates. Maximal degree in co-relation 91068. Up to 23903 conditions per place. [2024-11-28 05:20:03,421 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 229 selfloop transitions, 3 changer transitions 0/244 dead transitions. [2024-11-28 05:20:03,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 244 transitions, 2754 flow [2024-11-28 05:20:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:20:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-11-28 05:20:03,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6435185185185185 [2024-11-28 05:20:03,423 INFO L175 Difference]: Start difference. First operand has 145 places, 193 transitions, 1907 flow. Second operand 4 states and 139 transitions. [2024-11-28 05:20:03,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 244 transitions, 2754 flow [2024-11-28 05:20:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 244 transitions, 2571 flow, removed 91 selfloop flow, removed 1 redundant places. [2024-11-28 05:20:03,912 INFO L231 Difference]: Finished difference. Result has 148 places, 194 transitions, 1774 flow [2024-11-28 05:20:03,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1774, PETRI_PLACES=148, PETRI_TRANSITIONS=194} [2024-11-28 05:20:03,913 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 99 predicate places. [2024-11-28 05:20:03,913 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 194 transitions, 1774 flow [2024-11-28 05:20:03,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 05:20:03,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:03,913 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:03,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:20:03,914 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 05:20:03,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1959397655, now seen corresponding path program 1 times [2024-11-28 05:20:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822530107] [2024-11-28 05:20:03,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:03,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822530107] [2024-11-28 05:20:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822530107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726938658] [2024-11-28 05:20:04,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:04,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:04,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:20:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:04,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 05:20:04,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:05,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:05,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726938658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:05,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:05,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-28 05:20:05,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943927203] [2024-11-28 05:20:05,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:05,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:20:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:05,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:20:05,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:20:05,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-28 05:20:05,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 194 transitions, 1774 flow. Second operand has 17 states, 17 states have (on average 19.647058823529413) internal successors, (334), 17 states have internal predecessors, (334), 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 05:20:05,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:05,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-28 05:20:05,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:11,372 INFO L124 PetriNetUnfolderBase]: 15081/29688 cut-off events. [2024-11-28 05:20:11,372 INFO L125 PetriNetUnfolderBase]: For 52537/52543 co-relation queries the response was YES. [2024-11-28 05:20:11,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100002 conditions, 29688 events. 15081/29688 cut-off events. For 52537/52543 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 238793 event pairs, 2852 based on Foata normal form. 196/29173 useless extension candidates. Maximal degree in co-relation 93388. Up to 5039 conditions per place. [2024-11-28 05:20:11,624 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 431 selfloop transitions, 149 changer transitions 0/590 dead transitions. [2024-11-28 05:20:11,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 590 transitions, 5168 flow [2024-11-28 05:20:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 05:20:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 05:20:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 694 transitions. [2024-11-28 05:20:11,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5140740740740741 [2024-11-28 05:20:11,627 INFO L175 Difference]: Start difference. First operand has 148 places, 194 transitions, 1774 flow. Second operand 25 states and 694 transitions. [2024-11-28 05:20:11,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 590 transitions, 5168 flow [2024-11-28 05:20:11,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 590 transitions, 5119 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-28 05:20:11,968 INFO L231 Difference]: Finished difference. Result has 182 places, 274 transitions, 2944 flow [2024-11-28 05:20:11,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2944, PETRI_PLACES=182, PETRI_TRANSITIONS=274} [2024-11-28 05:20:11,969 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 133 predicate places. [2024-11-28 05:20:11,969 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 274 transitions, 2944 flow [2024-11-28 05:20:11,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.647058823529413) internal successors, (334), 17 states have internal predecessors, (334), 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 05:20:11,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:11,970 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:11,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:20:12,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:20:12,170 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-28 05:20:12,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1977565273, now seen corresponding path program 1 times [2024-11-28 05:20:12,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:12,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726318802] [2024-11-28 05:20:12,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:12,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726318802] [2024-11-28 05:20:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726318802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:12,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933630486] [2024-11-28 05:20:12,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:12,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:12,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:12,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:20:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:12,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:20:12,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:12,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933630486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:20:12,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:20:12,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-28 05:20:12,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738854664] [2024-11-28 05:20:12,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:12,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:20:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:12,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:20:12,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:20:12,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:20:12,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 274 transitions, 2944 flow. Second operand has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 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 05:20:12,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:12,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:20:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:21,540 INFO L124 PetriNetUnfolderBase]: 22564/44763 cut-off events. [2024-11-28 05:20:21,540 INFO L125 PetriNetUnfolderBase]: For 136647/136701 co-relation queries the response was YES. [2024-11-28 05:20:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164695 conditions, 44763 events. 22564/44763 cut-off events. For 136647/136701 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 376124 event pairs, 5828 based on Foata normal form. 1438/45796 useless extension candidates. Maximal degree in co-relation 156583. Up to 7661 conditions per place. [2024-11-28 05:20:22,018 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 602 selfloop transitions, 168 changer transitions 0/781 dead transitions. [2024-11-28 05:20:22,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 781 transitions, 8838 flow [2024-11-28 05:20:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:20:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:20:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 423 transitions. [2024-11-28 05:20:22,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2024-11-28 05:20:22,022 INFO L175 Difference]: Start difference. First operand has 182 places, 274 transitions, 2944 flow. Second operand 11 states and 423 transitions. [2024-11-28 05:20:22,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 781 transitions, 8838 flow [2024-11-28 05:20:23,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 781 transitions, 8265 flow, removed 219 selfloop flow, removed 10 redundant places. [2024-11-28 05:20:23,388 INFO L231 Difference]: Finished difference. Result has 191 places, 360 transitions, 4464 flow [2024-11-28 05:20:23,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4464, PETRI_PLACES=191, PETRI_TRANSITIONS=360} [2024-11-28 05:20:23,388 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 142 predicate places. [2024-11-28 05:20:23,388 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 360 transitions, 4464 flow [2024-11-28 05:20:23,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 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 05:20:23,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:23,389 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:23,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:23,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b850d5f-53ee-4e1f-bee7-534065f4fb06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:20:23,589 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 05:20:23,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash 116693128, now seen corresponding path program 1 times [2024-11-28 05:20:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:23,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416842098] [2024-11-28 05:20:23,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 05:20:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416842098] [2024-11-28 05:20:23,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416842098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:23,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:23,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:20:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752477755] [2024-11-28 05:20:23,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:23,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:23,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:23,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:23,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:23,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:20:23,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 360 transitions, 4464 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 05:20:23,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:23,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:20:23,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:20:31,448 INFO L124 PetriNetUnfolderBase]: 20149/39802 cut-off events. [2024-11-28 05:20:31,449 INFO L125 PetriNetUnfolderBase]: For 135097/135166 co-relation queries the response was YES. [2024-11-28 05:20:31,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152467 conditions, 39802 events. 20149/39802 cut-off events. For 135097/135166 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 326347 event pairs, 14387 based on Foata normal form. 651/40265 useless extension candidates. Maximal degree in co-relation 142678. Up to 31369 conditions per place. [2024-11-28 05:20:31,809 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 276 selfloop transitions, 77 changer transitions 0/364 dead transitions. [2024-11-28 05:20:31,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 364 transitions, 5046 flow [2024-11-28 05:20:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:20:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-28 05:20:31,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-28 05:20:31,810 INFO L175 Difference]: Start difference. First operand has 191 places, 360 transitions, 4464 flow. Second operand 3 states and 98 transitions. [2024-11-28 05:20:31,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 364 transitions, 5046 flow [2024-11-28 05:20:32,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 364 transitions, 4953 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-28 05:20:32,527 INFO L231 Difference]: Finished difference. Result has 191 places, 332 transitions, 4334 flow [2024-11-28 05:20:32,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3932, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4334, PETRI_PLACES=191, PETRI_TRANSITIONS=332} [2024-11-28 05:20:32,528 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 142 predicate places. [2024-11-28 05:20:32,528 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 332 transitions, 4334 flow [2024-11-28 05:20:32,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 05:20:32,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:20:32,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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 05:20:32,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:20:32,528 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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 05:20:32,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1768335427, now seen corresponding path program 3 times [2024-11-28 05:20:32,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:32,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222375921] [2024-11-28 05:20:32,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:20:32,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:32,553 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:20:32,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:20:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 05:20:32,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222375921] [2024-11-28 05:20:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222375921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:32,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:32,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 05:20:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194524412] [2024-11-28 05:20:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:32,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:32,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:32,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:32,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 05:20:32,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 332 transitions, 4334 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 05:20:32,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:20:32,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 05:20:32,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand