./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/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_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/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_ca1b1207-85c7-463c-9666-ffc356d883ce/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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:53:39,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:53:39,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:53:39,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:53:39,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:53:39,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:53:39,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:53:39,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:53:39,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:53:39,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:53:39,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:53:39,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:53:39,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:53:39,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:53:39,490 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:53:39,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:53:39,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:53:39,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:53:39,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:53:39,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:53:39,492 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:53:39,492 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:53:39,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:53:39,493 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:53:39,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:53:39,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:53:39,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:53:39,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:53:39,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:53:39,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:53:39,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:53:39,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:53:39,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:53:39,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:53:39,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:53:39,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:53:39,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:53:39,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:53:39,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:53:39,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:53:39,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:53:39,497 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_ca1b1207-85c7-463c-9666-ffc356d883ce/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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-28 03:53:39,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:53:39,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:53:39,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:53:39,827 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:53:39,827 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:53:39,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-28 03:53:42,677 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/data/b8ba4c1fb/e7ed33db2b2d492398ea0bc29310e8ff/FLAG796c44c53 [2024-11-28 03:53:43,004 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:53:43,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-28 03:53:43,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/data/b8ba4c1fb/e7ed33db2b2d492398ea0bc29310e8ff/FLAG796c44c53 [2024-11-28 03:53:43,251 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/data/b8ba4c1fb/e7ed33db2b2d492398ea0bc29310e8ff [2024-11-28 03:53:43,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:53:43,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:53:43,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:43,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:53:43,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:53:43,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6427ab88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43, skipping insertion in model container [2024-11-28 03:53:43,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:53:43,475 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:53:43,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:43,497 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:53:43,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:43,562 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:53:43,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43 WrapperNode [2024-11-28 03:53:43,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:43,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:43,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:53:43,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:53:43,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,610 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 189 [2024-11-28 03:53:43,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:43,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:53:43,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:53:43,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:53:43,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,643 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 03:53:43,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,659 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:53:43,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:53:43,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:53:43,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:53:43,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (1/1) ... [2024-11-28 03:53:43,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:53:43,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:43,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:53:43,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:53:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:53:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:53:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:53:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:53:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:53:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:53:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:53:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:53:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:53:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:53:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:53:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:53:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:53:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:53:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:53:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:53:43,758 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:53:43,872 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:53:43,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:53:44,353 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:53:44,353 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:53:44,874 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:53:44,875 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:53:44,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:44 BoogieIcfgContainer [2024-11-28 03:53:44,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:53:44,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:53:44,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:53:44,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:53:44,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:53:43" (1/3) ... [2024-11-28 03:53:44,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e6e862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:53:44, skipping insertion in model container [2024-11-28 03:53:44,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:43" (2/3) ... [2024-11-28 03:53:44,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e6e862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:53:44, skipping insertion in model container [2024-11-28 03:53:44,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:44" (3/3) ... [2024-11-28 03:53:44,888 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-28 03:53:44,904 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:53:44,906 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 51 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2024-11-28 03:53:44,906 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:53:45,024 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 03:53:45,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 122 flow [2024-11-28 03:53:45,116 INFO L124 PetriNetUnfolderBase]: 4/52 cut-off events. [2024-11-28 03:53:45,119 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:53:45,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 4/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 153 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-28 03:53:45,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 54 transitions, 122 flow [2024-11-28 03:53:45,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 51 transitions, 114 flow [2024-11-28 03:53:45,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:53:45,151 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;@180b2935, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:53:45,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2024-11-28 03:53:45,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:53:45,155 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-28 03:53:45,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:53:45,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:45,156 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:53:45,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:45,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 661212, now seen corresponding path program 1 times [2024-11-28 03:53:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840095655] [2024-11-28 03:53:45,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:45,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840095655] [2024-11-28 03:53:45,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840095655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:45,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:45,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:53:45,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505059376] [2024-11-28 03:53:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:45,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:53:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:45,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:53:45,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:53:45,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:45,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:45,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:45,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:45,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:45,851 INFO L124 PetriNetUnfolderBase]: 219/390 cut-off events. [2024-11-28 03:53:45,852 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 03:53:45,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 390 events. 219/390 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1945 event pairs, 182 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 729. Up to 373 conditions per place. [2024-11-28 03:53:45,860 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-28 03:53:45,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 142 flow [2024-11-28 03:53:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:53:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:53:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-28 03:53:45,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-28 03:53:45,881 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 114 flow. Second operand 3 states and 69 transitions. [2024-11-28 03:53:45,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 142 flow [2024-11-28 03:53:45,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 03:53:45,892 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 78 flow [2024-11-28 03:53:45,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-28 03:53:45,900 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -18 predicate places. [2024-11-28 03:53:45,900 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 78 flow [2024-11-28 03:53:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:45,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:45,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:53:45,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:53:45,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:45,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:45,903 INFO L85 PathProgramCache]: Analyzing trace with hash 661213, now seen corresponding path program 1 times [2024-11-28 03:53:45,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:45,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672558189] [2024-11-28 03:53:45,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672558189] [2024-11-28 03:53:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672558189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:46,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:46,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:53:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172557688] [2024-11-28 03:53:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:46,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:46,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:46,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:46,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:46,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:46,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:46,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:46,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:46,622 INFO L124 PetriNetUnfolderBase]: 220/393 cut-off events. [2024-11-28 03:53:46,622 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:53:46,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 393 events. 220/393 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1955 event pairs, 182 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 761. Up to 382 conditions per place. [2024-11-28 03:53:46,626 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 31 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-11-28 03:53:46,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 154 flow [2024-11-28 03:53:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-28 03:53:46,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-11-28 03:53:46,628 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 78 flow. Second operand 4 states and 68 transitions. [2024-11-28 03:53:46,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 154 flow [2024-11-28 03:53:46,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:53:46,630 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 101 flow [2024-11-28 03:53:46,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2024-11-28 03:53:46,631 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -15 predicate places. [2024-11-28 03:53:46,631 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 101 flow [2024-11-28 03:53:46,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:46,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:46,632 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 03:53:46,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:53:46,632 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:46,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash 20499636, now seen corresponding path program 1 times [2024-11-28 03:53:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873175904] [2024-11-28 03:53:46,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873175904] [2024-11-28 03:53:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873175904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:47,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:53:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124875991] [2024-11-28 03:53:47,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:47,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:47,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:47,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:47,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:47,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:47,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:47,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:47,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:47,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:47,343 INFO L124 PetriNetUnfolderBase]: 221/396 cut-off events. [2024-11-28 03:53:47,344 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:53:47,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 396 events. 221/396 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1982 event pairs, 182 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 782. Up to 381 conditions per place. [2024-11-28 03:53:47,351 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-11-28 03:53:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 183 flow [2024-11-28 03:53:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:53:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:53:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-11-28 03:53:47,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29259259259259257 [2024-11-28 03:53:47,355 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 101 flow. Second operand 5 states and 79 transitions. [2024-11-28 03:53:47,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 183 flow [2024-11-28 03:53:47,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:53:47,358 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 135 flow [2024-11-28 03:53:47,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-11-28 03:53:47,360 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2024-11-28 03:53:47,360 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 135 flow [2024-11-28 03:53:47,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:47,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:47,360 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-28 03:53:47,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:53:47,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:47,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 635447841, now seen corresponding path program 1 times [2024-11-28 03:53:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553765717] [2024-11-28 03:53:47,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:47,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553765717] [2024-11-28 03:53:47,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553765717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139783341] [2024-11-28 03:53:47,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:47,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:47,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:47,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:47,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:53:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:47,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:53:47,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:47,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 03:53:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:48,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:48,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139783341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:48,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:48,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 03:53:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953319798] [2024-11-28 03:53:48,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:48,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:53:48,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:48,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:53:48,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:53:48,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:48,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 135 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:48,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:48,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:48,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:48,800 INFO L124 PetriNetUnfolderBase]: 222/398 cut-off events. [2024-11-28 03:53:48,800 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:53:48,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 398 events. 222/398 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 1991 event pairs, 182 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 792. Up to 382 conditions per place. [2024-11-28 03:53:48,804 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 30 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2024-11-28 03:53:48,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 226 flow [2024-11-28 03:53:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:53:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:53:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-28 03:53:48,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23842592592592593 [2024-11-28 03:53:48,806 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 135 flow. Second operand 8 states and 103 transitions. [2024-11-28 03:53:48,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 226 flow [2024-11-28 03:53:48,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:53:48,810 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 165 flow [2024-11-28 03:53:48,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-28 03:53:48,812 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2024-11-28 03:53:48,812 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 165 flow [2024-11-28 03:53:48,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:48,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:48,812 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 03:53:48,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:53:49,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:49,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:49,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1774663636, now seen corresponding path program 1 times [2024-11-28 03:53:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:49,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607685835] [2024-11-28 03:53:49,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:49,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:49,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607685835] [2024-11-28 03:53:49,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607685835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912265783] [2024-11-28 03:53:49,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:49,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:49,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:49,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:49,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:53:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:49,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:53:49,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:49,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-28 03:53:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:49,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:49,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912265783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:49,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:49,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-28 03:53:49,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121670751] [2024-11-28 03:53:49,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:49,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:53:49,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:49,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:53:49,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:53:49,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:49,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 165 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:49,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:49,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:49,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:50,465 INFO L124 PetriNetUnfolderBase]: 223/400 cut-off events. [2024-11-28 03:53:50,465 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:53:50,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 400 events. 223/400 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2002 event pairs, 182 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 800. Up to 374 conditions per place. [2024-11-28 03:53:50,469 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 24 selfloop transitions, 18 changer transitions 0/45 dead transitions. [2024-11-28 03:53:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 257 flow [2024-11-28 03:53:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:53:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:53:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-11-28 03:53:50,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23868312757201646 [2024-11-28 03:53:50,473 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 165 flow. Second operand 9 states and 116 transitions. [2024-11-28 03:53:50,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 257 flow [2024-11-28 03:53:50,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 210 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-28 03:53:50,476 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 162 flow [2024-11-28 03:53:50,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-28 03:53:50,477 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-11-28 03:53:50,478 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 162 flow [2024-11-28 03:53:50,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:50,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:50,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:50,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:53:50,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:50,679 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:50,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 822242414, now seen corresponding path program 1 times [2024-11-28 03:53:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:50,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675611646] [2024-11-28 03:53:50,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:50,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:50,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675611646] [2024-11-28 03:53:50,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675611646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:50,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:50,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:53:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954678408] [2024-11-28 03:53:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:50,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:50,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:50,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:50,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-28 03:53:50,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:50,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:50,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-28 03:53:50,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:51,019 INFO L124 PetriNetUnfolderBase]: 286/532 cut-off events. [2024-11-28 03:53:51,019 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:53:51,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 532 events. 286/532 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2755 event pairs, 213 based on Foata normal form. 15/372 useless extension candidates. Maximal degree in co-relation 701. Up to 395 conditions per place. [2024-11-28 03:53:51,023 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 63 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-28 03:53:51,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 388 flow [2024-11-28 03:53:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-28 03:53:51,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-11-28 03:53:51,025 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 162 flow. Second operand 4 states and 97 transitions. [2024-11-28 03:53:51,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 388 flow [2024-11-28 03:53:51,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 335 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-28 03:53:51,028 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 153 flow [2024-11-28 03:53:51,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-28 03:53:51,028 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2024-11-28 03:53:51,029 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 153 flow [2024-11-28 03:53:51,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:51,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:51,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:51,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:53:51,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:51,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1957347918, now seen corresponding path program 1 times [2024-11-28 03:53:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434721089] [2024-11-28 03:53:51,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:53:51,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:51,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434721089] [2024-11-28 03:53:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434721089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:51,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291131443] [2024-11-28 03:53:51,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:51,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:51,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:51,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:51,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:53:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:51,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:53:51,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:51,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:53:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:53:51,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:53:51,521 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:53:51,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 03:53:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:53:51,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:51,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 61 treesize of output 57 [2024-11-28 03:53:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:53:51,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291131443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:51,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:51,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 03:53:51,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241635790] [2024-11-28 03:53:51,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:51,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:53:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:51,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:53:51,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:53:51,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:51,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 153 flow. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:51,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:51,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:51,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:52,731 INFO L124 PetriNetUnfolderBase]: 685/1246 cut-off events. [2024-11-28 03:53:52,731 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-28 03:53:52,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 1246 events. 685/1246 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7266 event pairs, 308 based on Foata normal form. 1/844 useless extension candidates. Maximal degree in co-relation 1913. Up to 386 conditions per place. [2024-11-28 03:53:52,739 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 88 selfloop transitions, 20 changer transitions 1/112 dead transitions. [2024-11-28 03:53:52,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 112 transitions, 560 flow [2024-11-28 03:53:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:53:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:53:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-11-28 03:53:52,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.360082304526749 [2024-11-28 03:53:52,741 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 153 flow. Second operand 9 states and 175 transitions. [2024-11-28 03:53:52,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 112 transitions, 560 flow [2024-11-28 03:53:52,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 554 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:53:52,744 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 272 flow [2024-11-28 03:53:52,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-28 03:53:52,745 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-11-28 03:53:52,745 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 272 flow [2024-11-28 03:53:52,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:52,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:52,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:52,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:53:52,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:53:52,946 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:52,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1957347919, now seen corresponding path program 1 times [2024-11-28 03:53:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932569843] [2024-11-28 03:53:52,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:53:53,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:53,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932569843] [2024-11-28 03:53:53,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932569843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:53,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:53,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:53:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027027474] [2024-11-28 03:53:53,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:53,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:53,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:53,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:53,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:53,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:53,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:53,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:53,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:53,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:53,321 INFO L124 PetriNetUnfolderBase]: 517/962 cut-off events. [2024-11-28 03:53:53,322 INFO L125 PetriNetUnfolderBase]: For 1007/1007 co-relation queries the response was YES. [2024-11-28 03:53:53,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 962 events. 517/962 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5321 event pairs, 391 based on Foata normal form. 53/835 useless extension candidates. Maximal degree in co-relation 1839. Up to 883 conditions per place. [2024-11-28 03:53:53,331 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 42 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2024-11-28 03:53:53,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 370 flow [2024-11-28 03:53:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:53:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:53:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-11-28 03:53:53,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25925925925925924 [2024-11-28 03:53:53,332 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 272 flow. Second operand 5 states and 70 transitions. [2024-11-28 03:53:53,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 370 flow [2024-11-28 03:53:53,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:53:53,338 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 286 flow [2024-11-28 03:53:53,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-11-28 03:53:53,339 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-11-28 03:53:53,339 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 286 flow [2024-11-28 03:53:53,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:53,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:53,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:53,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:53:53,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:53,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1957347913, now seen corresponding path program 1 times [2024-11-28 03:53:53,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:53,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426891] [2024-11-28 03:53:53,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:53,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:53:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426891] [2024-11-28 03:53:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:53,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:53,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:53:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567995524] [2024-11-28 03:53:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:53,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:53,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:53,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:53,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:53,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:53,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:53,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:53,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:53,598 INFO L124 PetriNetUnfolderBase]: 378/727 cut-off events. [2024-11-28 03:53:53,599 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2024-11-28 03:53:53,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 727 events. 378/727 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3714 event pairs, 280 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1374. Up to 655 conditions per place. [2024-11-28 03:53:53,603 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 42 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-11-28 03:53:53,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 368 flow [2024-11-28 03:53:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:53,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-28 03:53:53,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2024-11-28 03:53:53,605 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 286 flow. Second operand 4 states and 60 transitions. [2024-11-28 03:53:53,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 368 flow [2024-11-28 03:53:53,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:53:53,609 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 270 flow [2024-11-28 03:53:53,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-28 03:53:53,611 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-11-28 03:53:53,611 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 270 flow [2024-11-28 03:53:53,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:53,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:53,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:53,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:53:53,611 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:53,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1957347912, now seen corresponding path program 1 times [2024-11-28 03:53:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480330768] [2024-11-28 03:53:53,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:53:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:53,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480330768] [2024-11-28 03:53:53,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480330768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:53,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:53,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:53:53,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845627664] [2024-11-28 03:53:53,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:53,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:53,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:53,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:53,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-28 03:53:53,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:53,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:53,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-28 03:53:53,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:54,065 INFO L124 PetriNetUnfolderBase]: 420/837 cut-off events. [2024-11-28 03:53:54,065 INFO L125 PetriNetUnfolderBase]: For 993/993 co-relation queries the response was YES. [2024-11-28 03:53:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 837 events. 420/837 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4353 event pairs, 324 based on Foata normal form. 30/820 useless extension candidates. Maximal degree in co-relation 1597. Up to 671 conditions per place. [2024-11-28 03:53:54,071 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 53 selfloop transitions, 6 changer transitions 1/63 dead transitions. [2024-11-28 03:53:54,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 418 flow [2024-11-28 03:53:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-28 03:53:54,073 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39351851851851855 [2024-11-28 03:53:54,073 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 270 flow. Second operand 4 states and 85 transitions. [2024-11-28 03:53:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 418 flow [2024-11-28 03:53:54,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:53:54,076 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 278 flow [2024-11-28 03:53:54,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-28 03:53:54,077 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-11-28 03:53:54,077 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 278 flow [2024-11-28 03:53:54,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:54,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:54,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:54,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:53:54,078 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:54,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:54,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1965642176, now seen corresponding path program 1 times [2024-11-28 03:53:54,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:54,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176894510] [2024-11-28 03:53:54,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:54,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:53:54,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:54,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176894510] [2024-11-28 03:53:54,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176894510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909758799] [2024-11-28 03:53:54,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:54,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:54,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:54,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:54,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:53:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:54,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:53:54,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:53:54,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:53:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909758799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:54,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:53:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 03:53:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509612409] [2024-11-28 03:53:54,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:54,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:54,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:54,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:53:54,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-28 03:53:54,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:54,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:54,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-28 03:53:54,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:54,756 INFO L124 PetriNetUnfolderBase]: 281/581 cut-off events. [2024-11-28 03:53:54,756 INFO L125 PetriNetUnfolderBase]: For 893/893 co-relation queries the response was YES. [2024-11-28 03:53:54,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 581 events. 281/581 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2699 event pairs, 209 based on Foata normal form. 37/603 useless extension candidates. Maximal degree in co-relation 1136. Up to 511 conditions per place. [2024-11-28 03:53:54,760 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 37 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-11-28 03:53:54,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 348 flow [2024-11-28 03:53:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-28 03:53:54,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-11-28 03:53:54,761 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 278 flow. Second operand 4 states and 66 transitions. [2024-11-28 03:53:54,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 348 flow [2024-11-28 03:53:54,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 339 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 03:53:54,764 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 265 flow [2024-11-28 03:53:54,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-11-28 03:53:54,765 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-11-28 03:53:54,765 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 265 flow [2024-11-28 03:53:54,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:54,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:54,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:54,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:53:54,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:53:54,969 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:54,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash -957223464, now seen corresponding path program 1 times [2024-11-28 03:53:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859836309] [2024-11-28 03:53:54,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:53:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859836309] [2024-11-28 03:53:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859836309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:55,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:53:55,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589487217] [2024-11-28 03:53:55,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:55,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:55,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:55,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:55,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-28 03:53:55,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:55,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:55,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-28 03:53:55,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:55,289 INFO L124 PetriNetUnfolderBase]: 254/535 cut-off events. [2024-11-28 03:53:55,289 INFO L125 PetriNetUnfolderBase]: For 625/625 co-relation queries the response was YES. [2024-11-28 03:53:55,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 535 events. 254/535 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2375 event pairs, 197 based on Foata normal form. 8/543 useless extension candidates. Maximal degree in co-relation 1047. Up to 378 conditions per place. [2024-11-28 03:53:55,293 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 57 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-11-28 03:53:55,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 423 flow [2024-11-28 03:53:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-28 03:53:55,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38425925925925924 [2024-11-28 03:53:55,294 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 265 flow. Second operand 4 states and 83 transitions. [2024-11-28 03:53:55,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 423 flow [2024-11-28 03:53:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:53:55,299 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 253 flow [2024-11-28 03:53:55,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-11-28 03:53:55,299 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-11-28 03:53:55,299 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 253 flow [2024-11-28 03:53:55,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:55,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:55,300 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:55,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:53:55,301 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:55,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash 758283548, now seen corresponding path program 1 times [2024-11-28 03:53:55,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:55,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814917940] [2024-11-28 03:53:55,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:55,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:53:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814917940] [2024-11-28 03:53:55,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814917940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:55,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:53:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132665408] [2024-11-28 03:53:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:55,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:55,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:55,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:55,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:55,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:55,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:55,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:55,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:55,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:55,825 INFO L124 PetriNetUnfolderBase]: 193/426 cut-off events. [2024-11-28 03:53:55,825 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-11-28 03:53:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 426 events. 193/426 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1798 event pairs, 146 based on Foata normal form. 34/455 useless extension candidates. Maximal degree in co-relation 862. Up to 375 conditions per place. [2024-11-28 03:53:55,828 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 38 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-28 03:53:55,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 45 transitions, 321 flow [2024-11-28 03:53:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:53:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-28 03:53:55,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25925925925925924 [2024-11-28 03:53:55,830 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 253 flow. Second operand 4 states and 56 transitions. [2024-11-28 03:53:55,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 45 transitions, 321 flow [2024-11-28 03:53:55,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 306 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 03:53:55,832 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 230 flow [2024-11-28 03:53:55,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-28 03:53:55,833 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-11-28 03:53:55,833 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 230 flow [2024-11-28 03:53:55,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:55,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:55,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:55,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:53:55,834 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:55,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1228728262, now seen corresponding path program 1 times [2024-11-28 03:53:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219887135] [2024-11-28 03:53:55,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:55,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:53:55,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:55,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219887135] [2024-11-28 03:53:55,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219887135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:55,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:55,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:53:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293219991] [2024-11-28 03:53:55,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:55,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:53:55,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:55,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:53:55,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:53:55,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-28 03:53:55,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:55,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:55,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-28 03:53:55,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:55,975 INFO L124 PetriNetUnfolderBase]: 193/418 cut-off events. [2024-11-28 03:53:55,975 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-28 03:53:55,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 418 events. 193/418 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1653 event pairs, 81 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 716. Up to 204 conditions per place. [2024-11-28 03:53:55,978 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 42 selfloop transitions, 3 changer transitions 6/54 dead transitions. [2024-11-28 03:53:55,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 353 flow [2024-11-28 03:53:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:53:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:53:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-28 03:53:55,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3950617283950617 [2024-11-28 03:53:55,979 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 230 flow. Second operand 3 states and 64 transitions. [2024-11-28 03:53:55,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 353 flow [2024-11-28 03:53:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:53:55,982 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 190 flow [2024-11-28 03:53:55,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2024-11-28 03:53:55,982 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-11-28 03:53:55,983 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 190 flow [2024-11-28 03:53:55,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:55,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:55,983 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 03:53:55,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:53:55,983 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:55,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash -550237207, now seen corresponding path program 1 times [2024-11-28 03:53:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790908035] [2024-11-28 03:53:55,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:56,083 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 03:53:56,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790908035] [2024-11-28 03:53:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790908035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:56,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:53:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573912241] [2024-11-28 03:53:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:56,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:56,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:56,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:56,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:56,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 03:53:56,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:56,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:56,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:56,262 INFO L124 PetriNetUnfolderBase]: 315/551 cut-off events. [2024-11-28 03:53:56,262 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2024-11-28 03:53:56,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 551 events. 315/551 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2164 event pairs, 124 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 1389. Up to 358 conditions per place. [2024-11-28 03:53:56,266 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 57 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-11-28 03:53:56,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 432 flow [2024-11-28 03:53:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:53:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:53:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-11-28 03:53:56,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-11-28 03:53:56,268 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 190 flow. Second operand 5 states and 92 transitions. [2024-11-28 03:53:56,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 432 flow [2024-11-28 03:53:56,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 392 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-28 03:53:56,272 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 240 flow [2024-11-28 03:53:56,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-28 03:53:56,273 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2024-11-28 03:53:56,273 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 240 flow [2024-11-28 03:53:56,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 03:53:56,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:56,273 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 03:53:56,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:53:56,273 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:56,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1015905912, now seen corresponding path program 1 times [2024-11-28 03:53:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452204877] [2024-11-28 03:53:56,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:56,363 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 03:53:56,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:56,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452204877] [2024-11-28 03:53:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452204877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:56,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:56,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:53:56,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671763554] [2024-11-28 03:53:56,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:56,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:56,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:56,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:56,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:56,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-28 03:53:56,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:56,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:56,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-28 03:53:56,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:56,554 INFO L124 PetriNetUnfolderBase]: 277/510 cut-off events. [2024-11-28 03:53:56,554 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-11-28 03:53:56,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 510 events. 277/510 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2162 event pairs, 84 based on Foata normal form. 3/502 useless extension candidates. Maximal degree in co-relation 1574. Up to 252 conditions per place. [2024-11-28 03:53:56,558 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 59 selfloop transitions, 6 changer transitions 6/74 dead transitions. [2024-11-28 03:53:56,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 480 flow [2024-11-28 03:53:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:53:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:53:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-28 03:53:56,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-11-28 03:53:56,560 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 240 flow. Second operand 5 states and 94 transitions. [2024-11-28 03:53:56,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 480 flow [2024-11-28 03:53:56,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:53:56,563 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 260 flow [2024-11-28 03:53:56,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-11-28 03:53:56,564 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-11-28 03:53:56,564 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 260 flow [2024-11-28 03:53:56,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:56,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:56,565 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 03:53:56,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:53:56,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:56,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:56,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1276092192, now seen corresponding path program 2 times [2024-11-28 03:53:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:56,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122864641] [2024-11-28 03:53:56,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:53:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:56,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:53:56,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:56,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122864641] [2024-11-28 03:53:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122864641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652209577] [2024-11-28 03:53:56,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:53:56,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:56,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:56,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:56,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:53:56,769 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:53:56,769 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:56,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:53:56,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:56,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:56,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652209577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:56,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:56,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 03:53:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292515846] [2024-11-28 03:53:56,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:56,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:53:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:56,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:53:56,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:53:56,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:56,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 260 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:56,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:56,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:56,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:57,289 INFO L124 PetriNetUnfolderBase]: 474/823 cut-off events. [2024-11-28 03:53:57,290 INFO L125 PetriNetUnfolderBase]: For 881/881 co-relation queries the response was YES. [2024-11-28 03:53:57,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 823 events. 474/823 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3487 event pairs, 22 based on Foata normal form. 12/833 useless extension candidates. Maximal degree in co-relation 2801. Up to 207 conditions per place. [2024-11-28 03:53:57,297 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 95 selfloop transitions, 45 changer transitions 1/142 dead transitions. [2024-11-28 03:53:57,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 142 transitions, 995 flow [2024-11-28 03:53:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:53:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:53:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 207 transitions. [2024-11-28 03:53:57,299 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2024-11-28 03:53:57,299 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 260 flow. Second operand 14 states and 207 transitions. [2024-11-28 03:53:57,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 142 transitions, 995 flow [2024-11-28 03:53:57,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 142 transitions, 937 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-28 03:53:57,307 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 592 flow [2024-11-28 03:53:57,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=592, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2024-11-28 03:53:57,308 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-11-28 03:53:57,308 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 592 flow [2024-11-28 03:53:57,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:57,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:57,309 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 03:53:57,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:53:57,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:53:57,510 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:57,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2108727955, now seen corresponding path program 2 times [2024-11-28 03:53:57,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:57,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540975530] [2024-11-28 03:53:57,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:53:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:57,532 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:53:57,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:57,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:57,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540975530] [2024-11-28 03:53:57,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540975530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:57,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973466510] [2024-11-28 03:53:57,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:53:57,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:57,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:57,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:57,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:53:57,744 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:53:57,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:57,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:53:57,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:57,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:57,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973466510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:57,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:57,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 03:53:57,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588931969] [2024-11-28 03:53:57,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:57,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:53:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:57,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:53:57,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:53:57,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:57,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:57,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:57,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:57,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:58,338 INFO L124 PetriNetUnfolderBase]: 537/932 cut-off events. [2024-11-28 03:53:58,338 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2024-11-28 03:53:58,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 932 events. 537/932 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4116 event pairs, 14 based on Foata normal form. 13/943 useless extension candidates. Maximal degree in co-relation 3805. Up to 220 conditions per place. [2024-11-28 03:53:58,348 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 114 selfloop transitions, 72 changer transitions 0/187 dead transitions. [2024-11-28 03:53:58,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 187 transitions, 1562 flow [2024-11-28 03:53:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:53:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:53:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2024-11-28 03:53:58,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28174603174603174 [2024-11-28 03:53:58,351 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 592 flow. Second operand 14 states and 213 transitions. [2024-11-28 03:53:58,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 187 transitions, 1562 flow [2024-11-28 03:53:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 187 transitions, 1530 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-11-28 03:53:58,365 INFO L231 Difference]: Finished difference. Result has 94 places, 126 transitions, 1084 flow [2024-11-28 03:53:58,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1084, PETRI_PLACES=94, PETRI_TRANSITIONS=126} [2024-11-28 03:53:58,365 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-11-28 03:53:58,366 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 126 transitions, 1084 flow [2024-11-28 03:53:58,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:58,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:58,366 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 03:53:58,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:53:58,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:53:58,571 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:58,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1968947394, now seen corresponding path program 3 times [2024-11-28 03:53:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:58,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89040483] [2024-11-28 03:53:58,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:53:58,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:58,589 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:53:58,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:58,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89040483] [2024-11-28 03:53:58,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89040483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497313405] [2024-11-28 03:53:58,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:53:58,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:58,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:58,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:58,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:53:58,774 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:53:58,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:58,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:53:58,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:58,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497313405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:53:58,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:53:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 03:53:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237446995] [2024-11-28 03:53:58,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:53:58,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:53:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:58,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:53:58,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:53:58,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:58,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 126 transitions, 1084 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:58,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:58,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:58,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:59,239 INFO L124 PetriNetUnfolderBase]: 582/1003 cut-off events. [2024-11-28 03:53:59,239 INFO L125 PetriNetUnfolderBase]: For 3346/3346 co-relation queries the response was YES. [2024-11-28 03:53:59,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 1003 events. 582/1003 cut-off events. For 3346/3346 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4490 event pairs, 99 based on Foata normal form. 8/1009 useless extension candidates. Maximal degree in co-relation 4650. Up to 427 conditions per place. [2024-11-28 03:53:59,249 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 116 selfloop transitions, 55 changer transitions 0/172 dead transitions. [2024-11-28 03:53:59,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 172 transitions, 1728 flow [2024-11-28 03:53:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:53:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:53:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-11-28 03:53:59,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32175925925925924 [2024-11-28 03:53:59,252 INFO L175 Difference]: Start difference. First operand has 94 places, 126 transitions, 1084 flow. Second operand 8 states and 139 transitions. [2024-11-28 03:53:59,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 172 transitions, 1728 flow [2024-11-28 03:53:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 1624 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-11-28 03:53:59,273 INFO L231 Difference]: Finished difference. Result has 102 places, 134 transitions, 1209 flow [2024-11-28 03:53:59,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1209, PETRI_PLACES=102, PETRI_TRANSITIONS=134} [2024-11-28 03:53:59,275 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-11-28 03:53:59,275 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 134 transitions, 1209 flow [2024-11-28 03:53:59,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:59,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:59,275 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 03:53:59,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:53:59,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:59,476 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:59,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1483190573, now seen corresponding path program 3 times [2024-11-28 03:53:59,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:59,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537218704] [2024-11-28 03:53:59,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:53:59,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:59,501 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:53:59,501 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:59,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537218704] [2024-11-28 03:53:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537218704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:59,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:53:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31054330] [2024-11-28 03:53:59,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:59,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:59,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:59,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:59,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:59,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-28 03:53:59,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 134 transitions, 1209 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:59,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:59,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-28 03:53:59,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:53:59,845 INFO L124 PetriNetUnfolderBase]: 526/941 cut-off events. [2024-11-28 03:53:59,845 INFO L125 PetriNetUnfolderBase]: For 3669/3670 co-relation queries the response was YES. [2024-11-28 03:53:59,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 941 events. 526/941 cut-off events. For 3669/3670 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4397 event pairs, 112 based on Foata normal form. 2/921 useless extension candidates. Maximal degree in co-relation 4485. Up to 540 conditions per place. [2024-11-28 03:53:59,854 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 116 selfloop transitions, 23 changer transitions 4/160 dead transitions. [2024-11-28 03:53:59,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 160 transitions, 1683 flow [2024-11-28 03:53:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:53:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:53:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-11-28 03:53:59,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-28 03:53:59,855 INFO L175 Difference]: Start difference. First operand has 102 places, 134 transitions, 1209 flow. Second operand 5 states and 90 transitions. [2024-11-28 03:53:59,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 160 transitions, 1683 flow [2024-11-28 03:53:59,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 160 transitions, 1571 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-28 03:53:59,873 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 1168 flow [2024-11-28 03:53:59,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1168, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2024-11-28 03:53:59,874 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-11-28 03:53:59,874 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 1168 flow [2024-11-28 03:53:59,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:53:59,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:53:59,874 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 03:53:59,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:53:59,875 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:53:59,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 917803996, now seen corresponding path program 4 times [2024-11-28 03:53:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:59,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47895035] [2024-11-28 03:53:59,876 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:53:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:59,891 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:53:59,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:53:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:53:59,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47895035] [2024-11-28 03:53:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47895035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:59,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:59,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:53:59,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523675693] [2024-11-28 03:53:59,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:59,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:53:59,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:59,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:53:59,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:59,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:53:59,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 134 transitions, 1168 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 03:53:59,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:53:59,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:53:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:00,207 INFO L124 PetriNetUnfolderBase]: 582/1006 cut-off events. [2024-11-28 03:54:00,207 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2024-11-28 03:54:00,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 1006 events. 582/1006 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4502 event pairs, 147 based on Foata normal form. 3/1007 useless extension candidates. Maximal degree in co-relation 4661. Up to 616 conditions per place. [2024-11-28 03:54:00,217 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 124 selfloop transitions, 29 changer transitions 4/158 dead transitions. [2024-11-28 03:54:00,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 158 transitions, 1650 flow [2024-11-28 03:54:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:54:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:54:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-28 03:54:00,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-11-28 03:54:00,218 INFO L175 Difference]: Start difference. First operand has 104 places, 134 transitions, 1168 flow. Second operand 5 states and 89 transitions. [2024-11-28 03:54:00,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 158 transitions, 1650 flow [2024-11-28 03:54:00,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 1569 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-28 03:54:00,236 INFO L231 Difference]: Finished difference. Result has 104 places, 133 transitions, 1142 flow [2024-11-28 03:54:00,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1142, PETRI_PLACES=104, PETRI_TRANSITIONS=133} [2024-11-28 03:54:00,237 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-11-28 03:54:00,237 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 133 transitions, 1142 flow [2024-11-28 03:54:00,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 03:54:00,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:00,237 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 03:54:00,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:54:00,238 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1050001391, now seen corresponding path program 4 times [2024-11-28 03:54:00,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685846050] [2024-11-28 03:54:00,238 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:54:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:00,250 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:54:00,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685846050] [2024-11-28 03:54:00,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685846050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:00,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:00,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:54:00,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784049811] [2024-11-28 03:54:00,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:00,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:54:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:00,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:54:00,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:54:00,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:00,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 133 transitions, 1142 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 03:54:00,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:00,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:00,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:00,556 INFO L124 PetriNetUnfolderBase]: 632/1085 cut-off events. [2024-11-28 03:54:00,556 INFO L125 PetriNetUnfolderBase]: For 3201/3201 co-relation queries the response was YES. [2024-11-28 03:54:00,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1085 events. 632/1085 cut-off events. For 3201/3201 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4960 event pairs, 76 based on Foata normal form. 4/1087 useless extension candidates. Maximal degree in co-relation 4896. Up to 624 conditions per place. [2024-11-28 03:54:00,565 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 136 selfloop transitions, 27 changer transitions 2/166 dead transitions. [2024-11-28 03:54:00,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 166 transitions, 1700 flow [2024-11-28 03:54:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:54:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:54:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-11-28 03:54:00,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-11-28 03:54:00,567 INFO L175 Difference]: Start difference. First operand has 104 places, 133 transitions, 1142 flow. Second operand 5 states and 86 transitions. [2024-11-28 03:54:00,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 166 transitions, 1700 flow [2024-11-28 03:54:00,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 166 transitions, 1632 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 03:54:00,584 INFO L231 Difference]: Finished difference. Result has 105 places, 139 transitions, 1205 flow [2024-11-28 03:54:00,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1205, PETRI_PLACES=105, PETRI_TRANSITIONS=139} [2024-11-28 03:54:00,585 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-11-28 03:54:00,585 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 139 transitions, 1205 flow [2024-11-28 03:54:00,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 03:54:00,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:00,586 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 03:54:00,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:54:00,586 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:00,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1576151183, now seen corresponding path program 5 times [2024-11-28 03:54:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420457912] [2024-11-28 03:54:00,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:54:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:00,604 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:54:00,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:54:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420457912] [2024-11-28 03:54:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420457912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654950446] [2024-11-28 03:54:00,764 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:54:00,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:00,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:54:00,872 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:54:00,873 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:00,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:54:00,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:00,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654950446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:00,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 03:54:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860431367] [2024-11-28 03:54:00,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:00,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:54:00,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:00,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:54:00,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:54:01,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:01,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 139 transitions, 1205 flow. Second operand has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:01,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:01,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:01,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:02,459 INFO L124 PetriNetUnfolderBase]: 1275/2191 cut-off events. [2024-11-28 03:54:02,459 INFO L125 PetriNetUnfolderBase]: For 6481/6481 co-relation queries the response was YES. [2024-11-28 03:54:02,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 2191 events. 1275/2191 cut-off events. For 6481/6481 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11677 event pairs, 38 based on Foata normal form. 20/2209 useless extension candidates. Maximal degree in co-relation 9998. Up to 395 conditions per place. [2024-11-28 03:54:02,483 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 277 selfloop transitions, 211 changer transitions 11/500 dead transitions. [2024-11-28 03:54:02,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 500 transitions, 4929 flow [2024-11-28 03:54:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:54:02,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-28 03:54:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 589 transitions. [2024-11-28 03:54:02,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2660343270099368 [2024-11-28 03:54:02,486 INFO L175 Difference]: Start difference. First operand has 105 places, 139 transitions, 1205 flow. Second operand 41 states and 589 transitions. [2024-11-28 03:54:02,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 500 transitions, 4929 flow [2024-11-28 03:54:02,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 500 transitions, 4820 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-28 03:54:02,534 INFO L231 Difference]: Finished difference. Result has 162 places, 295 transitions, 3260 flow [2024-11-28 03:54:02,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3260, PETRI_PLACES=162, PETRI_TRANSITIONS=295} [2024-11-28 03:54:02,535 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-11-28 03:54:02,536 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 295 transitions, 3260 flow [2024-11-28 03:54:02,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.181818181818182) internal successors, (134), 11 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:02,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:02,537 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 03:54:02,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:54:02,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:54:02,741 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:02,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1679957920, now seen corresponding path program 5 times [2024-11-28 03:54:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:02,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615757977] [2024-11-28 03:54:02,742 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:54:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:02,765 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:54:02,765 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615757977] [2024-11-28 03:54:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615757977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:54:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987403963] [2024-11-28 03:54:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:02,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:54:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:02,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:54:02,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:54:02,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-28 03:54:02,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 295 transitions, 3260 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:02,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:02,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-28 03:54:02,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:03,428 INFO L124 PetriNetUnfolderBase]: 1182/2090 cut-off events. [2024-11-28 03:54:03,428 INFO L125 PetriNetUnfolderBase]: For 10793/10805 co-relation queries the response was YES. [2024-11-28 03:54:03,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11368 conditions, 2090 events. 1182/2090 cut-off events. For 10793/10805 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11566 event pairs, 114 based on Foata normal form. 14/2103 useless extension candidates. Maximal degree in co-relation 11286. Up to 1198 conditions per place. [2024-11-28 03:54:03,450 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 263 selfloop transitions, 46 changer transitions 6/345 dead transitions. [2024-11-28 03:54:03,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 345 transitions, 4391 flow [2024-11-28 03:54:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:54:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:54:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-28 03:54:03,452 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-11-28 03:54:03,452 INFO L175 Difference]: Start difference. First operand has 162 places, 295 transitions, 3260 flow. Second operand 5 states and 88 transitions. [2024-11-28 03:54:03,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 345 transitions, 4391 flow [2024-11-28 03:54:03,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 345 transitions, 4185 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-11-28 03:54:03,562 INFO L231 Difference]: Finished difference. Result has 165 places, 300 transitions, 3286 flow [2024-11-28 03:54:03,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3286, PETRI_PLACES=165, PETRI_TRANSITIONS=300} [2024-11-28 03:54:03,563 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-11-28 03:54:03,563 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 300 transitions, 3286 flow [2024-11-28 03:54:03,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:03,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:03,564 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 03:54:03,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:54:03,564 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:03,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:03,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1278195422, now seen corresponding path program 6 times [2024-11-28 03:54:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:03,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079807154] [2024-11-28 03:54:03,565 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:54:03,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:03,582 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:54:03,582 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:03,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079807154] [2024-11-28 03:54:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079807154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417458175] [2024-11-28 03:54:03,656 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:54:03,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:03,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:03,658 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:03,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:54:03,765 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:54:03,765 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:03,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:54:03,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:03,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:03,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417458175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:03,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 03:54:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386334994] [2024-11-28 03:54:03,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:03,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:54:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:03,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:54:03,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:54:03,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:03,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 300 transitions, 3286 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:03,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:03,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:03,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:04,782 INFO L124 PetriNetUnfolderBase]: 1340/2294 cut-off events. [2024-11-28 03:54:04,783 INFO L125 PetriNetUnfolderBase]: For 10668/10668 co-relation queries the response was YES. [2024-11-28 03:54:04,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12476 conditions, 2294 events. 1340/2294 cut-off events. For 10668/10668 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12386 event pairs, 62 based on Foata normal form. 28/2322 useless extension candidates. Maximal degree in co-relation 12393. Up to 421 conditions per place. [2024-11-28 03:54:04,810 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 267 selfloop transitions, 146 changer transitions 1/415 dead transitions. [2024-11-28 03:54:04,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 415 transitions, 4971 flow [2024-11-28 03:54:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:54:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 03:54:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 230 transitions. [2024-11-28 03:54:04,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2839506172839506 [2024-11-28 03:54:04,813 INFO L175 Difference]: Start difference. First operand has 165 places, 300 transitions, 3286 flow. Second operand 15 states and 230 transitions. [2024-11-28 03:54:04,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 415 transitions, 4971 flow [2024-11-28 03:54:04,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 415 transitions, 4821 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-11-28 03:54:04,931 INFO L231 Difference]: Finished difference. Result has 173 places, 308 transitions, 3504 flow [2024-11-28 03:54:04,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3504, PETRI_PLACES=173, PETRI_TRANSITIONS=308} [2024-11-28 03:54:04,932 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-11-28 03:54:04,932 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 308 transitions, 3504 flow [2024-11-28 03:54:04,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:04,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:04,933 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:04,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:54:05,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:05,133 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:05,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2073306059, now seen corresponding path program 6 times [2024-11-28 03:54:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518331142] [2024-11-28 03:54:05,134 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:54:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:05,164 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:54:05,164 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:54:05,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:05,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518331142] [2024-11-28 03:54:05,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518331142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:05,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:05,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:54:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11864349] [2024-11-28 03:54:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:05,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:54:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:05,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:54:05,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:54:05,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-11-28 03:54:05,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 308 transitions, 3504 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:05,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:05,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-11-28 03:54:05,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:05,816 INFO L124 PetriNetUnfolderBase]: 1221/2145 cut-off events. [2024-11-28 03:54:05,817 INFO L125 PetriNetUnfolderBase]: For 12240/12258 co-relation queries the response was YES. [2024-11-28 03:54:05,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12058 conditions, 2145 events. 1221/2145 cut-off events. For 12240/12258 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11933 event pairs, 250 based on Foata normal form. 4/2119 useless extension candidates. Maximal degree in co-relation 11979. Up to 1252 conditions per place. [2024-11-28 03:54:05,846 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 200 selfloop transitions, 74 changer transitions 2/328 dead transitions. [2024-11-28 03:54:05,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 328 transitions, 4199 flow [2024-11-28 03:54:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:54:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:54:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-28 03:54:05,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-11-28 03:54:05,847 INFO L175 Difference]: Start difference. First operand has 173 places, 308 transitions, 3504 flow. Second operand 5 states and 87 transitions. [2024-11-28 03:54:05,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 328 transitions, 4199 flow [2024-11-28 03:54:05,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 328 transitions, 4076 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-28 03:54:05,927 INFO L231 Difference]: Finished difference. Result has 175 places, 307 transitions, 3521 flow [2024-11-28 03:54:05,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3381, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3521, PETRI_PLACES=175, PETRI_TRANSITIONS=307} [2024-11-28 03:54:05,928 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-11-28 03:54:05,928 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 307 transitions, 3521 flow [2024-11-28 03:54:05,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:05,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:05,928 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:05,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 03:54:05,929 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:05,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 818291849, now seen corresponding path program 7 times [2024-11-28 03:54:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245336122] [2024-11-28 03:54:05,929 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:54:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:54:06,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245336122] [2024-11-28 03:54:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245336122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:06,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707999064] [2024-11-28 03:54:06,021 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:54:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:06,024 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:06,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:54:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:06,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:54:06,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:54:06,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:54:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707999064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:06,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-28 03:54:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834380605] [2024-11-28 03:54:06,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:06,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:54:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:06,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:54:06,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:54:06,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:06,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 307 transitions, 3521 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:06,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:06,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:06,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:06,947 INFO L124 PetriNetUnfolderBase]: 1304/2224 cut-off events. [2024-11-28 03:54:06,947 INFO L125 PetriNetUnfolderBase]: For 11868/11868 co-relation queries the response was YES. [2024-11-28 03:54:06,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12438 conditions, 2224 events. 1304/2224 cut-off events. For 11868/11868 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11807 event pairs, 188 based on Foata normal form. 18/2242 useless extension candidates. Maximal degree in co-relation 12358. Up to 849 conditions per place. [2024-11-28 03:54:06,977 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 214 selfloop transitions, 130 changer transitions 1/346 dead transitions. [2024-11-28 03:54:06,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 346 transitions, 4514 flow [2024-11-28 03:54:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:54:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 03:54:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-11-28 03:54:06,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3101851851851852 [2024-11-28 03:54:06,979 INFO L175 Difference]: Start difference. First operand has 175 places, 307 transitions, 3521 flow. Second operand 8 states and 134 transitions. [2024-11-28 03:54:06,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 346 transitions, 4514 flow [2024-11-28 03:54:07,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 346 transitions, 4360 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 03:54:07,082 INFO L231 Difference]: Finished difference. Result has 178 places, 310 transitions, 3654 flow [2024-11-28 03:54:07,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3654, PETRI_PLACES=178, PETRI_TRANSITIONS=310} [2024-11-28 03:54:07,083 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-11-28 03:54:07,083 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 310 transitions, 3654 flow [2024-11-28 03:54:07,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:07,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:07,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:07,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:54:07,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:07,284 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:07,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash -867461159, now seen corresponding path program 1 times [2024-11-28 03:54:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:07,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486831281] [2024-11-28 03:54:07,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:54:07,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486831281] [2024-11-28 03:54:07,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486831281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:07,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647057466] [2024-11-28 03:54:07,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:07,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:07,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:07,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:54:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:07,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:54:07,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:54:07,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:07,807 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 51 treesize of output 19 [2024-11-28 03:54:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:54:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647057466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:07,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-28 03:54:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628749771] [2024-11-28 03:54:07,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:07,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:54:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:07,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:54:07,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:54:08,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-11-28 03:54:08,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 310 transitions, 3654 flow. Second operand has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 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 03:54:08,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:08,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-11-28 03:54:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:09,092 INFO L124 PetriNetUnfolderBase]: 2703/4863 cut-off events. [2024-11-28 03:54:09,093 INFO L125 PetriNetUnfolderBase]: For 29266/29373 co-relation queries the response was YES. [2024-11-28 03:54:09,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27774 conditions, 4863 events. 2703/4863 cut-off events. For 29266/29373 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 31838 event pairs, 291 based on Foata normal form. 32/4866 useless extension candidates. Maximal degree in co-relation 27424. Up to 1528 conditions per place. [2024-11-28 03:54:09,144 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 520 selfloop transitions, 82 changer transitions 53/739 dead transitions. [2024-11-28 03:54:09,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 739 transitions, 9786 flow [2024-11-28 03:54:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:54:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 03:54:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-11-28 03:54:09,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.360082304526749 [2024-11-28 03:54:09,146 INFO L175 Difference]: Start difference. First operand has 178 places, 310 transitions, 3654 flow. Second operand 9 states and 175 transitions. [2024-11-28 03:54:09,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 739 transitions, 9786 flow [2024-11-28 03:54:09,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 739 transitions, 8878 flow, removed 71 selfloop flow, removed 14 redundant places. [2024-11-28 03:54:09,478 INFO L231 Difference]: Finished difference. Result has 176 places, 376 transitions, 4196 flow [2024-11-28 03:54:09,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4196, PETRI_PLACES=176, PETRI_TRANSITIONS=376} [2024-11-28 03:54:09,483 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-11-28 03:54:09,483 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 376 transitions, 4196 flow [2024-11-28 03:54:09,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 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 03:54:09,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:09,483 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:09,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:54:09,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:54:09,684 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:09,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1884139512, now seen corresponding path program 2 times [2024-11-28 03:54:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:09,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047840444] [2024-11-28 03:54:09,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:54:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:09,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:54:09,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:09,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:09,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047840444] [2024-11-28 03:54:09,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047840444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:09,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729189907] [2024-11-28 03:54:09,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:54:09,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:09,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:09,814 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:09,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:54:09,940 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:54:09,941 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:09,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:54:09,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:10,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729189907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:10,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:54:10,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114145597] [2024-11-28 03:54:10,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:10,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:54:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:10,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:54:10,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:54:10,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:10,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 376 transitions, 4196 flow. Second operand has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:10,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:10,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:10,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:12,149 INFO L124 PetriNetUnfolderBase]: 5441/9097 cut-off events. [2024-11-28 03:54:12,149 INFO L125 PetriNetUnfolderBase]: For 46011/46011 co-relation queries the response was YES. [2024-11-28 03:54:12,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49751 conditions, 9097 events. 5441/9097 cut-off events. For 46011/46011 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 58500 event pairs, 217 based on Foata normal form. 324/9421 useless extension candidates. Maximal degree in co-relation 48525. Up to 1650 conditions per place. [2024-11-28 03:54:12,235 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 478 selfloop transitions, 335 changer transitions 0/814 dead transitions. [2024-11-28 03:54:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 814 transitions, 10328 flow [2024-11-28 03:54:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:54:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-28 03:54:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 434 transitions. [2024-11-28 03:54:12,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2771392081736909 [2024-11-28 03:54:12,238 INFO L175 Difference]: Start difference. First operand has 176 places, 376 transitions, 4196 flow. Second operand 29 states and 434 transitions. [2024-11-28 03:54:12,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 814 transitions, 10328 flow [2024-11-28 03:54:12,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 814 transitions, 10269 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-28 03:54:12,713 INFO L231 Difference]: Finished difference. Result has 219 places, 531 transitions, 6902 flow [2024-11-28 03:54:12,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6902, PETRI_PLACES=219, PETRI_TRANSITIONS=531} [2024-11-28 03:54:12,714 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-11-28 03:54:12,714 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 531 transitions, 6902 flow [2024-11-28 03:54:12,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:12,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:12,715 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:12,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:54:12,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:54:12,915 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:12,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2011002157, now seen corresponding path program 3 times [2024-11-28 03:54:12,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:12,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482822632] [2024-11-28 03:54:12,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:54:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:12,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:54:12,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482822632] [2024-11-28 03:54:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482822632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95032969] [2024-11-28 03:54:13,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:54:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:13,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:13,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:13,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:54:13,201 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:54:13,201 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:13,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:54:13,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:13,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95032969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:13,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:13,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:54:13,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110252562] [2024-11-28 03:54:13,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:13,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:54:13,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:13,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:54:13,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:54:13,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:13,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 531 transitions, 6902 flow. Second operand has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:13,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:13,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:13,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:15,914 INFO L124 PetriNetUnfolderBase]: 6561/10865 cut-off events. [2024-11-28 03:54:15,914 INFO L125 PetriNetUnfolderBase]: For 103461/103461 co-relation queries the response was YES. [2024-11-28 03:54:15,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70721 conditions, 10865 events. 6561/10865 cut-off events. For 103461/103461 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 71636 event pairs, 903 based on Foata normal form. 184/11049 useless extension candidates. Maximal degree in co-relation 69251. Up to 4391 conditions per place. [2024-11-28 03:54:16,001 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 654 selfloop transitions, 156 changer transitions 0/811 dead transitions. [2024-11-28 03:54:16,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 811 transitions, 11865 flow [2024-11-28 03:54:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:54:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 03:54:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 312 transitions. [2024-11-28 03:54:16,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28888888888888886 [2024-11-28 03:54:16,002 INFO L175 Difference]: Start difference. First operand has 219 places, 531 transitions, 6902 flow. Second operand 20 states and 312 transitions. [2024-11-28 03:54:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 811 transitions, 11865 flow [2024-11-28 03:54:17,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 811 transitions, 11722 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-11-28 03:54:17,163 INFO L231 Difference]: Finished difference. Result has 249 places, 582 transitions, 8220 flow [2024-11-28 03:54:17,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6759, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8220, PETRI_PLACES=249, PETRI_TRANSITIONS=582} [2024-11-28 03:54:17,164 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-11-28 03:54:17,164 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 582 transitions, 8220 flow [2024-11-28 03:54:17,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:17,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:17,165 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:17,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:54:17,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:17,365 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:17,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:17,366 INFO L85 PathProgramCache]: Analyzing trace with hash 335855488, now seen corresponding path program 4 times [2024-11-28 03:54:17,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:17,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123234409] [2024-11-28 03:54:17,366 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:54:17,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:17,382 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:54:17,382 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123234409] [2024-11-28 03:54:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123234409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302659655] [2024-11-28 03:54:17,441 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:54:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:17,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:17,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:17,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:54:17,563 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:54:17,563 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:17,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:54:17,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:17,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302659655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:17,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:17,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-11-28 03:54:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794830241] [2024-11-28 03:54:17,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:17,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:54:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:17,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:54:17,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:54:17,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:17,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 582 transitions, 8220 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:17,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:17,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:17,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:22,065 INFO L124 PetriNetUnfolderBase]: 9468/15391 cut-off events. [2024-11-28 03:54:22,066 INFO L125 PetriNetUnfolderBase]: For 223668/223668 co-relation queries the response was YES. [2024-11-28 03:54:22,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112597 conditions, 15391 events. 9468/15391 cut-off events. For 223668/223668 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 102199 event pairs, 364 based on Foata normal form. 174/15565 useless extension candidates. Maximal degree in co-relation 111105. Up to 3366 conditions per place. [2024-11-28 03:54:22,232 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 482 selfloop transitions, 494 changer transitions 0/977 dead transitions. [2024-11-28 03:54:22,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 977 transitions, 15857 flow [2024-11-28 03:54:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:54:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 03:54:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 301 transitions. [2024-11-28 03:54:22,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27870370370370373 [2024-11-28 03:54:22,234 INFO L175 Difference]: Start difference. First operand has 249 places, 582 transitions, 8220 flow. Second operand 20 states and 301 transitions. [2024-11-28 03:54:22,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 977 transitions, 15857 flow [2024-11-28 03:54:25,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 977 transitions, 15293 flow, removed 221 selfloop flow, removed 6 redundant places. [2024-11-28 03:54:25,443 INFO L231 Difference]: Finished difference. Result has 272 places, 749 transitions, 12253 flow [2024-11-28 03:54:25,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7854, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=12253, PETRI_PLACES=272, PETRI_TRANSITIONS=749} [2024-11-28 03:54:25,444 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 218 predicate places. [2024-11-28 03:54:25,444 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 749 transitions, 12253 flow [2024-11-28 03:54:25,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:25,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:25,445 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:25,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:54:25,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:25,646 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:25,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash -702044130, now seen corresponding path program 5 times [2024-11-28 03:54:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:25,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805526313] [2024-11-28 03:54:25,646 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:54:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:25,674 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:54:25,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:54:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:25,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805526313] [2024-11-28 03:54:25,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805526313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:25,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061251747] [2024-11-28 03:54:25,919 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:54:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:25,921 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:25,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:54:26,082 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:54:26,082 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:26,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:54:26,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:26,183 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:54:26,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061251747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:26,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:54:26,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 03:54:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782902433] [2024-11-28 03:54:26,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:26,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:54:26,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:26,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:54:26,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:54:26,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:26,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 749 transitions, 12253 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:26,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:26,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:26,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:31,231 INFO L124 PetriNetUnfolderBase]: 9480/15427 cut-off events. [2024-11-28 03:54:31,231 INFO L125 PetriNetUnfolderBase]: For 251404/251404 co-relation queries the response was YES. [2024-11-28 03:54:31,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121777 conditions, 15427 events. 9480/15427 cut-off events. For 251404/251404 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 103124 event pairs, 963 based on Foata normal form. 24/15451 useless extension candidates. Maximal degree in co-relation 120053. Up to 9080 conditions per place. [2024-11-28 03:54:31,454 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 581 selfloop transitions, 240 changer transitions 1/823 dead transitions. [2024-11-28 03:54:31,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 823 transitions, 14860 flow [2024-11-28 03:54:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:54:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:54:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-11-28 03:54:31,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30687830687830686 [2024-11-28 03:54:31,456 INFO L175 Difference]: Start difference. First operand has 272 places, 749 transitions, 12253 flow. Second operand 7 states and 116 transitions. [2024-11-28 03:54:31,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 823 transitions, 14860 flow [2024-11-28 03:54:35,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 823 transitions, 14045 flow, removed 288 selfloop flow, removed 10 redundant places. [2024-11-28 03:54:35,798 INFO L231 Difference]: Finished difference. Result has 269 places, 751 transitions, 11998 flow [2024-11-28 03:54:35,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11447, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11998, PETRI_PLACES=269, PETRI_TRANSITIONS=751} [2024-11-28 03:54:35,800 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-11-28 03:54:35,800 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 751 transitions, 11998 flow [2024-11-28 03:54:35,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:35,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:35,800 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:35,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:54:36,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:36,001 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:36,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1912316998, now seen corresponding path program 6 times [2024-11-28 03:54:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265944501] [2024-11-28 03:54:36,002 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:54:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:36,048 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 03:54:36,048 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:36,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:36,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265944501] [2024-11-28 03:54:36,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265944501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:36,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:54:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508630169] [2024-11-28 03:54:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:36,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:54:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:36,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:54:36,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:54:36,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:36,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 751 transitions, 11998 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:36,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:36,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:36,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:41,516 INFO L124 PetriNetUnfolderBase]: 9480/15439 cut-off events. [2024-11-28 03:54:41,517 INFO L125 PetriNetUnfolderBase]: For 225188/225188 co-relation queries the response was YES. [2024-11-28 03:54:41,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118363 conditions, 15439 events. 9480/15439 cut-off events. For 225188/225188 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 103048 event pairs, 2991 based on Foata normal form. 12/15451 useless extension candidates. Maximal degree in co-relation 117250. Up to 13675 conditions per place. [2024-11-28 03:54:41,725 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 731 selfloop transitions, 54 changer transitions 11/797 dead transitions. [2024-11-28 03:54:41,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 797 transitions, 14088 flow [2024-11-28 03:54:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:54:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 03:54:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-11-28 03:54:41,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29894179894179895 [2024-11-28 03:54:41,726 INFO L175 Difference]: Start difference. First operand has 269 places, 751 transitions, 11998 flow. Second operand 7 states and 113 transitions. [2024-11-28 03:54:41,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 797 transitions, 14088 flow [2024-11-28 03:54:45,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 797 transitions, 13768 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-11-28 03:54:45,155 INFO L231 Difference]: Finished difference. Result has 273 places, 748 transitions, 11754 flow [2024-11-28 03:54:45,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11681, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11754, PETRI_PLACES=273, PETRI_TRANSITIONS=748} [2024-11-28 03:54:45,156 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-11-28 03:54:45,156 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 748 transitions, 11754 flow [2024-11-28 03:54:45,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:45,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:45,156 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:45,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 03:54:45,157 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:45,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 361563556, now seen corresponding path program 7 times [2024-11-28 03:54:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301494383] [2024-11-28 03:54:45,158 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:54:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:45,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301494383] [2024-11-28 03:54:45,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301494383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353561674] [2024-11-28 03:54:45,272 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:54:45,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:45,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:45,275 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:45,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:54:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:45,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:54:45,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:45,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:45,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353561674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:45,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:45,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-28 03:54:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690582738] [2024-11-28 03:54:45,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:45,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:54:45,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:45,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:54:45,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:54:45,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:45,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 748 transitions, 11754 flow. Second operand has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 13 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:45,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:45,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:45,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:54:50,581 INFO L124 PetriNetUnfolderBase]: 9468/15443 cut-off events. [2024-11-28 03:54:50,581 INFO L125 PetriNetUnfolderBase]: For 227191/227191 co-relation queries the response was YES. [2024-11-28 03:54:50,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117610 conditions, 15443 events. 9468/15443 cut-off events. For 227191/227191 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 103531 event pairs, 768 based on Foata normal form. 48/15491 useless extension candidates. Maximal degree in co-relation 116830. Up to 3168 conditions per place. [2024-11-28 03:54:50,836 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 615 selfloop transitions, 325 changer transitions 3/944 dead transitions. [2024-11-28 03:54:50,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 944 transitions, 16040 flow [2024-11-28 03:54:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:54:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 03:54:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 227 transitions. [2024-11-28 03:54:50,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3002645502645503 [2024-11-28 03:54:50,838 INFO L175 Difference]: Start difference. First operand has 273 places, 748 transitions, 11754 flow. Second operand 14 states and 227 transitions. [2024-11-28 03:54:50,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 944 transitions, 16040 flow [2024-11-28 03:54:54,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 944 transitions, 15963 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-28 03:54:54,601 INFO L231 Difference]: Finished difference. Result has 283 places, 751 transitions, 12475 flow [2024-11-28 03:54:54,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11689, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12475, PETRI_PLACES=283, PETRI_TRANSITIONS=751} [2024-11-28 03:54:54,602 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2024-11-28 03:54:54,602 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 751 transitions, 12475 flow [2024-11-28 03:54:54,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 13 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:54,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:54:54,602 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:54:54,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:54:54,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:54,803 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:54:54,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1589049750, now seen corresponding path program 8 times [2024-11-28 03:54:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:54,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505665030] [2024-11-28 03:54:54,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:54:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:54,831 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:54:54,831 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505665030] [2024-11-28 03:54:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505665030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613615989] [2024-11-28 03:54:54,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:54:54,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:54,982 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:54,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:54:55,151 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:54:55,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:54:55,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:54:55,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:55,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:54:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613615989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:54:55,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:54:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 03:54:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470173562] [2024-11-28 03:54:55,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:55,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:54:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:55,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:54:55,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:54:55,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:54:55,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 751 transitions, 12475 flow. Second operand has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:54:55,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:54:55,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:54:55,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:55:03,226 INFO L124 PetriNetUnfolderBase]: 11156/18181 cut-off events. [2024-11-28 03:55:03,226 INFO L125 PetriNetUnfolderBase]: For 327560/327560 co-relation queries the response was YES. [2024-11-28 03:55:03,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145453 conditions, 18181 events. 11156/18181 cut-off events. For 327560/327560 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 125115 event pairs, 1306 based on Foata normal form. 324/18505 useless extension candidates. Maximal degree in co-relation 144500. Up to 6897 conditions per place. [2024-11-28 03:55:03,605 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 697 selfloop transitions, 391 changer transitions 0/1089 dead transitions. [2024-11-28 03:55:03,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1089 transitions, 19747 flow [2024-11-28 03:55:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:55:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 03:55:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 313 transitions. [2024-11-28 03:55:03,607 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2898148148148148 [2024-11-28 03:55:03,607 INFO L175 Difference]: Start difference. First operand has 283 places, 751 transitions, 12475 flow. Second operand 20 states and 313 transitions. [2024-11-28 03:55:03,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1089 transitions, 19747 flow [2024-11-28 03:55:08,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1089 transitions, 19044 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-11-28 03:55:08,885 INFO L231 Difference]: Finished difference. Result has 305 places, 844 transitions, 15325 flow [2024-11-28 03:55:08,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11827, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=15325, PETRI_PLACES=305, PETRI_TRANSITIONS=844} [2024-11-28 03:55:08,886 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 251 predicate places. [2024-11-28 03:55:08,886 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 844 transitions, 15325 flow [2024-11-28 03:55:08,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.266666666666667) internal successors, (169), 15 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:55:08,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:55:08,887 INFO L206 CegarLoopForPetriNet]: trace histogram [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 03:55:08,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:55:09,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:09,088 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2024-11-28 03:55:09,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash -22165792, now seen corresponding path program 9 times [2024-11-28 03:55:09,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:09,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743924818] [2024-11-28 03:55:09,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:55:09,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:09,107 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:55:09,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:55:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:55:09,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743924818] [2024-11-28 03:55:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743924818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:55:09,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952971949] [2024-11-28 03:55:09,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:55:09,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:09,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:09,405 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:09,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca1b1207-85c7-463c-9666-ffc356d883ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:55:09,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 03:55:09,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:55:09,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:55:09,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:55:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:55:09,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:55:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:55:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952971949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:55:09,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:55:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2024-11-28 03:55:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431596124] [2024-11-28 03:55:09,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:55:09,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:55:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:09,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:55:09,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:55:09,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 54 [2024-11-28 03:55:09,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 844 transitions, 15325 flow. Second operand has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:55:09,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:55:09,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 54 [2024-11-28 03:55:09,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:55:23,722 INFO L124 PetriNetUnfolderBase]: 19267/31087 cut-off events. [2024-11-28 03:55:23,722 INFO L125 PetriNetUnfolderBase]: For 781736/781736 co-relation queries the response was YES. [2024-11-28 03:55:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272366 conditions, 31087 events. 19267/31087 cut-off events. For 781736/781736 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 228747 event pairs, 856 based on Foata normal form. 171/31258 useless extension candidates. Maximal degree in co-relation 270892. Up to 6085 conditions per place. [2024-11-28 03:55:24,562 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 988 selfloop transitions, 1022 changer transitions 141/2152 dead transitions. [2024-11-28 03:55:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 2152 transitions, 43412 flow [2024-11-28 03:55:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 03:55:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2024-11-28 03:55:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 910 transitions. [2024-11-28 03:55:24,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27180406212664276 [2024-11-28 03:55:24,566 INFO L175 Difference]: Start difference. First operand has 305 places, 844 transitions, 15325 flow. Second operand 62 states and 910 transitions. [2024-11-28 03:55:24,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 2152 transitions, 43412 flow [2024-11-28 03:55:40,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 2152 transitions, 41330 flow, removed 909 selfloop flow, removed 5 redundant places.