./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.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_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/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_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/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_854ed192-6fd9-46cf-a7d2-2479450eb407/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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:05:43,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:05:43,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:05:43,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:05:43,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:05:43,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:05:43,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:05:43,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:05:43,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:05:43,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:05:43,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:05:43,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:05:43,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:05:43,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:05:43,562 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:05:43,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:05:43,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:05:43,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:05:43,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:05:43,564 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:05:43,565 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:05:43,565 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:05:43,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:05:43,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:05:43,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:05:43,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:43,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:05:43,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:43,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:05:43,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:05:43,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:05:43,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:05:43,568 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_854ed192-6fd9-46cf-a7d2-2479450eb407/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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-27 20:05:43,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:05:43,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:05:43,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:05:43,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:05:43,939 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:05:43,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-27 20:05:47,131 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/data/ffda35bc9/af9f78dd49f043f3ac0a8d2205b28684/FLAG7267b62f9 [2024-11-27 20:05:47,438 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:05:47,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-27 20:05:47,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/data/ffda35bc9/af9f78dd49f043f3ac0a8d2205b28684/FLAG7267b62f9 [2024-11-27 20:05:47,478 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/data/ffda35bc9/af9f78dd49f043f3ac0a8d2205b28684 [2024-11-27 20:05:47,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:05:47,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:05:47,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:05:47,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:05:47,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:05:47,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290b3e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47, skipping insertion in model container [2024-11-27 20:05:47,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,519 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:05:47,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:05:47,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:05:47,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:05:47,822 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:05:47,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47 WrapperNode [2024-11-27 20:05:47,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:05:47,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:05:47,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:05:47,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:05:47,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,871 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-11-27 20:05:47,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:05:47,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:05:47,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:05:47,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:05:47,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,913 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:05:47,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:05:47,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:05:47,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:05:47,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:05:47,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (1/1) ... [2024-11-27 20:05:47,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:47,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:47,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:05:47,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:05:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:05:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:05:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:05:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:05:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:05:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:05:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:05:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:05:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:05:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:05:48,035 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:05:48,137 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:05:48,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:05:48,431 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:05:48,432 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:05:48,698 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:05:48,698 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:05:48,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:05:48 BoogieIcfgContainer [2024-11-27 20:05:48,699 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:05:48,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:05:48,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:05:48,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:05:48,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:05:47" (1/3) ... [2024-11-27 20:05:48,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11780f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:05:48, skipping insertion in model container [2024-11-27 20:05:48,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:47" (2/3) ... [2024-11-27 20:05:48,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11780f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:05:48, skipping insertion in model container [2024-11-27 20:05:48,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:05:48" (3/3) ... [2024-11-27 20:05:48,712 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-27 20:05:48,730 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:05:48,732 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 20:05:48,733 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:05:48,808 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:05:48,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-27 20:05:48,899 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-27 20:05:48,906 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:05:48,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-27 20:05:48,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-27 20:05:48,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-27 20:05:48,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:05:48,955 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;@20279017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:05:48,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 20:05:48,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:05:48,975 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-27 20:05:48,975 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:05:48,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:05:48,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:48,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:05:48,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:48,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2028088332, now seen corresponding path program 1 times [2024-11-27 20:05:48,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:48,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100847027] [2024-11-27 20:05:48,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:48,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100847027] [2024-11-27 20:05:49,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100847027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:49,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:05:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049657916] [2024-11-27 20:05:49,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:49,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:05:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:49,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:05:49,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:05:49,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-27 20:05:49,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-27 20:05:49,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:05:49,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-27 20:05:49,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:05:49,535 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2024-11-27 20:05:49,535 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-27 20:05:49,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 123 events. 61/123 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 372 event pairs, 31 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 213. Up to 86 conditions per place. [2024-11-27 20:05:49,539 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-27 20:05:49,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2024-11-27 20:05:49,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:05:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:05:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-27 20:05:49,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-27 20:05:49,556 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 48 transitions. [2024-11-27 20:05:49,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2024-11-27 20:05:49,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:05:49,564 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-27 20:05:49,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-27 20:05:49,571 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-11-27 20:05:49,572 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-27 20:05:49,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-27 20:05:49,572 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:05:49,572 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:49,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:05:49,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:05:49,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1678747128, now seen corresponding path program 1 times [2024-11-27 20:05:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:49,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464803367] [2024-11-27 20:05:49,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:49,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:05:49,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:49,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464803367] [2024-11-27 20:05:49,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464803367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:49,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:49,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:05:49,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200702860] [2024-11-27 20:05:49,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:49,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:05:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:49,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:05:49,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:05:49,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-27 20:05:49,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-27 20:05:49,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:05:49,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-27 20:05:49,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:05:49,954 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2024-11-27 20:05:49,954 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-27 20:05:49,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 174 events. 89/174 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 582 event pairs, 42 based on Foata normal form. 10/177 useless extension candidates. Maximal degree in co-relation 103. Up to 108 conditions per place. [2024-11-27 20:05:49,957 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-27 20:05:49,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2024-11-27 20:05:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:05:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:05:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-27 20:05:49,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-27 20:05:49,959 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 48 transitions. [2024-11-27 20:05:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2024-11-27 20:05:49,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:05:49,961 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-27 20:05:49,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-27 20:05:49,962 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-27 20:05:49,963 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-27 20:05:49,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-27 20:05:49,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:05:49,963 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:49,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:05:49,963 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:05:49,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash 869220417, now seen corresponding path program 1 times [2024-11-27 20:05:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:49,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681804511] [2024-11-27 20:05:49,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681804511] [2024-11-27 20:05:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681804511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:50,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142828772] [2024-11-27 20:05:50,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:50,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:50,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:50,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:50,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:05:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:50,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:05:50,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:51,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142828772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:52,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-27 20:05:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488658261] [2024-11-27 20:05:52,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:52,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:05:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:52,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:05:52,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:05:52,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:05:52,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 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) [2024-11-27 20:05:52,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:05:52,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:05:52,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:05:54,564 INFO L124 PetriNetUnfolderBase]: 565/989 cut-off events. [2024-11-27 20:05:54,565 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-11-27 20:05:54,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 989 events. 565/989 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4586 event pairs, 13 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 881. Up to 211 conditions per place. [2024-11-27 20:05:54,574 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 123 selfloop transitions, 111 changer transitions 13/248 dead transitions. [2024-11-27 20:05:54,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 248 transitions, 1234 flow [2024-11-27 20:05:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:05:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-27 20:05:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 389 transitions. [2024-11-27 20:05:54,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4336677814938685 [2024-11-27 20:05:54,579 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 39 states and 389 transitions. [2024-11-27 20:05:54,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 248 transitions, 1234 flow [2024-11-27 20:05:54,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 248 transitions, 1220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:05:54,586 INFO L231 Difference]: Finished difference. Result has 78 places, 149 transitions, 912 flow [2024-11-27 20:05:54,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=912, PETRI_PLACES=78, PETRI_TRANSITIONS=149} [2024-11-27 20:05:54,587 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2024-11-27 20:05:54,588 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 149 transitions, 912 flow [2024-11-27 20:05:54,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 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) [2024-11-27 20:05:54,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:05:54,588 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:54,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:54,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:54,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:05:54,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 106919459, now seen corresponding path program 2 times [2024-11-27 20:05:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812744094] [2024-11-27 20:05:54,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:05:54,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:54,811 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:05:54,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:05:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812744094] [2024-11-27 20:05:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812744094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328609211] [2024-11-27 20:05:55,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:05:55,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:55,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:55,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:55,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:05:55,242 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:05:55,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:05:55,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:05:55,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:55,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:56,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328609211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:56,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:56,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-27 20:05:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341791804] [2024-11-27 20:05:56,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:56,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:05:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:56,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:05:56,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:05:56,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:05:56,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 149 transitions, 912 flow. Second operand has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:05:56,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:05:56,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:05:56,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:05:57,774 INFO L124 PetriNetUnfolderBase]: 645/1190 cut-off events. [2024-11-27 20:05:57,774 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-11-27 20:05:57,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 1190 events. 645/1190 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5808 event pairs, 31 based on Foata normal form. 3/1193 useless extension candidates. Maximal degree in co-relation 4650. Up to 359 conditions per place. [2024-11-27 20:05:57,788 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 128 selfloop transitions, 120 changer transitions 26/275 dead transitions. [2024-11-27 20:05:57,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 275 transitions, 2204 flow [2024-11-27 20:05:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:05:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-27 20:05:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 282 transitions. [2024-11-27 20:05:57,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43788819875776397 [2024-11-27 20:05:57,795 INFO L175 Difference]: Start difference. First operand has 78 places, 149 transitions, 912 flow. Second operand 28 states and 282 transitions. [2024-11-27 20:05:57,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 275 transitions, 2204 flow [2024-11-27 20:05:57,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 275 transitions, 2106 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-27 20:05:57,863 INFO L231 Difference]: Finished difference. Result has 111 places, 181 transitions, 1440 flow [2024-11-27 20:05:57,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1440, PETRI_PLACES=111, PETRI_TRANSITIONS=181} [2024-11-27 20:05:57,865 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 86 predicate places. [2024-11-27 20:05:57,866 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 181 transitions, 1440 flow [2024-11-27 20:05:57,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:05:57,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:05:57,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:57,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:58,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:58,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:05:58,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1497613219, now seen corresponding path program 3 times [2024-11-27 20:05:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:58,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669093503] [2024-11-27 20:05:58,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:05:58,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:58,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:05:58,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:05:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:58,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669093503] [2024-11-27 20:05:58,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669093503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421435152] [2024-11-27 20:05:58,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:05:58,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:58,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:58,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:05:58,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:05:58,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:05:58,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:05:58,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:58,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:05:59,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421435152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:59,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:59,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-27 20:05:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672664562] [2024-11-27 20:05:59,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:59,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:05:59,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:59,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:05:59,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:05:59,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:05:59,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 181 transitions, 1440 flow. Second operand has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:05:59,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:05:59,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:05:59,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:01,543 INFO L124 PetriNetUnfolderBase]: 787/1438 cut-off events. [2024-11-27 20:06:01,543 INFO L125 PetriNetUnfolderBase]: For 6449/6449 co-relation queries the response was YES. [2024-11-27 20:06:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1438 events. 787/1438 cut-off events. For 6449/6449 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7381 event pairs, 18 based on Foata normal form. 17/1455 useless extension candidates. Maximal degree in co-relation 6584. Up to 359 conditions per place. [2024-11-27 20:06:01,559 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 146 selfloop transitions, 171 changer transitions 31/349 dead transitions. [2024-11-27 20:06:01,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 349 transitions, 3353 flow [2024-11-27 20:06:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 20:06:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-27 20:06:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 384 transitions. [2024-11-27 20:06:01,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40721102863202546 [2024-11-27 20:06:01,562 INFO L175 Difference]: Start difference. First operand has 111 places, 181 transitions, 1440 flow. Second operand 41 states and 384 transitions. [2024-11-27 20:06:01,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 349 transitions, 3353 flow [2024-11-27 20:06:01,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 349 transitions, 3178 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-11-27 20:06:01,608 INFO L231 Difference]: Finished difference. Result has 157 places, 231 transitions, 2409 flow [2024-11-27 20:06:01,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2409, PETRI_PLACES=157, PETRI_TRANSITIONS=231} [2024-11-27 20:06:01,609 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 132 predicate places. [2024-11-27 20:06:01,609 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 231 transitions, 2409 flow [2024-11-27 20:06:01,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:01,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:01,609 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:01,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:06:01,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:01,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:01,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:01,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1944436573, now seen corresponding path program 4 times [2024-11-27 20:06:01,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:01,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874015748] [2024-11-27 20:06:01,811 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:06:01,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:01,824 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:06:01,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:02,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874015748] [2024-11-27 20:06:02,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874015748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128511290] [2024-11-27 20:06:02,136 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:06:02,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:02,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:02,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:02,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:06:02,226 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:06:02,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:02,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:06:02,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:02,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128511290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:03,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:03,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 27 [2024-11-27 20:06:03,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996175462] [2024-11-27 20:06:03,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:03,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:06:03,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:03,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:06:03,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:06:03,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:03,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 231 transitions, 2409 flow. Second operand has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 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) [2024-11-27 20:06:03,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:03,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:03,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:06,850 INFO L124 PetriNetUnfolderBase]: 1088/1943 cut-off events. [2024-11-27 20:06:06,851 INFO L125 PetriNetUnfolderBase]: For 16893/16893 co-relation queries the response was YES. [2024-11-27 20:06:06,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11369 conditions, 1943 events. 1088/1943 cut-off events. For 16893/16893 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10213 event pairs, 21 based on Foata normal form. 14/1957 useless extension candidates. Maximal degree in co-relation 11218. Up to 427 conditions per place. [2024-11-27 20:06:06,874 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 215 selfloop transitions, 320 changer transitions 22/558 dead transitions. [2024-11-27 20:06:06,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 558 transitions, 6789 flow [2024-11-27 20:06:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-27 20:06:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-27 20:06:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 651 transitions. [2024-11-27 20:06:06,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4043478260869565 [2024-11-27 20:06:06,878 INFO L175 Difference]: Start difference. First operand has 157 places, 231 transitions, 2409 flow. Second operand 70 states and 651 transitions. [2024-11-27 20:06:06,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 558 transitions, 6789 flow [2024-11-27 20:06:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 558 transitions, 6405 flow, removed 153 selfloop flow, removed 13 redundant places. [2024-11-27 20:06:07,022 INFO L231 Difference]: Finished difference. Result has 233 places, 393 transitions, 5464 flow [2024-11-27 20:06:07,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=5464, PETRI_PLACES=233, PETRI_TRANSITIONS=393} [2024-11-27 20:06:07,024 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 208 predicate places. [2024-11-27 20:06:07,024 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 393 transitions, 5464 flow [2024-11-27 20:06:07,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 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) [2024-11-27 20:06:07,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:07,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:07,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:06:07,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:06:07,229 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:07,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1507110749, now seen corresponding path program 5 times [2024-11-27 20:06:07,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:07,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757442205] [2024-11-27 20:06:07,230 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:06:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:07,243 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:06:07,244 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757442205] [2024-11-27 20:06:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757442205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:07,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:07,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:06:07,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114255897] [2024-11-27 20:06:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:07,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:07,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:07,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:07,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:06:07,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-27 20:06:07,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 393 transitions, 5464 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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) [2024-11-27 20:06:07,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:07,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-27 20:06:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:08,511 INFO L124 PetriNetUnfolderBase]: 960/1842 cut-off events. [2024-11-27 20:06:08,511 INFO L125 PetriNetUnfolderBase]: For 33264/33278 co-relation queries the response was YES. [2024-11-27 20:06:08,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 1842 events. 960/1842 cut-off events. For 33264/33278 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10538 event pairs, 49 based on Foata normal form. 4/1832 useless extension candidates. Maximal degree in co-relation 12954. Up to 1295 conditions per place. [2024-11-27 20:06:08,535 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 283 selfloop transitions, 41 changer transitions 10/451 dead transitions. [2024-11-27 20:06:08,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 451 transitions, 6692 flow [2024-11-27 20:06:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:06:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-27 20:06:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 163 transitions. [2024-11-27 20:06:08,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47246376811594204 [2024-11-27 20:06:08,541 INFO L175 Difference]: Start difference. First operand has 233 places, 393 transitions, 5464 flow. Second operand 15 states and 163 transitions. [2024-11-27 20:06:08,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 451 transitions, 6692 flow [2024-11-27 20:06:08,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 451 transitions, 5873 flow, removed 311 selfloop flow, removed 18 redundant places. [2024-11-27 20:06:08,798 INFO L231 Difference]: Finished difference. Result has 233 places, 421 transitions, 5264 flow [2024-11-27 20:06:08,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=4681, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5264, PETRI_PLACES=233, PETRI_TRANSITIONS=421} [2024-11-27 20:06:08,799 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 208 predicate places. [2024-11-27 20:06:08,799 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 421 transitions, 5264 flow [2024-11-27 20:06:08,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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) [2024-11-27 20:06:08,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:08,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:08,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:06:08,800 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:08,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1780950097, now seen corresponding path program 6 times [2024-11-27 20:06:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:08,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809641983] [2024-11-27 20:06:08,801 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:06:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:08,810 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 20:06:08,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809641983] [2024-11-27 20:06:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809641983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:06:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552456901] [2024-11-27 20:06:09,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:09,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:09,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:09,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:06:09,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-27 20:06:09,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 421 transitions, 5264 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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) [2024-11-27 20:06:09,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:09,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-27 20:06:09,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:09,756 INFO L124 PetriNetUnfolderBase]: 958/1830 cut-off events. [2024-11-27 20:06:09,756 INFO L125 PetriNetUnfolderBase]: For 28868/28882 co-relation queries the response was YES. [2024-11-27 20:06:09,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12080 conditions, 1830 events. 958/1830 cut-off events. For 28868/28882 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10387 event pairs, 49 based on Foata normal form. 3/1819 useless extension candidates. Maximal degree in co-relation 11912. Up to 1315 conditions per place. [2024-11-27 20:06:09,774 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 282 selfloop transitions, 33 changer transitions 7/439 dead transitions. [2024-11-27 20:06:09,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 439 transitions, 6019 flow [2024-11-27 20:06:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:06:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 20:06:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-11-27 20:06:09,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4743083003952569 [2024-11-27 20:06:09,775 INFO L175 Difference]: Start difference. First operand has 233 places, 421 transitions, 5264 flow. Second operand 11 states and 120 transitions. [2024-11-27 20:06:09,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 439 transitions, 6019 flow [2024-11-27 20:06:10,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 439 transitions, 5831 flow, removed 94 selfloop flow, removed 2 redundant places. [2024-11-27 20:06:10,034 INFO L231 Difference]: Finished difference. Result has 242 places, 421 transitions, 5199 flow [2024-11-27 20:06:10,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5120, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5199, PETRI_PLACES=242, PETRI_TRANSITIONS=421} [2024-11-27 20:06:10,035 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 217 predicate places. [2024-11-27 20:06:10,035 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 421 transitions, 5199 flow [2024-11-27 20:06:10,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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) [2024-11-27 20:06:10,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:10,036 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:10,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:06:10,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:10,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1115965311, now seen corresponding path program 7 times [2024-11-27 20:06:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:10,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045172904] [2024-11-27 20:06:10,037 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:06:10,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:06:10,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045172904] [2024-11-27 20:06:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045172904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:10,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:10,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:06:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952330892] [2024-11-27 20:06:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:10,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:10,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:10,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:10,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-27 20:06:10,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 421 transitions, 5199 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-27 20:06:10,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:10,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-27 20:06:10,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:10,889 INFO L124 PetriNetUnfolderBase]: 1020/1861 cut-off events. [2024-11-27 20:06:10,890 INFO L125 PetriNetUnfolderBase]: For 28293/28321 co-relation queries the response was YES. [2024-11-27 20:06:10,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12019 conditions, 1861 events. 1020/1861 cut-off events. For 28293/28321 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10016 event pairs, 36 based on Foata normal form. 34/1889 useless extension candidates. Maximal degree in co-relation 11936. Up to 917 conditions per place. [2024-11-27 20:06:10,920 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 238 selfloop transitions, 161 changer transitions 1/449 dead transitions. [2024-11-27 20:06:10,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 449 transitions, 6295 flow [2024-11-27 20:06:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:06:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:06:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-27 20:06:10,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-11-27 20:06:10,922 INFO L175 Difference]: Start difference. First operand has 242 places, 421 transitions, 5199 flow. Second operand 5 states and 59 transitions. [2024-11-27 20:06:10,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 449 transitions, 6295 flow [2024-11-27 20:06:11,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 449 transitions, 6226 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-11-27 20:06:11,217 INFO L231 Difference]: Finished difference. Result has 229 places, 419 transitions, 5781 flow [2024-11-27 20:06:11,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5011, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5781, PETRI_PLACES=229, PETRI_TRANSITIONS=419} [2024-11-27 20:06:11,219 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 204 predicate places. [2024-11-27 20:06:11,219 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 419 transitions, 5781 flow [2024-11-27 20:06:11,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-27 20:06:11,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:11,220 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:11,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:06:11,220 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:11,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1942768115, now seen corresponding path program 8 times [2024-11-27 20:06:11,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:11,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486562222] [2024-11-27 20:06:11,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:06:11,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:11,235 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:06:11,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:11,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486562222] [2024-11-27 20:06:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486562222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352983228] [2024-11-27 20:06:11,542 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:06:11,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:11,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:11,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:06:11,605 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:06:11,605 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:11,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:06:11,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:11,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352983228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:12,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:12,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-27 20:06:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717375075] [2024-11-27 20:06:12,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:12,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:06:12,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:12,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:06:12,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:06:12,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:12,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 419 transitions, 5781 flow. Second operand has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 24 states have internal predecessors, (143), 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) [2024-11-27 20:06:12,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:12,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:12,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:13,835 INFO L124 PetriNetUnfolderBase]: 1254/2212 cut-off events. [2024-11-27 20:06:13,835 INFO L125 PetriNetUnfolderBase]: For 30245/30245 co-relation queries the response was YES. [2024-11-27 20:06:13,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15289 conditions, 2212 events. 1254/2212 cut-off events. For 30245/30245 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11848 event pairs, 35 based on Foata normal form. 2/2214 useless extension candidates. Maximal degree in co-relation 15034. Up to 1092 conditions per place. [2024-11-27 20:06:13,861 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 231 selfloop transitions, 302 changer transitions 19/553 dead transitions. [2024-11-27 20:06:13,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 553 transitions, 8420 flow [2024-11-27 20:06:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:06:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-27 20:06:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 191 transitions. [2024-11-27 20:06:13,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43707093821510296 [2024-11-27 20:06:13,863 INFO L175 Difference]: Start difference. First operand has 229 places, 419 transitions, 5781 flow. Second operand 19 states and 191 transitions. [2024-11-27 20:06:13,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 553 transitions, 8420 flow [2024-11-27 20:06:14,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 553 transitions, 8420 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:06:14,134 INFO L231 Difference]: Finished difference. Result has 258 places, 486 transitions, 7863 flow [2024-11-27 20:06:14,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5781, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7863, PETRI_PLACES=258, PETRI_TRANSITIONS=486} [2024-11-27 20:06:14,135 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 233 predicate places. [2024-11-27 20:06:14,135 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 486 transitions, 7863 flow [2024-11-27 20:06:14,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 24 states have internal predecessors, (143), 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) [2024-11-27 20:06:14,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:14,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:14,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:06:14,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:06:14,336 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:14,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -951322461, now seen corresponding path program 9 times [2024-11-27 20:06:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938039753] [2024-11-27 20:06:14,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:06:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:14,345 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:06:14,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938039753] [2024-11-27 20:06:14,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938039753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408929980] [2024-11-27 20:06:14,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:06:14,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:14,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:14,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:14,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:06:14,614 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:06:14,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:14,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:06:14,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:14,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:15,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408929980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:15,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:15,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-27 20:06:15,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517950524] [2024-11-27 20:06:15,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:15,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:06:15,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:15,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:06:15,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:06:15,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:15,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 486 transitions, 7863 flow. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 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) [2024-11-27 20:06:15,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:15,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:15,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:17,172 INFO L124 PetriNetUnfolderBase]: 1395/2456 cut-off events. [2024-11-27 20:06:17,173 INFO L125 PetriNetUnfolderBase]: For 42020/42020 co-relation queries the response was YES. [2024-11-27 20:06:17,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 2456 events. 1395/2456 cut-off events. For 42020/42020 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13504 event pairs, 29 based on Foata normal form. 2/2458 useless extension candidates. Maximal degree in co-relation 18963. Up to 1155 conditions per place. [2024-11-27 20:06:17,206 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 233 selfloop transitions, 431 changer transitions 11/676 dead transitions. [2024-11-27 20:06:17,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 676 transitions, 11739 flow [2024-11-27 20:06:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-27 20:06:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-27 20:06:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 310 transitions. [2024-11-27 20:06:17,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39641943734015345 [2024-11-27 20:06:17,210 INFO L175 Difference]: Start difference. First operand has 258 places, 486 transitions, 7863 flow. Second operand 34 states and 310 transitions. [2024-11-27 20:06:17,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 676 transitions, 11739 flow [2024-11-27 20:06:17,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 676 transitions, 11566 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-11-27 20:06:17,827 INFO L231 Difference]: Finished difference. Result has 292 places, 603 transitions, 11012 flow [2024-11-27 20:06:17,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=7749, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=11012, PETRI_PLACES=292, PETRI_TRANSITIONS=603} [2024-11-27 20:06:17,828 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 267 predicate places. [2024-11-27 20:06:17,828 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 603 transitions, 11012 flow [2024-11-27 20:06:17,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 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) [2024-11-27 20:06:17,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:17,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:17,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:06:18,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:18,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:18,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash 751560449, now seen corresponding path program 10 times [2024-11-27 20:06:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393565829] [2024-11-27 20:06:18,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:06:18,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:18,042 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:06:18,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393565829] [2024-11-27 20:06:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393565829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:06:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060019482] [2024-11-27 20:06:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:18,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:06:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:18,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:06:18,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:06:18,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:18,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 603 transitions, 11012 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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) [2024-11-27 20:06:18,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:18,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:18,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:19,510 INFO L124 PetriNetUnfolderBase]: 1459/2561 cut-off events. [2024-11-27 20:06:19,511 INFO L125 PetriNetUnfolderBase]: For 50851/50851 co-relation queries the response was YES. [2024-11-27 20:06:19,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21695 conditions, 2561 events. 1459/2561 cut-off events. For 50851/50851 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14126 event pairs, 42 based on Foata normal form. 1/2562 useless extension candidates. Maximal degree in co-relation 21517. Up to 1862 conditions per place. [2024-11-27 20:06:19,548 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 431 selfloop transitions, 237 changer transitions 4/673 dead transitions. [2024-11-27 20:06:19,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 673 transitions, 13202 flow [2024-11-27 20:06:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:06:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:06:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-11-27 20:06:19,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40942028985507245 [2024-11-27 20:06:19,550 INFO L175 Difference]: Start difference. First operand has 292 places, 603 transitions, 11012 flow. Second operand 12 states and 113 transitions. [2024-11-27 20:06:19,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 673 transitions, 13202 flow [2024-11-27 20:06:20,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 673 transitions, 12843 flow, removed 148 selfloop flow, removed 8 redundant places. [2024-11-27 20:06:20,161 INFO L231 Difference]: Finished difference. Result has 301 places, 642 transitions, 12307 flow [2024-11-27 20:06:20,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=10687, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12307, PETRI_PLACES=301, PETRI_TRANSITIONS=642} [2024-11-27 20:06:20,163 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 276 predicate places. [2024-11-27 20:06:20,163 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 642 transitions, 12307 flow [2024-11-27 20:06:20,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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) [2024-11-27 20:06:20,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:20,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:20,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:06:20,163 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:20,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1492512547, now seen corresponding path program 11 times [2024-11-27 20:06:20,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:20,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916543049] [2024-11-27 20:06:20,164 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:06:20,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:20,172 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:06:20,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916543049] [2024-11-27 20:06:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916543049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:20,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:06:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569486109] [2024-11-27 20:06:20,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:20,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:20,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:20,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:20,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:06:20,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-27 20:06:20,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 642 transitions, 12307 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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) [2024-11-27 20:06:20,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:20,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-27 20:06:20,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:21,371 INFO L124 PetriNetUnfolderBase]: 1258/2368 cut-off events. [2024-11-27 20:06:21,372 INFO L125 PetriNetUnfolderBase]: For 51213/51235 co-relation queries the response was YES. [2024-11-27 20:06:21,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21591 conditions, 2368 events. 1258/2368 cut-off events. For 51213/51235 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14169 event pairs, 35 based on Foata normal form. 1/2350 useless extension candidates. Maximal degree in co-relation 21418. Up to 1681 conditions per place. [2024-11-27 20:06:21,400 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 454 selfloop transitions, 38 changer transitions 4/675 dead transitions. [2024-11-27 20:06:21,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 675 transitions, 13776 flow [2024-11-27 20:06:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:06:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:06:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-11-27 20:06:21,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4608695652173913 [2024-11-27 20:06:21,402 INFO L175 Difference]: Start difference. First operand has 301 places, 642 transitions, 12307 flow. Second operand 10 states and 106 transitions. [2024-11-27 20:06:21,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 675 transitions, 13776 flow [2024-11-27 20:06:22,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 675 transitions, 13760 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-27 20:06:22,034 INFO L231 Difference]: Finished difference. Result has 313 places, 660 transitions, 12788 flow [2024-11-27 20:06:22,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12291, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12788, PETRI_PLACES=313, PETRI_TRANSITIONS=660} [2024-11-27 20:06:22,036 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 288 predicate places. [2024-11-27 20:06:22,036 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 660 transitions, 12788 flow [2024-11-27 20:06:22,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 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) [2024-11-27 20:06:22,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:22,036 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:22,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:06:22,036 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:22,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash 652628071, now seen corresponding path program 12 times [2024-11-27 20:06:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:22,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722066375] [2024-11-27 20:06:22,037 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:06:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:22,051 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:06:22,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:22,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722066375] [2024-11-27 20:06:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722066375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:22,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576617510] [2024-11-27 20:06:22,380 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:06:22,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:22,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:22,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:22,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:06:22,440 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:06:22,440 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:22,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:06:22,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:06:22,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:22,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576617510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:22,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:22,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2024-11-27 20:06:22,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193028765] [2024-11-27 20:06:22,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:22,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:22,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:22,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:22,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:06:22,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:22,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 660 transitions, 12788 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:22,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:22,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:22,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:23,864 INFO L124 PetriNetUnfolderBase]: 1500/2634 cut-off events. [2024-11-27 20:06:23,864 INFO L125 PetriNetUnfolderBase]: For 53863/53863 co-relation queries the response was YES. [2024-11-27 20:06:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23555 conditions, 2634 events. 1500/2634 cut-off events. For 53863/53863 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14660 event pairs, 52 based on Foata normal form. 2/2636 useless extension candidates. Maximal degree in co-relation 23383. Up to 2131 conditions per place. [2024-11-27 20:06:23,893 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 587 selfloop transitions, 93 changer transitions 6/687 dead transitions. [2024-11-27 20:06:23,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 687 transitions, 14466 flow [2024-11-27 20:06:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:06:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 20:06:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-11-27 20:06:23,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4311594202898551 [2024-11-27 20:06:23,895 INFO L175 Difference]: Start difference. First operand has 313 places, 660 transitions, 12788 flow. Second operand 12 states and 119 transitions. [2024-11-27 20:06:23,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 687 transitions, 14466 flow [2024-11-27 20:06:24,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 687 transitions, 14434 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-27 20:06:24,504 INFO L231 Difference]: Finished difference. Result has 323 places, 663 transitions, 13114 flow [2024-11-27 20:06:24,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12758, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13114, PETRI_PLACES=323, PETRI_TRANSITIONS=663} [2024-11-27 20:06:24,505 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 298 predicate places. [2024-11-27 20:06:24,505 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 663 transitions, 13114 flow [2024-11-27 20:06:24,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:24,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:24,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:24,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:06:24,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:24,706 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:24,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash 71036249, now seen corresponding path program 13 times [2024-11-27 20:06:24,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:24,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923735388] [2024-11-27 20:06:24,707 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:06:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923735388] [2024-11-27 20:06:24,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923735388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009624022] [2024-11-27 20:06:24,997 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:06:24,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:24,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:24,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:25,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:06:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:25,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:06:25,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:06:25,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009624022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:25,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:25,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-27 20:06:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940428396] [2024-11-27 20:06:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:25,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:25,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:25,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:06:25,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:25,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 663 transitions, 13114 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:25,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:25,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:25,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:26,073 INFO L124 PetriNetUnfolderBase]: 1536/2682 cut-off events. [2024-11-27 20:06:26,073 INFO L125 PetriNetUnfolderBase]: For 58313/58313 co-relation queries the response was YES. [2024-11-27 20:06:26,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24462 conditions, 2682 events. 1536/2682 cut-off events. For 58313/58313 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14910 event pairs, 55 based on Foata normal form. 1/2683 useless extension candidates. Maximal degree in co-relation 24296. Up to 2324 conditions per place. [2024-11-27 20:06:26,099 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 640 selfloop transitions, 54 changer transitions 7/702 dead transitions. [2024-11-27 20:06:26,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 702 transitions, 15187 flow [2024-11-27 20:06:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:06:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:06:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-11-27 20:06:26,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2024-11-27 20:06:26,102 INFO L175 Difference]: Start difference. First operand has 323 places, 663 transitions, 13114 flow. Second operand 10 states and 99 transitions. [2024-11-27 20:06:26,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 702 transitions, 15187 flow [2024-11-27 20:06:26,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 702 transitions, 14897 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-11-27 20:06:26,766 INFO L231 Difference]: Finished difference. Result has 323 places, 673 transitions, 13283 flow [2024-11-27 20:06:26,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12882, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13283, PETRI_PLACES=323, PETRI_TRANSITIONS=673} [2024-11-27 20:06:26,767 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 298 predicate places. [2024-11-27 20:06:26,767 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 673 transitions, 13283 flow [2024-11-27 20:06:26,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:26,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:26,767 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:26,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:06:26,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:06:26,967 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:26,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -361671453, now seen corresponding path program 14 times [2024-11-27 20:06:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305600965] [2024-11-27 20:06:26,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:06:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:26,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:06:26,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305600965] [2024-11-27 20:06:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305600965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749363909] [2024-11-27 20:06:27,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:06:27,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:27,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:27,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:27,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:06:27,276 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:06:27,276 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:27,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:06:27,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:06:27,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:27,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749363909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:27,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:27,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-11-27 20:06:27,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036499760] [2024-11-27 20:06:27,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:27,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:27,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:27,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:06:27,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:27,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 673 transitions, 13283 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:27,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:27,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:27,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:28,590 INFO L124 PetriNetUnfolderBase]: 1533/2670 cut-off events. [2024-11-27 20:06:28,590 INFO L125 PetriNetUnfolderBase]: For 52772/52772 co-relation queries the response was YES. [2024-11-27 20:06:28,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24122 conditions, 2670 events. 1533/2670 cut-off events. For 52772/52772 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14773 event pairs, 85 based on Foata normal form. 1/2671 useless extension candidates. Maximal degree in co-relation 23963. Up to 2277 conditions per place. [2024-11-27 20:06:28,613 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 618 selfloop transitions, 66 changer transitions 4/689 dead transitions. [2024-11-27 20:06:28,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 689 transitions, 14814 flow [2024-11-27 20:06:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:06:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:06:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-27 20:06:28,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41739130434782606 [2024-11-27 20:06:28,614 INFO L175 Difference]: Start difference. First operand has 323 places, 673 transitions, 13283 flow. Second operand 10 states and 96 transitions. [2024-11-27 20:06:28,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 689 transitions, 14814 flow [2024-11-27 20:06:29,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 689 transitions, 14716 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-27 20:06:29,241 INFO L231 Difference]: Finished difference. Result has 322 places, 672 transitions, 13303 flow [2024-11-27 20:06:29,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=13187, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13303, PETRI_PLACES=322, PETRI_TRANSITIONS=672} [2024-11-27 20:06:29,242 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 297 predicate places. [2024-11-27 20:06:29,242 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 672 transitions, 13303 flow [2024-11-27 20:06:29,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:29,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:29,242 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:29,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:06:29,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:06:29,443 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:29,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash -123402112, now seen corresponding path program 15 times [2024-11-27 20:06:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147058022] [2024-11-27 20:06:29,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:06:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:29,455 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:06:29,455 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:29,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147058022] [2024-11-27 20:06:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147058022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647807852] [2024-11-27 20:06:29,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:06:29,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:29,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:29,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:29,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:06:29,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:06:29,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:29,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:06:29,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:30,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647807852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:30,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:30,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-27 20:06:30,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138587702] [2024-11-27 20:06:30,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:30,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 20:06:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:30,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 20:06:30,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:06:30,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:30,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 672 transitions, 13303 flow. Second operand has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:30,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:30,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:30,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:35,684 INFO L124 PetriNetUnfolderBase]: 2057/3637 cut-off events. [2024-11-27 20:06:35,684 INFO L125 PetriNetUnfolderBase]: For 88911/88911 co-relation queries the response was YES. [2024-11-27 20:06:35,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34019 conditions, 3637 events. 2057/3637 cut-off events. For 88911/88911 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21517 event pairs, 109 based on Foata normal form. 5/3642 useless extension candidates. Maximal degree in co-relation 33820. Up to 870 conditions per place. [2024-11-27 20:06:35,718 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 381 selfloop transitions, 637 changer transitions 26/1045 dead transitions. [2024-11-27 20:06:35,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1045 transitions, 21572 flow [2024-11-27 20:06:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-27 20:06:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2024-11-27 20:06:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 622 transitions. [2024-11-27 20:06:35,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40974967061923584 [2024-11-27 20:06:35,721 INFO L175 Difference]: Start difference. First operand has 322 places, 672 transitions, 13303 flow. Second operand 66 states and 622 transitions. [2024-11-27 20:06:35,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1045 transitions, 21572 flow [2024-11-27 20:06:36,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1045 transitions, 21455 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-27 20:06:36,644 INFO L231 Difference]: Finished difference. Result has 395 places, 880 transitions, 19857 flow [2024-11-27 20:06:36,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=13198, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=19857, PETRI_PLACES=395, PETRI_TRANSITIONS=880} [2024-11-27 20:06:36,645 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 370 predicate places. [2024-11-27 20:06:36,645 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 880 transitions, 19857 flow [2024-11-27 20:06:36,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:06:36,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:36,645 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:36,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:06:36,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:06:36,850 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:36,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1729088230, now seen corresponding path program 16 times [2024-11-27 20:06:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:36,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126135710] [2024-11-27 20:06:36,851 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:06:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:36,858 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:06:36,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:06:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126135710] [2024-11-27 20:06:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126135710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643975917] [2024-11-27 20:06:37,089 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:06:37,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:37,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:37,092 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:06:37,151 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:06:37,151 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:37,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:06:37,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:37,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:38,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643975917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:38,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:38,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 33 [2024-11-27 20:06:38,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557237012] [2024-11-27 20:06:38,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:38,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:06:38,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:38,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:06:38,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:06:38,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:38,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 880 transitions, 19857 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:06:38,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:38,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:38,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:06:47,664 INFO L124 PetriNetUnfolderBase]: 2618/4681 cut-off events. [2024-11-27 20:06:47,664 INFO L125 PetriNetUnfolderBase]: For 160204/160204 co-relation queries the response was YES. [2024-11-27 20:06:47,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49589 conditions, 4681 events. 2618/4681 cut-off events. For 160204/160204 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 29756 event pairs, 85 based on Foata normal form. 12/4693 useless extension candidates. Maximal degree in co-relation 49471. Up to 1240 conditions per place. [2024-11-27 20:06:47,711 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 454 selfloop transitions, 962 changer transitions 92/1509 dead transitions. [2024-11-27 20:06:47,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1509 transitions, 34004 flow [2024-11-27 20:06:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-11-27 20:06:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2024-11-27 20:06:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 1330 transitions. [2024-11-27 20:06:47,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3683190252007754 [2024-11-27 20:06:47,715 INFO L175 Difference]: Start difference. First operand has 395 places, 880 transitions, 19857 flow. Second operand 157 states and 1330 transitions. [2024-11-27 20:06:47,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1509 transitions, 34004 flow [2024-11-27 20:06:49,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1509 transitions, 32955 flow, removed 340 selfloop flow, removed 13 redundant places. [2024-11-27 20:06:49,878 INFO L231 Difference]: Finished difference. Result has 558 places, 1182 transitions, 29723 flow [2024-11-27 20:06:49,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=19256, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=157, PETRI_FLOW=29723, PETRI_PLACES=558, PETRI_TRANSITIONS=1182} [2024-11-27 20:06:49,880 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 533 predicate places. [2024-11-27 20:06:49,880 INFO L471 AbstractCegarLoop]: Abstraction has has 558 places, 1182 transitions, 29723 flow [2024-11-27 20:06:49,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:06:49,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:06:49,880 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:49,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:06:50,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:06:50,081 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:06:50,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1888439556, now seen corresponding path program 17 times [2024-11-27 20:06:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137418320] [2024-11-27 20:06:50,082 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:06:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:50,092 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:06:50,093 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137418320] [2024-11-27 20:06:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137418320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716762768] [2024-11-27 20:06:50,428 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:06:50,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:50,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:50,431 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:50,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:06:50,487 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 20:06:50,487 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:06:50,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:06:50,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:50,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:51,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716762768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:51,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:51,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-27 20:06:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130156122] [2024-11-27 20:06:51,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:51,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:06:51,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:51,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:06:51,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:06:51,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:06:51,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 1182 transitions, 29723 flow. Second operand has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 states have internal predecessors, (197), 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) [2024-11-27 20:06:51,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:06:51,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:06:51,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:07:03,710 INFO L124 PetriNetUnfolderBase]: 3054/5493 cut-off events. [2024-11-27 20:07:03,710 INFO L125 PetriNetUnfolderBase]: For 228576/228576 co-relation queries the response was YES. [2024-11-27 20:07:03,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62922 conditions, 5493 events. 3054/5493 cut-off events. For 228576/228576 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 36175 event pairs, 62 based on Foata normal form. 9/5502 useless extension candidates. Maximal degree in co-relation 62785. Up to 1376 conditions per place. [2024-11-27 20:07:03,842 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 520 selfloop transitions, 1167 changer transitions 34/1722 dead transitions. [2024-11-27 20:07:03,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 1722 transitions, 45006 flow [2024-11-27 20:07:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-27 20:07:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2024-11-27 20:07:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 1182 transitions. [2024-11-27 20:07:03,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3751190098381466 [2024-11-27 20:07:03,845 INFO L175 Difference]: Start difference. First operand has 558 places, 1182 transitions, 29723 flow. Second operand 137 states and 1182 transitions. [2024-11-27 20:07:03,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 1722 transitions, 45006 flow [2024-11-27 20:07:07,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 1722 transitions, 39529 flow, removed 2302 selfloop flow, removed 48 redundant places. [2024-11-27 20:07:07,596 INFO L231 Difference]: Finished difference. Result has 644 places, 1439 transitions, 36920 flow [2024-11-27 20:07:07,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=27212, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=938, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=137, PETRI_FLOW=36920, PETRI_PLACES=644, PETRI_TRANSITIONS=1439} [2024-11-27 20:07:07,598 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 619 predicate places. [2024-11-27 20:07:07,598 INFO L471 AbstractCegarLoop]: Abstraction has has 644 places, 1439 transitions, 36920 flow [2024-11-27 20:07:07,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.628571428571429) internal successors, (197), 35 states have internal predecessors, (197), 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) [2024-11-27 20:07:07,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:07:07,599 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:07,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:07:07,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:07,799 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:07:07,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 476693868, now seen corresponding path program 18 times [2024-11-27 20:07:07,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903208655] [2024-11-27 20:07:07,801 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:07:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:07,811 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:07:07,811 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:07:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:08,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903208655] [2024-11-27 20:07:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903208655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:07:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303605099] [2024-11-27 20:07:08,204 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:07:08,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:08,207 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:07:08,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:07:08,274 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:07:08,274 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:07:08,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:07:08,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:07:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:08,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:07:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:09,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303605099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:07:09,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:07:09,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-27 20:07:09,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182639657] [2024-11-27 20:07:09,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:07:09,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:07:09,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:09,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:07:09,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:07:09,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:07:09,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 1439 transitions, 36920 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:07:09,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:07:09,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:07:09,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:07:16,012 INFO L124 PetriNetUnfolderBase]: 3245/5833 cut-off events. [2024-11-27 20:07:16,012 INFO L125 PetriNetUnfolderBase]: For 137411/137411 co-relation queries the response was YES. [2024-11-27 20:07:16,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63317 conditions, 5833 events. 3245/5833 cut-off events. For 137411/137411 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 38910 event pairs, 93 based on Foata normal form. 3/5836 useless extension candidates. Maximal degree in co-relation 63183. Up to 2356 conditions per place. [2024-11-27 20:07:16,080 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 514 selfloop transitions, 1175 changer transitions 18/1708 dead transitions. [2024-11-27 20:07:16,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 1708 transitions, 45283 flow [2024-11-27 20:07:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-27 20:07:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-27 20:07:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 556 transitions. [2024-11-27 20:07:16,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4097273397199705 [2024-11-27 20:07:16,083 INFO L175 Difference]: Start difference. First operand has 644 places, 1439 transitions, 36920 flow. Second operand 59 states and 556 transitions. [2024-11-27 20:07:16,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 1708 transitions, 45283 flow [2024-11-27 20:07:18,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 1708 transitions, 43999 flow, removed 203 selfloop flow, removed 67 redundant places. [2024-11-27 20:07:18,842 INFO L231 Difference]: Finished difference. Result has 652 places, 1578 transitions, 43595 flow [2024-11-27 20:07:18,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=35780, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=43595, PETRI_PLACES=652, PETRI_TRANSITIONS=1578} [2024-11-27 20:07:18,844 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 627 predicate places. [2024-11-27 20:07:18,844 INFO L471 AbstractCegarLoop]: Abstraction has has 652 places, 1578 transitions, 43595 flow [2024-11-27 20:07:18,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:07:18,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:07:18,844 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:18,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 20:07:19,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:19,045 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:07:19,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1350434548, now seen corresponding path program 19 times [2024-11-27 20:07:19,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:19,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346550097] [2024-11-27 20:07:19,046 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:07:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346550097] [2024-11-27 20:07:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346550097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:07:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713298806] [2024-11-27 20:07:19,392 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:07:19,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:19,395 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:07:19,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:07:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:19,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:07:19,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:07:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:19,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:07:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713298806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:07:20,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:07:20,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-27 20:07:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491580600] [2024-11-27 20:07:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:07:20,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:07:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:20,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:07:20,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:07:20,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:07:20,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 1578 transitions, 43595 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:07:20,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:07:20,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:07:20,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:07:31,073 INFO L124 PetriNetUnfolderBase]: 3546/6357 cut-off events. [2024-11-27 20:07:31,073 INFO L125 PetriNetUnfolderBase]: For 177400/177400 co-relation queries the response was YES. [2024-11-27 20:07:31,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73400 conditions, 6357 events. 3546/6357 cut-off events. For 177400/177400 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 43148 event pairs, 76 based on Foata normal form. 6/6363 useless extension candidates. Maximal degree in co-relation 73252. Up to 1988 conditions per place. [2024-11-27 20:07:31,164 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 628 selfloop transitions, 1280 changer transitions 24/1933 dead transitions. [2024-11-27 20:07:31,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 734 places, 1933 transitions, 53982 flow [2024-11-27 20:07:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-27 20:07:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-11-27 20:07:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 800 transitions. [2024-11-27 20:07:31,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39980009995002497 [2024-11-27 20:07:31,167 INFO L175 Difference]: Start difference. First operand has 652 places, 1578 transitions, 43595 flow. Second operand 87 states and 800 transitions. [2024-11-27 20:07:31,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 734 places, 1933 transitions, 53982 flow [2024-11-27 20:07:35,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 1933 transitions, 53208 flow, removed 114 selfloop flow, removed 30 redundant places. [2024-11-27 20:07:35,564 INFO L231 Difference]: Finished difference. Result has 729 places, 1735 transitions, 51488 flow [2024-11-27 20:07:35,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42870, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=51488, PETRI_PLACES=729, PETRI_TRANSITIONS=1735} [2024-11-27 20:07:35,566 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 704 predicate places. [2024-11-27 20:07:35,566 INFO L471 AbstractCegarLoop]: Abstraction has has 729 places, 1735 transitions, 51488 flow [2024-11-27 20:07:35,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:07:35,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:07:35,567 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:35,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 20:07:35,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 20:07:35,771 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:07:35,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1601868566, now seen corresponding path program 20 times [2024-11-27 20:07:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:35,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123183573] [2024-11-27 20:07:35,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:07:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:35,779 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:07:35,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:07:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123183573] [2024-11-27 20:07:36,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123183573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:07:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736794616] [2024-11-27 20:07:36,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:07:36,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:36,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:36,084 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:07:36,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:07:36,141 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:07:36,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:07:36,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:07:36,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:07:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:36,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:07:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:37,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736794616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:07:37,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:07:37,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-27 20:07:37,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392399346] [2024-11-27 20:07:37,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:07:37,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 20:07:37,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:37,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 20:07:37,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:07:37,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:07:37,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 1735 transitions, 51488 flow. Second operand has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:07:37,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:07:37,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:07:37,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:07:46,783 INFO L124 PetriNetUnfolderBase]: 4026/7205 cut-off events. [2024-11-27 20:07:46,783 INFO L125 PetriNetUnfolderBase]: For 238306/238306 co-relation queries the response was YES. [2024-11-27 20:07:46,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89537 conditions, 7205 events. 4026/7205 cut-off events. For 238306/238306 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 50134 event pairs, 103 based on Foata normal form. 4/7209 useless extension candidates. Maximal degree in co-relation 89367. Up to 3161 conditions per place. [2024-11-27 20:07:46,910 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 774 selfloop transitions, 1270 changer transitions 23/2068 dead transitions. [2024-11-27 20:07:46,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 2068 transitions, 63486 flow [2024-11-27 20:07:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-27 20:07:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-11-27 20:07:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 580 transitions. [2024-11-27 20:07:46,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39402173913043476 [2024-11-27 20:07:46,913 INFO L175 Difference]: Start difference. First operand has 729 places, 1735 transitions, 51488 flow. Second operand 64 states and 580 transitions. [2024-11-27 20:07:46,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 2068 transitions, 63486 flow [2024-11-27 20:07:54,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 2068 transitions, 63004 flow, removed 110 selfloop flow, removed 21 redundant places. [2024-11-27 20:07:54,389 INFO L231 Difference]: Finished difference. Result has 793 places, 1933 transitions, 62511 flow [2024-11-27 20:07:54,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=51061, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=62511, PETRI_PLACES=793, PETRI_TRANSITIONS=1933} [2024-11-27 20:07:54,390 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 768 predicate places. [2024-11-27 20:07:54,391 INFO L471 AbstractCegarLoop]: Abstraction has has 793 places, 1933 transitions, 62511 flow [2024-11-27 20:07:54,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 33 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:07:54,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:07:54,391 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:54,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 20:07:54,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 20:07:54,591 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:07:54,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1054898158, now seen corresponding path program 21 times [2024-11-27 20:07:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158222420] [2024-11-27 20:07:54,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:07:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:54,599 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:07:54,599 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:07:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158222420] [2024-11-27 20:07:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158222420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:07:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762289366] [2024-11-27 20:07:54,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:07:54,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:54,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:54,903 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:07:54,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:07:54,964 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:07:54,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:07:54,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:07:54,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:07:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:55,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:07:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:07:56,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762289366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:07:56,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:07:56,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-27 20:07:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031954173] [2024-11-27 20:07:56,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:07:56,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:07:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:56,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:07:56,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:07:56,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:07:56,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 1933 transitions, 62511 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:07:56,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:07:56,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:07:56,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:06,283 INFO L124 PetriNetUnfolderBase]: 4176/7468 cut-off events. [2024-11-27 20:08:06,284 INFO L125 PetriNetUnfolderBase]: For 292331/292331 co-relation queries the response was YES. [2024-11-27 20:08:06,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98912 conditions, 7468 events. 4176/7468 cut-off events. For 292331/292331 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 52358 event pairs, 123 based on Foata normal form. 6/7474 useless extension candidates. Maximal degree in co-relation 98721. Up to 3926 conditions per place. [2024-11-27 20:08:06,412 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 759 selfloop transitions, 1337 changer transitions 17/2114 dead transitions. [2024-11-27 20:08:06,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 2114 transitions, 70624 flow [2024-11-27 20:08:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-27 20:08:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-27 20:08:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 385 transitions. [2024-11-27 20:08:06,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39855072463768115 [2024-11-27 20:08:06,414 INFO L175 Difference]: Start difference. First operand has 793 places, 1933 transitions, 62511 flow. Second operand 42 states and 385 transitions. [2024-11-27 20:08:06,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 2114 transitions, 70624 flow [2024-11-27 20:08:15,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 2114 transitions, 69303 flow, removed 48 selfloop flow, removed 22 redundant places. [2024-11-27 20:08:15,166 INFO L231 Difference]: Finished difference. Result has 824 places, 2009 transitions, 68919 flow [2024-11-27 20:08:15,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=61293, PETRI_DIFFERENCE_MINUEND_PLACES=767, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=68919, PETRI_PLACES=824, PETRI_TRANSITIONS=2009} [2024-11-27 20:08:15,169 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 799 predicate places. [2024-11-27 20:08:15,169 INFO L471 AbstractCegarLoop]: Abstraction has has 824 places, 2009 transitions, 68919 flow [2024-11-27 20:08:15,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:08:15,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:15,169 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:15,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 20:08:15,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 20:08:15,370 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:08:15,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1445751352, now seen corresponding path program 22 times [2024-11-27 20:08:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407302121] [2024-11-27 20:08:15,371 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:08:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:15,379 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:08:15,380 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:08:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:08:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:15,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407302121] [2024-11-27 20:08:15,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407302121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:15,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880850191] [2024-11-27 20:08:15,698 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:08:15,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:15,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:15,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:15,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:08:15,761 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:08:15,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:08:15,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:08:15,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:08:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:16,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:08:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880850191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:08:16,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:08:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-27 20:08:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955001724] [2024-11-27 20:08:16,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:08:16,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 20:08:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:16,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 20:08:16,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:08:16,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:08:16,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 2009 transitions, 68919 flow. Second operand has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 33 states have internal predecessors, (188), 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) [2024-11-27 20:08:16,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:16,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:08:16,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:08:31,835 INFO L124 PetriNetUnfolderBase]: 5079/9087 cut-off events. [2024-11-27 20:08:31,835 INFO L125 PetriNetUnfolderBase]: For 399086/399086 co-relation queries the response was YES. [2024-11-27 20:08:32,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127494 conditions, 9087 events. 5079/9087 cut-off events. For 399086/399086 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 66475 event pairs, 121 based on Foata normal form. 13/9100 useless extension candidates. Maximal degree in co-relation 127294. Up to 3054 conditions per place. [2024-11-27 20:08:32,047 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 734 selfloop transitions, 1925 changer transitions 29/2689 dead transitions. [2024-11-27 20:08:32,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 924 places, 2689 transitions, 93018 flow [2024-11-27 20:08:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-27 20:08:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2024-11-27 20:08:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 907 transitions. [2024-11-27 20:08:32,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37918060200668896 [2024-11-27 20:08:32,050 INFO L175 Difference]: Start difference. First operand has 824 places, 2009 transitions, 68919 flow. Second operand 104 states and 907 transitions. [2024-11-27 20:08:32,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 924 places, 2689 transitions, 93018 flow [2024-11-27 20:08:44,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 2689 transitions, 92577 flow, removed 42 selfloop flow, removed 20 redundant places. [2024-11-27 20:08:44,956 INFO L231 Difference]: Finished difference. Result has 939 places, 2458 transitions, 91706 flow [2024-11-27 20:08:44,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=68504, PETRI_DIFFERENCE_MINUEND_PLACES=801, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=91706, PETRI_PLACES=939, PETRI_TRANSITIONS=2458} [2024-11-27 20:08:44,958 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 914 predicate places. [2024-11-27 20:08:44,959 INFO L471 AbstractCegarLoop]: Abstraction has has 939 places, 2458 transitions, 91706 flow [2024-11-27 20:08:44,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 33 states have internal predecessors, (188), 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) [2024-11-27 20:08:44,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:08:44,959 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:44,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 20:08:45,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 20:08:45,160 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:08:45,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash -147558250, now seen corresponding path program 23 times [2024-11-27 20:08:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608470288] [2024-11-27 20:08:45,161 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:08:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:45,167 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:08:45,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:08:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:45,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:45,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608470288] [2024-11-27 20:08:45,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608470288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:45,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168431810] [2024-11-27 20:08:45,508 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:08:45,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:45,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:45,513 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:45,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:08:45,572 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:08:45,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:08:45,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:08:45,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:08:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:45,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:08:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:46,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168431810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:08:46,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:08:46,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-27 20:08:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932176135] [2024-11-27 20:08:46,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:08:46,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:08:46,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:46,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:08:46,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:08:46,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:08:46,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 2458 transitions, 91706 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:08:46,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:08:46,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:08:46,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:03,324 INFO L124 PetriNetUnfolderBase]: 5313/9527 cut-off events. [2024-11-27 20:09:03,325 INFO L125 PetriNetUnfolderBase]: For 502436/502436 co-relation queries the response was YES. [2024-11-27 20:09:03,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144357 conditions, 9527 events. 5313/9527 cut-off events. For 502436/502436 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 70061 event pairs, 141 based on Foata normal form. 5/9532 useless extension candidates. Maximal degree in co-relation 144127. Up to 4022 conditions per place. [2024-11-27 20:09:03,640 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 753 selfloop transitions, 1956 changer transitions 13/2723 dead transitions. [2024-11-27 20:09:03,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 2723 transitions, 104328 flow [2024-11-27 20:09:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 20:09:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-27 20:09:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 533 transitions. [2024-11-27 20:09:03,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38623188405797104 [2024-11-27 20:09:03,641 INFO L175 Difference]: Start difference. First operand has 939 places, 2458 transitions, 91706 flow. Second operand 60 states and 533 transitions. [2024-11-27 20:09:03,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 2723 transitions, 104328 flow [2024-11-27 20:09:22,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 2723 transitions, 103472 flow, removed 208 selfloop flow, removed 37 redundant places. [2024-11-27 20:09:23,043 INFO L231 Difference]: Finished difference. Result has 974 places, 2597 transitions, 103037 flow [2024-11-27 20:09:23,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=90916, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1819, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=103037, PETRI_PLACES=974, PETRI_TRANSITIONS=2597} [2024-11-27 20:09:23,046 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 949 predicate places. [2024-11-27 20:09:23,046 INFO L471 AbstractCegarLoop]: Abstraction has has 974 places, 2597 transitions, 103037 flow [2024-11-27 20:09:23,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:09:23,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:23,046 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:23,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 20:09:23,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 20:09:23,251 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:09:23,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1404020458, now seen corresponding path program 24 times [2024-11-27 20:09:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:23,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121902669] [2024-11-27 20:09:23,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:09:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:23,263 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:09:23,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:09:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:23,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121902669] [2024-11-27 20:09:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121902669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641958384] [2024-11-27 20:09:23,561 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 20:09:23,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:23,562 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:23,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:09:23,609 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-27 20:09:23,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:09:23,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:09:23,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:23,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:24,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641958384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:24,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:24,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-27 20:09:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783896591] [2024-11-27 20:09:24,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:24,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 20:09:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:24,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 20:09:24,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:09:24,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:09:24,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 2597 transitions, 103037 flow. Second operand has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 33 states have internal predecessors, (188), 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) [2024-11-27 20:09:24,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:24,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:09:24,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:09:39,710 INFO L124 PetriNetUnfolderBase]: 5322/9504 cut-off events. [2024-11-27 20:09:39,710 INFO L125 PetriNetUnfolderBase]: For 593719/593719 co-relation queries the response was YES. [2024-11-27 20:09:39,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152914 conditions, 9504 events. 5322/9504 cut-off events. For 593719/593719 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 69550 event pairs, 164 based on Foata normal form. 117/9621 useless extension candidates. Maximal degree in co-relation 152673. Up to 3930 conditions per place. [2024-11-27 20:09:39,938 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 1192 selfloop transitions, 1489 changer transitions 21/2703 dead transitions. [2024-11-27 20:09:39,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 2703 transitions, 110988 flow [2024-11-27 20:09:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-27 20:09:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-27 20:09:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 413 transitions. [2024-11-27 20:09:39,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39903381642512076 [2024-11-27 20:09:39,939 INFO L175 Difference]: Start difference. First operand has 974 places, 2597 transitions, 103037 flow. Second operand 45 states and 413 transitions. [2024-11-27 20:09:39,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 2703 transitions, 110988 flow [2024-11-27 20:09:58,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 947 places, 2703 transitions, 109988 flow, removed 133 selfloop flow, removed 42 redundant places. [2024-11-27 20:09:58,401 INFO L231 Difference]: Finished difference. Result has 960 places, 2571 transitions, 107966 flow [2024-11-27 20:09:58,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=98582, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1036, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=107966, PETRI_PLACES=960, PETRI_TRANSITIONS=2571} [2024-11-27 20:09:58,404 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 935 predicate places. [2024-11-27 20:09:58,404 INFO L471 AbstractCegarLoop]: Abstraction has has 960 places, 2571 transitions, 107966 flow [2024-11-27 20:09:58,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 33 states have internal predecessors, (188), 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) [2024-11-27 20:09:58,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:09:58,404 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:58,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:58,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:58,605 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:09:58,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -181157478, now seen corresponding path program 25 times [2024-11-27 20:09:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767161359] [2024-11-27 20:09:58,606 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:09:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:58,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:58,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767161359] [2024-11-27 20:09:58,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767161359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:58,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287566585] [2024-11-27 20:09:58,858 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:09:58,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:58,860 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:58,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 20:09:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:58,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:09:58,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:59,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:09:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:09:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287566585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:09:59,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:09:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-27 20:09:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747519754] [2024-11-27 20:09:59,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:09:59,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:09:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:59,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:09:59,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:09:59,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:09:59,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 2571 transitions, 107966 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:09:59,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:09:59,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:09:59,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:10:17,286 INFO L124 PetriNetUnfolderBase]: 5417/9665 cut-off events. [2024-11-27 20:10:17,286 INFO L125 PetriNetUnfolderBase]: For 646552/646552 co-relation queries the response was YES. [2024-11-27 20:10:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161201 conditions, 9665 events. 5417/9665 cut-off events. For 646552/646552 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 70657 event pairs, 154 based on Foata normal form. 2/9667 useless extension candidates. Maximal degree in co-relation 160960. Up to 5222 conditions per place. [2024-11-27 20:10:17,653 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 960 selfloop transitions, 1775 changer transitions 9/2745 dead transitions. [2024-11-27 20:10:17,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1005 places, 2745 transitions, 116614 flow [2024-11-27 20:10:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-27 20:10:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-27 20:10:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 450 transitions. [2024-11-27 20:10:17,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-11-27 20:10:17,655 INFO L175 Difference]: Start difference. First operand has 960 places, 2571 transitions, 107966 flow. Second operand 50 states and 450 transitions. [2024-11-27 20:10:17,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1005 places, 2745 transitions, 116614 flow [2024-11-27 20:10:40,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 984 places, 2745 transitions, 115836 flow, removed 121 selfloop flow, removed 21 redundant places. [2024-11-27 20:10:40,686 INFO L231 Difference]: Finished difference. Result has 995 places, 2643 transitions, 115604 flow [2024-11-27 20:10:40,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=107240, PETRI_DIFFERENCE_MINUEND_PLACES=935, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=115604, PETRI_PLACES=995, PETRI_TRANSITIONS=2643} [2024-11-27 20:10:40,688 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 970 predicate places. [2024-11-27 20:10:40,688 INFO L471 AbstractCegarLoop]: Abstraction has has 995 places, 2643 transitions, 115604 flow [2024-11-27 20:10:40,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:10:40,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:10:40,688 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:40,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:40,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 20:10:40,889 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-27 20:10:40,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1312585582, now seen corresponding path program 26 times [2024-11-27 20:10:40,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:40,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819688791] [2024-11-27 20:10:40,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:10:40,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:40,897 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:10:40,897 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:10:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819688791] [2024-11-27 20:10:41,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819688791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157177452] [2024-11-27 20:10:41,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:10:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:41,192 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:41,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_854ed192-6fd9-46cf-a7d2-2479450eb407/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 20:10:41,240 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:10:41,240 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:10:41,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:10:41,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:41,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:10:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157177452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:42,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:42,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-27 20:10:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686948438] [2024-11-27 20:10:42,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:42,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 20:10:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:42,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 20:10:42,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:10:42,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-27 20:10:42,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 2643 transitions, 115604 flow. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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) [2024-11-27 20:10:42,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:10:42,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-27 20:10:42,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand