./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI --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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:10,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:10,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:28:10,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:10,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:10,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:10,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:10,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:10,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:10,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:10,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:10,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:10,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:10,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:10,560 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:10,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:10,561 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:10,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:10,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:10,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:10,563 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:28:10,564 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:28:10,564 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:28:10,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:10,565 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:28:10,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:28:10,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:10,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:10,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:10,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:10,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:10,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:10,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:10,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:10,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:10,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:28:10,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:28:10,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:10,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:10,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:10,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:10,572 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2023-11-24 21:28:10,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:10,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:10,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:10,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:10,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:10,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread/triangular-1.i [2023-11-24 21:28:14,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:14,437 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:14,438 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/sv-benchmarks/c/pthread/triangular-1.i [2023-11-24 21:28:14,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/data/5a1c74ee4/dc5ce4aee53b48c492cea631fa8e566a/FLAGfa34b751d [2023-11-24 21:28:14,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/data/5a1c74ee4/dc5ce4aee53b48c492cea631fa8e566a [2023-11-24 21:28:14,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:14,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:14,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:14,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:14,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:14,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:14" (1/1) ... [2023-11-24 21:28:14,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b807d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:14, skipping insertion in model container [2023-11-24 21:28:14,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:14" (1/1) ... [2023-11-24 21:28:14,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:14,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:14,985 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:28:15,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:15,113 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:28:15,113 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:28:15,121 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:28:15,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15 WrapperNode [2023-11-24 21:28:15,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:15,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:15,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:28:15,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:28:15,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,200 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-24 21:28:15,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:15,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:28:15,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:28:15,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:28:15,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,253 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 21:28:15,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:28:15,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:28:15,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:28:15,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:28:15,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (1/1) ... [2023-11-24 21:28:15,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:15,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:15,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:28:15,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:28:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-24 21:28:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-24 21:28:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-24 21:28:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-24 21:28:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:28:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:28:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:28:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:28:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:28:15,398 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:28:15,599 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:28:15,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:28:15,805 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:28:15,956 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:28:15,957 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:28:15,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:15 BoogieIcfgContainer [2023-11-24 21:28:15,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:28:15,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:28:15,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:28:15,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:28:15,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:28:14" (1/3) ... [2023-11-24 21:28:15,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2afd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:15, skipping insertion in model container [2023-11-24 21:28:15,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:15" (2/3) ... [2023-11-24 21:28:15,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2afd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:15, skipping insertion in model container [2023-11-24 21:28:15,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:15" (3/3) ... [2023-11-24 21:28:15,968 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-24 21:28:15,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:28:15,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 21:28:15,992 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:28:16,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:28:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-24 21:28:16,176 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-24 21:28:16,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:28:16,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-24 21:28:16,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-24 21:28:16,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-24 21:28:16,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:28:16,204 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@21807401, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:28:16,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-24 21:28:16,216 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:28:16,217 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:28:16,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:28:16,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:16,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:28:16,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:16,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 6737, now seen corresponding path program 1 times [2023-11-24 21:28:16,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:16,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949155198] [2023-11-24 21:28:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:16,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:16,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949155198] [2023-11-24 21:28:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949155198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:28:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345295734] [2023-11-24 21:28:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:16,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:16,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-24 21:28:16,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:16,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:16,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-24 21:28:16,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:16,832 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-24 21:28:16,833 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:28:16,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-24 21:28:16,839 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-24 21:28:16,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-24 21:28:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-24 21:28:16,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-24 21:28:16,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-24 21:28:16,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-24 21:28:16,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:16,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-24 21:28:16,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:16,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:16,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:16,867 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-24 21:28:16,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-24 21:28:16,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:16,873 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-24 21:28:16,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-24 21:28:16,880 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-24 21:28:16,880 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-24 21:28:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:16,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:16,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:28:16,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:28:16,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:16,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash 6738, now seen corresponding path program 1 times [2023-11-24 21:28:16,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:16,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678114252] [2023-11-24 21:28:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:16,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:17,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:17,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678114252] [2023-11-24 21:28:17,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678114252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:17,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:17,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:28:17,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038848483] [2023-11-24 21:28:17,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:17,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:17,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:28:17,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:17,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:28:17,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:17,228 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-24 21:28:17,229 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:28:17,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-24 21:28:17,232 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-24 21:28:17,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-24 21:28:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:17,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 21:28:17,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-24 21:28:17,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 21:28:17,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 21:28:17,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:17,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 21:28:17,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,239 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-24 21:28:17,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-24 21:28:17,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:17,242 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-24 21:28:17,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-24 21:28:17,243 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-24 21:28:17,244 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-24 21:28:17,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:17,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:28:17,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:28:17,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash 200868327, now seen corresponding path program 1 times [2023-11-24 21:28:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234793030] [2023-11-24 21:28:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:17,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:17,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234793030] [2023-11-24 21:28:17,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234793030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:17,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:17,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:28:17,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467883311] [2023-11-24 21:28:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:17,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:17,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:28:17,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:17,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:28:17,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:17,423 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-24 21:28:17,424 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:28:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-24 21:28:17,427 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 21:28:17,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-24 21:28:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 21:28:17,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-24 21:28:17,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 21:28:17,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 21:28:17,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:17,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 21:28:17,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,433 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-24 21:28:17,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-24 21:28:17,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:17,436 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-24 21:28:17,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-24 21:28:17,437 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-24 21:28:17,437 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-24 21:28:17,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:17,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:28:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:28:17,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:17,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 200868326, now seen corresponding path program 1 times [2023-11-24 21:28:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371591063] [2023-11-24 21:28:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:17,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371591063] [2023-11-24 21:28:17,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371591063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:17,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:28:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677309899] [2023-11-24 21:28:17,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:17,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:17,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:17,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-24 21:28:17,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:17,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-24 21:28:17,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:17,581 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-24 21:28:17,582 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:28:17,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-24 21:28:17,584 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-24 21:28:17,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-24 21:28:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-24 21:28:17,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-24 21:28:17,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-24 21:28:17,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-24 21:28:17,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:17,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-24 21:28:17,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,590 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-24 21:28:17,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-24 21:28:17,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:17,592 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-24 21:28:17,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-24 21:28:17,594 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-24 21:28:17,594 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-24 21:28:17,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:17,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:17,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:28:17,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:17,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1605654404, now seen corresponding path program 1 times [2023-11-24 21:28:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:17,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611443556] [2023-11-24 21:28:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:17,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611443556] [2023-11-24 21:28:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611443556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:17,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853910765] [2023-11-24 21:28:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:17,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:28:17,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2023-11-24 21:28:17,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:17,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:28:17,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:17,997 INFO L124 PetriNetUnfolderBase]: 70/154 cut-off events. [2023-11-24 21:28:18,002 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:28:18,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 154 events. 70/154 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 550 event pairs, 32 based on Foata normal form. 9/148 useless extension candidates. Maximal degree in co-relation 277. Up to 86 conditions per place. [2023-11-24 21:28:18,007 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 11 selfloop transitions, 1 changer transitions 7/30 dead transitions. [2023-11-24 21:28:18,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 106 flow [2023-11-24 21:28:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:28:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-24 21:28:18,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-24 21:28:18,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-24 21:28:18,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-24 21:28:18,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:18,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-24 21:28:18,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,020 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 88 transitions. [2023-11-24 21:28:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 106 flow [2023-11-24 21:28:18,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:18,023 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 52 flow [2023-11-24 21:28:18,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-24 21:28:18,027 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-24 21:28:18,027 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 52 flow [2023-11-24 21:28:18,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2023-11-24 21:28:18,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:18,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:18,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:28:18,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:18,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1605653309, now seen corresponding path program 1 times [2023-11-24 21:28:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145867789] [2023-11-24 21:28:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145867789] [2023-11-24 21:28:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145867789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:18,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491257728] [2023-11-24 21:28:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:18,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:18,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:18,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:18,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:18,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:18,471 INFO L124 PetriNetUnfolderBase]: 273/483 cut-off events. [2023-11-24 21:28:18,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:28:18,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 483 events. 273/483 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1906 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 917. Up to 181 conditions per place. [2023-11-24 21:28:18,476 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 4 changer transitions 20/55 dead transitions. [2023-11-24 21:28:18,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 214 flow [2023-11-24 21:28:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:28:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:28:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2023-11-24 21:28:18,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-24 21:28:18,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2023-11-24 21:28:18,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2023-11-24 21:28:18,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:18,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2023-11-24 21:28:18,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,483 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 6 states and 129 transitions. [2023-11-24 21:28:18,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 214 flow [2023-11-24 21:28:18,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:28:18,485 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 78 flow [2023-11-24 21:28:18,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-24 21:28:18,486 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-24 21:28:18,487 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 78 flow [2023-11-24 21:28:18,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:18,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:18,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:28:18,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:18,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -204762607, now seen corresponding path program 1 times [2023-11-24 21:28:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:18,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125457607] [2023-11-24 21:28:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:18,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125457607] [2023-11-24 21:28:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125457607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:18,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:18,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:18,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888942243] [2023-11-24 21:28:18,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:18,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:28:18,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:18,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:18,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:18,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:18,912 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2023-11-24 21:28:18,912 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2023-11-24 21:28:18,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 711 events. 382/711 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3123 event pairs, 65 based on Foata normal form. 33/743 useless extension candidates. Maximal degree in co-relation 1598. Up to 246 conditions per place. [2023-11-24 21:28:18,920 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 9 changer transitions 20/81 dead transitions. [2023-11-24 21:28:18,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 81 transitions, 386 flow [2023-11-24 21:28:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:28:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:28:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2023-11-24 21:28:18,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-24 21:28:18,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 189 transitions. [2023-11-24 21:28:18,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 189 transitions. [2023-11-24 21:28:18,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:18,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 189 transitions. [2023-11-24 21:28:18,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.0) internal successors, (189), 9 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) [2023-11-24 21:28:18,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,933 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,933 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 78 flow. Second operand 9 states and 189 transitions. [2023-11-24 21:28:18,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 81 transitions, 386 flow [2023-11-24 21:28:18,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 81 transitions, 370 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:18,940 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 163 flow [2023-11-24 21:28:18,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-11-24 21:28:18,941 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-24 21:28:18,941 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 163 flow [2023-11-24 21:28:18,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:18,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:18,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:18,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:28:18,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:18,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1564829837, now seen corresponding path program 2 times [2023-11-24 21:28:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:18,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305212908] [2023-11-24 21:28:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:19,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:19,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305212908] [2023-11-24 21:28:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305212908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:19,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:28:19,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487388280] [2023-11-24 21:28:19,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:19,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:28:19,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:28:19,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:28:19,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:19,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:19,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:19,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:19,423 INFO L124 PetriNetUnfolderBase]: 373/699 cut-off events. [2023-11-24 21:28:19,424 INFO L125 PetriNetUnfolderBase]: For 1121/1133 co-relation queries the response was YES. [2023-11-24 21:28:19,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 699 events. 373/699 cut-off events. For 1121/1133 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3080 event pairs, 80 based on Foata normal form. 48/746 useless extension candidates. Maximal degree in co-relation 1949. Up to 237 conditions per place. [2023-11-24 21:28:19,431 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 42 selfloop transitions, 15 changer transitions 32/95 dead transitions. [2023-11-24 21:28:19,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 95 transitions, 585 flow [2023-11-24 21:28:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:28:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:28:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2023-11-24 21:28:19,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2023-11-24 21:28:19,434 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 206 transitions. [2023-11-24 21:28:19,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 206 transitions. [2023-11-24 21:28:19,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:19,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 206 transitions. [2023-11-24 21:28:19,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,437 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,437 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 163 flow. Second operand 10 states and 206 transitions. [2023-11-24 21:28:19,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 95 transitions, 585 flow [2023-11-24 21:28:19,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 575 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:19,446 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 277 flow [2023-11-24 21:28:19,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=277, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-24 21:28:19,447 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-11-24 21:28:19,447 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 277 flow [2023-11-24 21:28:19,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:19,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:19,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:28:19,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:19,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1757896090, now seen corresponding path program 1 times [2023-11-24 21:28:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:19,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443529298] [2023-11-24 21:28:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:19,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:19,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443529298] [2023-11-24 21:28:19,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443529298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:19,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:28:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56240419] [2023-11-24 21:28:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:19,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:19,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:19,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:19,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:19,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:19,967 INFO L124 PetriNetUnfolderBase]: 508/942 cut-off events. [2023-11-24 21:28:19,967 INFO L125 PetriNetUnfolderBase]: For 3595/3607 co-relation queries the response was YES. [2023-11-24 21:28:19,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145 conditions, 942 events. 508/942 cut-off events. For 3595/3607 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4360 event pairs, 53 based on Foata normal form. 39/978 useless extension candidates. Maximal degree in co-relation 3120. Up to 238 conditions per place. [2023-11-24 21:28:19,978 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 56 selfloop transitions, 21 changer transitions 23/106 dead transitions. [2023-11-24 21:28:19,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 781 flow [2023-11-24 21:28:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:28:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:28:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-24 21:28:19,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2023-11-24 21:28:19,980 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-24 21:28:19,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-24 21:28:19,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:19,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-24 21:28:19,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,984 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:19,984 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 277 flow. Second operand 11 states and 229 transitions. [2023-11-24 21:28:19,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 781 flow [2023-11-24 21:28:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 716 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-11-24 21:28:20,000 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 385 flow [2023-11-24 21:28:20,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=385, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-24 21:28:20,002 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-24 21:28:20,002 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 385 flow [2023-11-24 21:28:20,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:20,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:20,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:28:20,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:20,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1152289066, now seen corresponding path program 2 times [2023-11-24 21:28:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247346793] [2023-11-24 21:28:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:20,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247346793] [2023-11-24 21:28:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247346793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:28:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190872831] [2023-11-24 21:28:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:20,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:20,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:20,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:20,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:20,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:20,479 INFO L124 PetriNetUnfolderBase]: 454/861 cut-off events. [2023-11-24 21:28:20,480 INFO L125 PetriNetUnfolderBase]: For 5137/5149 co-relation queries the response was YES. [2023-11-24 21:28:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 861 events. 454/861 cut-off events. For 5137/5149 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3970 event pairs, 71 based on Foata normal form. 57/915 useless extension candidates. Maximal degree in co-relation 3210. Up to 226 conditions per place. [2023-11-24 21:28:20,490 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 44 selfloop transitions, 21 changer transitions 31/102 dead transitions. [2023-11-24 21:28:20,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 102 transitions, 917 flow [2023-11-24 21:28:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:28:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:28:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2023-11-24 21:28:20,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2023-11-24 21:28:20,492 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 205 transitions. [2023-11-24 21:28:20,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 205 transitions. [2023-11-24 21:28:20,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:20,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 205 transitions. [2023-11-24 21:28:20,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:20,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:20,495 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:20,495 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 385 flow. Second operand 10 states and 205 transitions. [2023-11-24 21:28:20,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 102 transitions, 917 flow [2023-11-24 21:28:20,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 842 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-24 21:28:20,515 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 441 flow [2023-11-24 21:28:20,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-24 21:28:20,516 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-11-24 21:28:20,516 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 441 flow [2023-11-24 21:28:20,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:20,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:20,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:20,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:28:20,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:20,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash 427582615, now seen corresponding path program 1 times [2023-11-24 21:28:20,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:20,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020259233] [2023-11-24 21:28:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:20,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:20,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020259233] [2023-11-24 21:28:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020259233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368180374] [2023-11-24 21:28:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:20,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:20,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:28:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:20,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:28:20,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:20,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368180374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:21,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-24 21:28:21,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032565034] [2023-11-24 21:28:21,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:21,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:28:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:28:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:28:21,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:21,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 441 flow. Second operand has 14 states, 14 states have (on average 15.071428571428571) internal successors, (211), 14 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:21,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:21,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:21,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:21,773 INFO L124 PetriNetUnfolderBase]: 652/1200 cut-off events. [2023-11-24 21:28:21,774 INFO L125 PetriNetUnfolderBase]: For 9432/9444 co-relation queries the response was YES. [2023-11-24 21:28:21,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4865 conditions, 1200 events. 652/1200 cut-off events. For 9432/9444 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5296 event pairs, 59 based on Foata normal form. 57/1254 useless extension candidates. Maximal degree in co-relation 4833. Up to 198 conditions per place. [2023-11-24 21:28:21,789 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 66 selfloop transitions, 36 changer transitions 56/164 dead transitions. [2023-11-24 21:28:21,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 164 transitions, 1531 flow [2023-11-24 21:28:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 21:28:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-24 21:28:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 388 transitions. [2023-11-24 21:28:21,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5834586466165413 [2023-11-24 21:28:21,792 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 388 transitions. [2023-11-24 21:28:21,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 388 transitions. [2023-11-24 21:28:21,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:21,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 388 transitions. [2023-11-24 21:28:21,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 20.42105263157895) internal successors, (388), 19 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:21,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:21,798 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:21,798 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 441 flow. Second operand 19 states and 388 transitions. [2023-11-24 21:28:21,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 164 transitions, 1531 flow [2023-11-24 21:28:21,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 164 transitions, 1396 flow, removed 50 selfloop flow, removed 9 redundant places. [2023-11-24 21:28:21,820 INFO L231 Difference]: Finished difference. Result has 88 places, 66 transitions, 766 flow [2023-11-24 21:28:21,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=766, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2023-11-24 21:28:21,821 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-11-24 21:28:21,821 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 766 flow [2023-11-24 21:28:21,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.071428571428571) internal successors, (211), 14 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:21,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:21,822 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:21,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:22,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:22,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:22,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash 465565817, now seen corresponding path program 1 times [2023-11-24 21:28:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:22,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607382416] [2023-11-24 21:28:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:28:22,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607382416] [2023-11-24 21:28:22,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607382416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054103771] [2023-11-24 21:28:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:22,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:22,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:22,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:28:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:22,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:28:22,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:28:22,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:28:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054103771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:22,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:22,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-24 21:28:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300331527] [2023-11-24 21:28:22,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:22,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 21:28:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:22,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 21:28:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:28:22,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:22,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 766 flow. Second operand has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:22,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:22,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:22,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:23,591 INFO L124 PetriNetUnfolderBase]: 850/1611 cut-off events. [2023-11-24 21:28:23,592 INFO L125 PetriNetUnfolderBase]: For 18935/18947 co-relation queries the response was YES. [2023-11-24 21:28:23,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 1611 events. 850/1611 cut-off events. For 18935/18947 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7246 event pairs, 215 based on Foata normal form. 93/1703 useless extension candidates. Maximal degree in co-relation 7278. Up to 738 conditions per place. [2023-11-24 21:28:23,615 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 94 selfloop transitions, 27 changer transitions 89/216 dead transitions. [2023-11-24 21:28:23,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 216 transitions, 2436 flow [2023-11-24 21:28:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-24 21:28:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-24 21:28:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 501 transitions. [2023-11-24 21:28:23,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725714285714286 [2023-11-24 21:28:23,619 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 501 transitions. [2023-11-24 21:28:23,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 501 transitions. [2023-11-24 21:28:23,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:23,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 501 transitions. [2023-11-24 21:28:23,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.04) internal successors, (501), 25 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,625 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,625 INFO L175 Difference]: Start difference. First operand has 88 places, 66 transitions, 766 flow. Second operand 25 states and 501 transitions. [2023-11-24 21:28:23,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 216 transitions, 2436 flow [2023-11-24 21:28:23,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 216 transitions, 1929 flow, removed 241 selfloop flow, removed 10 redundant places. [2023-11-24 21:28:23,707 INFO L231 Difference]: Finished difference. Result has 116 places, 80 transitions, 862 flow [2023-11-24 21:28:23,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=862, PETRI_PLACES=116, PETRI_TRANSITIONS=80} [2023-11-24 21:28:23,708 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 80 predicate places. [2023-11-24 21:28:23,708 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 80 transitions, 862 flow [2023-11-24 21:28:23,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:23,709 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:23,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:23,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 21:28:23,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:23,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1043555207, now seen corresponding path program 2 times [2023-11-24 21:28:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24293957] [2023-11-24 21:28:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:28:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24293957] [2023-11-24 21:28:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24293957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647848048] [2023-11-24 21:28:24,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:28:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:24,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:24,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:28:24,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:28:24,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:28:24,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:28:24,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:28:24,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:28:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647848048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:24,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:24,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-24 21:28:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896779881] [2023-11-24 21:28:24,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 21:28:24,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:24,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 21:28:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:28:24,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:24,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 80 transitions, 862 flow. Second operand has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:24,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:24,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:24,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:25,867 INFO L124 PetriNetUnfolderBase]: 1444/2754 cut-off events. [2023-11-24 21:28:25,867 INFO L125 PetriNetUnfolderBase]: For 62746/62758 co-relation queries the response was YES. [2023-11-24 21:28:25,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14424 conditions, 2754 events. 1444/2754 cut-off events. For 62746/62758 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14907 event pairs, 136 based on Foata normal form. 93/2846 useless extension candidates. Maximal degree in co-relation 14373. Up to 492 conditions per place. [2023-11-24 21:28:25,914 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 127 selfloop transitions, 81 changer transitions 91/305 dead transitions. [2023-11-24 21:28:25,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 305 transitions, 3900 flow [2023-11-24 21:28:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 21:28:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-24 21:28:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 649 transitions. [2023-11-24 21:28:25,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794642857142858 [2023-11-24 21:28:25,921 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 649 transitions. [2023-11-24 21:28:25,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 649 transitions. [2023-11-24 21:28:25,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:25,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 649 transitions. [2023-11-24 21:28:25,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 20.28125) internal successors, (649), 32 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:25,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 35.0) internal successors, (1155), 33 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:25,978 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 35.0) internal successors, (1155), 33 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:25,978 INFO L175 Difference]: Start difference. First operand has 116 places, 80 transitions, 862 flow. Second operand 32 states and 649 transitions. [2023-11-24 21:28:25,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 305 transitions, 3900 flow [2023-11-24 21:28:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 305 transitions, 3239 flow, removed 321 selfloop flow, removed 13 redundant places. [2023-11-24 21:28:26,106 INFO L231 Difference]: Finished difference. Result has 148 places, 123 transitions, 1649 flow [2023-11-24 21:28:26,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1649, PETRI_PLACES=148, PETRI_TRANSITIONS=123} [2023-11-24 21:28:26,108 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 112 predicate places. [2023-11-24 21:28:26,108 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 123 transitions, 1649 flow [2023-11-24 21:28:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.352941176470589) internal successors, (261), 17 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:26,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:26,109 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:26,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 21:28:26,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 21:28:26,314 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:26,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2005901211, now seen corresponding path program 3 times [2023-11-24 21:28:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:26,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684367110] [2023-11-24 21:28:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:28:26,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684367110] [2023-11-24 21:28:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684367110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249550527] [2023-11-24 21:28:26,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:28:26,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:26,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:26,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:28:26,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 21:28:26,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:28:26,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:28:26,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:28:26,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:28:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249550527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:26,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:26,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-24 21:28:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26403401] [2023-11-24 21:28:26,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:26,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-24 21:28:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-24 21:28:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-11-24 21:28:26,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:26,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 123 transitions, 1649 flow. Second operand has 18 states, 18 states have (on average 15.277777777777779) internal successors, (275), 18 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:26,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:26,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:26,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:28,631 INFO L124 PetriNetUnfolderBase]: 1831/3463 cut-off events. [2023-11-24 21:28:28,631 INFO L125 PetriNetUnfolderBase]: For 140789/140795 co-relation queries the response was YES. [2023-11-24 21:28:28,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21225 conditions, 3463 events. 1831/3463 cut-off events. For 140789/140795 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19546 event pairs, 58 based on Foata normal form. 123/3585 useless extension candidates. Maximal degree in co-relation 21159. Up to 648 conditions per place. [2023-11-24 21:28:28,708 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 124 selfloop transitions, 122 changer transitions 115/367 dead transitions. [2023-11-24 21:28:28,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 367 transitions, 5784 flow [2023-11-24 21:28:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 21:28:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-24 21:28:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 731 transitions. [2023-11-24 21:28:28,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801587301587302 [2023-11-24 21:28:28,712 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 731 transitions. [2023-11-24 21:28:28,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 731 transitions. [2023-11-24 21:28:28,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:28,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 731 transitions. [2023-11-24 21:28:28,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 20.305555555555557) internal successors, (731), 36 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:28,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 35.0) internal successors, (1295), 37 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:28,720 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 35.0) internal successors, (1295), 37 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:28,720 INFO L175 Difference]: Start difference. First operand has 148 places, 123 transitions, 1649 flow. Second operand 36 states and 731 transitions. [2023-11-24 21:28:28,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 367 transitions, 5784 flow [2023-11-24 21:28:29,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 367 transitions, 4933 flow, removed 409 selfloop flow, removed 15 redundant places. [2023-11-24 21:28:29,178 INFO L231 Difference]: Finished difference. Result has 182 places, 158 transitions, 2483 flow [2023-11-24 21:28:29,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2483, PETRI_PLACES=182, PETRI_TRANSITIONS=158} [2023-11-24 21:28:29,179 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 146 predicate places. [2023-11-24 21:28:29,180 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 158 transitions, 2483 flow [2023-11-24 21:28:29,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.277777777777779) internal successors, (275), 18 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:29,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:29,183 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:29,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:29,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 21:28:29,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:29,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1967854298, now seen corresponding path program 4 times [2023-11-24 21:28:29,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937823051] [2023-11-24 21:28:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937823051] [2023-11-24 21:28:29,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937823051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:29,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305877206] [2023-11-24 21:28:29,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 21:28:29,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:29,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:29,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:29,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:28:29,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 21:28:29,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:28:29,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:28:29,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:29,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305877206] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:30,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:30,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2023-11-24 21:28:30,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73563275] [2023-11-24 21:28:30,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:30,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-24 21:28:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-24 21:28:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:28:30,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-24 21:28:30,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 158 transitions, 2483 flow. Second operand has 25 states, 25 states have (on average 15.08) internal successors, (377), 25 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:30,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:30,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-24 21:28:30,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:32,099 INFO L124 PetriNetUnfolderBase]: 2038/3866 cut-off events. [2023-11-24 21:28:32,099 INFO L125 PetriNetUnfolderBase]: For 205075/205081 co-relation queries the response was YES. [2023-11-24 21:28:32,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25671 conditions, 3866 events. 2038/3866 cut-off events. For 205075/205081 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21900 event pairs, 125 based on Foata normal form. 42/3905 useless extension candidates. Maximal degree in co-relation 25593. Up to 726 conditions per place. [2023-11-24 21:28:32,204 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 127 selfloop transitions, 132 changer transitions 63/328 dead transitions. [2023-11-24 21:28:32,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 328 transitions, 5967 flow [2023-11-24 21:28:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 21:28:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-24 21:28:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 546 transitions. [2023-11-24 21:28:32,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2023-11-24 21:28:32,207 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 546 transitions. [2023-11-24 21:28:32,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 546 transitions. [2023-11-24 21:28:32,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:32,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 546 transitions. [2023-11-24 21:28:32,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 20.22222222222222) internal successors, (546), 27 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:32,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:32,214 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:32,214 INFO L175 Difference]: Start difference. First operand has 182 places, 158 transitions, 2483 flow. Second operand 27 states and 546 transitions. [2023-11-24 21:28:32,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 328 transitions, 5967 flow [2023-11-24 21:28:32,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 328 transitions, 4835 flow, removed 533 selfloop flow, removed 20 redundant places. [2023-11-24 21:28:32,877 INFO L231 Difference]: Finished difference. Result has 191 places, 188 transitions, 3003 flow [2023-11-24 21:28:32,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3003, PETRI_PLACES=191, PETRI_TRANSITIONS=188} [2023-11-24 21:28:32,878 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 155 predicate places. [2023-11-24 21:28:32,879 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 188 transitions, 3003 flow [2023-11-24 21:28:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.08) internal successors, (377), 25 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:32,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:32,879 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:32,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:33,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 21:28:33,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:33,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:33,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1297728787, now seen corresponding path program 5 times [2023-11-24 21:28:33,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:33,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131940046] [2023-11-24 21:28:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:33,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 53 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:33,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:33,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131940046] [2023-11-24 21:28:33,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131940046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213577934] [2023-11-24 21:28:33,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-24 21:28:33,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:33,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:33,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:33,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 21:28:33,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-24 21:28:33,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:28:33,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:28:33,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:33,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:33,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213577934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:33,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:28:33,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-24 21:28:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728416807] [2023-11-24 21:28:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:28:33,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:28:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:28:33,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:28:33,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 188 transitions, 3003 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:33,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:33,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:28:33,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:35,435 INFO L124 PetriNetUnfolderBase]: 3462/7013 cut-off events. [2023-11-24 21:28:35,436 INFO L125 PetriNetUnfolderBase]: For 216060/216629 co-relation queries the response was YES. [2023-11-24 21:28:35,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32984 conditions, 7013 events. 3462/7013 cut-off events. For 216060/216629 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 53950 event pairs, 217 based on Foata normal form. 166/6474 useless extension candidates. Maximal degree in co-relation 32903. Up to 1312 conditions per place. [2023-11-24 21:28:35,549 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 49 selfloop transitions, 12 changer transitions 96/229 dead transitions. [2023-11-24 21:28:35,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 229 transitions, 3010 flow [2023-11-24 21:28:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:28:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2023-11-24 21:28:35,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7178571428571429 [2023-11-24 21:28:35,554 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 201 transitions. [2023-11-24 21:28:35,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 201 transitions. [2023-11-24 21:28:35,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:35,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 201 transitions. [2023-11-24 21:28:35,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:35,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:35,558 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:35,560 INFO L175 Difference]: Start difference. First operand has 191 places, 188 transitions, 3003 flow. Second operand 8 states and 201 transitions. [2023-11-24 21:28:35,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 229 transitions, 3010 flow [2023-11-24 21:28:36,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 229 transitions, 2603 flow, removed 172 selfloop flow, removed 13 redundant places. [2023-11-24 21:28:36,460 INFO L231 Difference]: Finished difference. Result has 181 places, 94 transitions, 1033 flow [2023-11-24 21:28:36,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1033, PETRI_PLACES=181, PETRI_TRANSITIONS=94} [2023-11-24 21:28:36,461 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 145 predicate places. [2023-11-24 21:28:36,461 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 94 transitions, 1033 flow [2023-11-24 21:28:36,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:36,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:36,462 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:36,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 21:28:36,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:28:36,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash 166394544, now seen corresponding path program 6 times [2023-11-24 21:28:36,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:36,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487256205] [2023-11-24 21:28:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:36,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 45 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:36,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487256205] [2023-11-24 21:28:36,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487256205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:36,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016192994] [2023-11-24 21:28:36,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-24 21:28:36,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:36,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:36,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 21:28:36,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-24 21:28:36,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:28:36,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:28:36,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:37,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:28:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016192994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:37,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:28:37,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-24 21:28:37,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880195963] [2023-11-24 21:28:37,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:37,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:28:37,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:28:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:28:37,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-24 21:28:37,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 94 transitions, 1033 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:37,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:37,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-24 21:28:37,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:38,792 INFO L124 PetriNetUnfolderBase]: 4280/7814 cut-off events. [2023-11-24 21:28:38,792 INFO L125 PetriNetUnfolderBase]: For 82541/82908 co-relation queries the response was YES. [2023-11-24 21:28:38,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29963 conditions, 7814 events. 4280/7814 cut-off events. For 82541/82908 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 56804 event pairs, 183 based on Foata normal form. 79/7168 useless extension candidates. Maximal degree in co-relation 29893. Up to 1424 conditions per place. [2023-11-24 21:28:38,902 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 0 selfloop transitions, 0 changer transitions 178/178 dead transitions. [2023-11-24 21:28:38,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 178 transitions, 1515 flow [2023-11-24 21:28:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:28:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:28:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2023-11-24 21:28:38,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2023-11-24 21:28:38,904 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 186 transitions. [2023-11-24 21:28:38,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 186 transitions. [2023-11-24 21:28:38,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:38,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 186 transitions. [2023-11-24 21:28:38,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:38,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:38,908 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:38,908 INFO L175 Difference]: Start difference. First operand has 181 places, 94 transitions, 1033 flow. Second operand 8 states and 186 transitions. [2023-11-24 21:28:38,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 178 transitions, 1515 flow [2023-11-24 21:28:39,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 178 transitions, 1205 flow, removed 41 selfloop flow, removed 48 redundant places. [2023-11-24 21:28:39,330 INFO L231 Difference]: Finished difference. Result has 115 places, 0 transitions, 0 flow [2023-11-24 21:28:39,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=115, PETRI_TRANSITIONS=0} [2023-11-24 21:28:39,331 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-11-24 21:28:39,331 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 0 transitions, 0 flow [2023-11-24 21:28:39,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:39,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-24 21:28:39,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-24 21:28:39,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-24 21:28:39,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-24 21:28:39,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-24 21:28:39,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-24 21:28:39,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-24 21:28:39,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-24 21:28:39,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-24 21:28:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-24 21:28:39,544 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:39,548 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:28:39,548 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:28:39,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:28:39 BasicIcfg [2023-11-24 21:28:39,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:28:39,554 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:28:39,554 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:28:39,555 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:28:39,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:15" (3/4) ... [2023-11-24 21:28:39,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:28:39,563 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-24 21:28:39,563 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-24 21:28:39,569 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-24 21:28:39,570 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-24 21:28:39,570 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 21:28:39,570 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:28:39,672 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:28:39,672 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:28:39,672 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:28:39,673 INFO L158 Benchmark]: Toolchain (without parser) took 25186.73ms. Allocated memory was 180.4MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 131.9MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 348.2MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,674 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:28:39,674 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.00ms. Allocated memory is still 180.4MB. Free memory was 131.9MB in the beginning and 111.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.84ms. Allocated memory is still 180.4MB. Free memory was 111.7MB in the beginning and 110.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,675 INFO L158 Benchmark]: Boogie Preprocessor took 92.00ms. Allocated memory is still 180.4MB. Free memory was 110.1MB in the beginning and 107.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,675 INFO L158 Benchmark]: RCFGBuilder took 662.65ms. Allocated memory is still 180.4MB. Free memory was 107.5MB in the beginning and 86.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,676 INFO L158 Benchmark]: TraceAbstraction took 23593.62ms. Allocated memory was 180.4MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 86.4MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 480.4MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,677 INFO L158 Benchmark]: Witness Printer took 118.40ms. Allocated memory is still 2.3GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:28:39,681 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.00ms. Allocated memory is still 180.4MB. Free memory was 131.9MB in the beginning and 111.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.84ms. Allocated memory is still 180.4MB. Free memory was 111.7MB in the beginning and 110.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.00ms. Allocated memory is still 180.4MB. Free memory was 110.1MB in the beginning and 107.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 662.65ms. Allocated memory is still 180.4MB. Free memory was 107.5MB in the beginning and 86.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23593.62ms. Allocated memory was 180.4MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 86.4MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 480.4MB. Max. memory is 16.1GB. * Witness Printer took 118.40ms. Allocated memory is still 2.3GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 44 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.4s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1909 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1838 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3365 IncrementalHoareTripleChecker+Invalid, 3479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 21 mSDtfsCounter, 3365 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 606 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3003occurred in iteration=15, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 705 ConstructedInterpolants, 0 QuantifiedInterpolants, 2623 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1030 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 29 InterpolantComputations, 12 PerfectInterpolantSequences, 248/546 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:28:39,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f462b68-2257-4087-b6a6-5ab18b84386c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE