./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --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_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/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_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/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_76e74f96-24e4-49ea-b973-daa34dd9a318/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 69a3560a89bb35c8c81d2aea87ba8845d78238fa641b06d2b772cf5882c5c8f6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:02:06,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:02:06,534 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:02:06,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:02:06,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:02:06,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:02:06,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:02:06,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:02:06,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:02:06,576 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:02:06,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:02:06,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:02:06,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:02:06,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:02:06,580 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:02:06,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:02:06,581 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:02:06,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:02:06,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:02:06,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:02:06,584 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:02:06,584 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:02:06,585 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:02:06,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:02:06,586 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:02:06,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:02:06,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:02:06,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:02:06,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:02:06,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:02:06,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:02:06,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:02:06,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:06,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:02:06,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:02:06,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:02:06,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:02:06,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:02:06,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:02:06,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:02:06,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:02:06,594 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_76e74f96-24e4-49ea-b973-daa34dd9a318/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a3560a89bb35c8c81d2aea87ba8845d78238fa641b06d2b772cf5882c5c8f6 [2023-11-24 22:02:06,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:02:06,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:02:06,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:02:06,874 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:02:06,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:02:06,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2023-11-24 22:02:10,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:02:10,430 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:02:10,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2023-11-24 22:02:10,438 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/data/6ffce3a0d/91fe71bc6d664fdb803af1b769abad93/FLAGe1c2d54a6 [2023-11-24 22:02:10,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/data/6ffce3a0d/91fe71bc6d664fdb803af1b769abad93 [2023-11-24 22:02:10,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:02:10,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:02:10,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:10,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:02:10,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:02:10,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141bce79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10, skipping insertion in model container [2023-11-24 22:02:10,469 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,498 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:02:10,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:10,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:02:10,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:10,748 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:02:10,748 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:02:10,757 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:02:10,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10 WrapperNode [2023-11-24 22:02:10,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:10,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:10,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:02:10,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:02:10,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,798 INFO L138 Inliner]: procedures = 21, calls = 41, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2023-11-24 22:02:10,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:10,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:02:10,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:02:10,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:02:10,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,830 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 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 22:02:10,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:02:10,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:02:10,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:02:10,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:02:10,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (1/1) ... [2023-11-24 22:02:10,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:10,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:02:10,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:02:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:02:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:02:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:02:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:02:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:02:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:02:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:02:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:02:10,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:02:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:02:10,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:02:10,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:02:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:02:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:02:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:02:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:02:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:02:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:02:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:02:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:02:10,927 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 22:02:11,037 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:02:11,039 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:02:11,301 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:02:11,560 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:02:11,562 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:02:11,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:11 BoogieIcfgContainer [2023-11-24 22:02:11,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:02:11,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:02:11,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:02:11,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:02:11,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:02:10" (1/3) ... [2023-11-24 22:02:11,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2757981c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:11, skipping insertion in model container [2023-11-24 22:02:11,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:10" (2/3) ... [2023-11-24 22:02:11,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2757981c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:11, skipping insertion in model container [2023-11-24 22:02:11,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:11" (3/3) ... [2023-11-24 22:02:11,580 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2023-11-24 22:02:11,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:02:11,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-24 22:02:11,604 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:02:11,649 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:02:11,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 40 transitions, 94 flow [2023-11-24 22:02:11,732 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-11-24 22:02:11,732 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:02:11,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 0/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 22:02:11,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 40 transitions, 94 flow [2023-11-24 22:02:11,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 37 transitions, 86 flow [2023-11-24 22:02:11,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:02:11,760 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;@27efecf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:02:11,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-24 22:02:11,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:02:11,769 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:02:11,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:02:11,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:11,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:02:11,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:11,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash 10197, now seen corresponding path program 1 times [2023-11-24 22:02:11,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182490200] [2023-11-24 22:02:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:12,177 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 22:02:12,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:12,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182490200] [2023-11-24 22:02:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182490200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:12,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:02:12,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716617720] [2023-11-24 22:02:12,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:12,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:12,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:12,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2023-11-24 22:02:12,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 22:02:12,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:12,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2023-11-24 22:02:12,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:12,486 INFO L124 PetriNetUnfolderBase]: 108/261 cut-off events. [2023-11-24 22:02:12,486 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-24 22:02:12,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 261 events. 108/261 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1092 event pairs, 108 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 423. Up to 202 conditions per place. [2023-11-24 22:02:12,494 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 17 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-24 22:02:12,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 114 flow [2023-11-24 22:02:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-24 22:02:12,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-24 22:02:12,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-24 22:02:12,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-24 22:02:12,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:12,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-24 22:02:12,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 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 22:02:12,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,564 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 86 flow. Second operand 3 states and 75 transitions. [2023-11-24 22:02:12,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 114 flow [2023-11-24 22:02:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 22:02:12,572 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 72 flow [2023-11-24 22:02:12,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-24 22:02:12,579 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places. [2023-11-24 22:02:12,580 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 72 flow [2023-11-24 22:02:12,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 22:02:12,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:12,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:02:12,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:02:12,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:12,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 10198, now seen corresponding path program 1 times [2023-11-24 22:02:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558819871] [2023-11-24 22:02:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:12,787 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 22:02:12,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:12,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558819871] [2023-11-24 22:02:12,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558819871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:12,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:02:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839868315] [2023-11-24 22:02:12,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:12,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:12,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:12,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2023-11-24 22:02:12,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:12,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2023-11-24 22:02:12,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:12,878 INFO L124 PetriNetUnfolderBase]: 68/191 cut-off events. [2023-11-24 22:02:12,879 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:02:12,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 191 events. 68/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 750 event pairs, 68 based on Foata normal form. 26/195 useless extension candidates. Maximal degree in co-relation 331. Up to 136 conditions per place. [2023-11-24 22:02:12,882 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 15 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-24 22:02:12,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 100 flow [2023-11-24 22:02:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-24 22:02:12,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-24 22:02:12,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-24 22:02:12,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-24 22:02:12,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:12,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-24 22:02:12,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:02:12,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,887 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 72 flow. Second operand 3 states and 78 transitions. [2023-11-24 22:02:12,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 100 flow [2023-11-24 22:02:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:02:12,890 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 69 flow [2023-11-24 22:02:12,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-11-24 22:02:12,891 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2023-11-24 22:02:12,891 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 69 flow [2023-11-24 22:02:12,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:12,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:12,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:02:12,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:02:12,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:12,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash 304054908, now seen corresponding path program 1 times [2023-11-24 22:02:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226990153] [2023-11-24 22:02:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:13,069 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 22:02:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:13,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226990153] [2023-11-24 22:02:13,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226990153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:13,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:13,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:02:13,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472344958] [2023-11-24 22:02:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:13,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:13,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2023-11-24 22:02:13,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:13,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2023-11-24 22:02:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:13,153 INFO L124 PetriNetUnfolderBase]: 76/197 cut-off events. [2023-11-24 22:02:13,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 22:02:13,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 197 events. 76/197 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 748 event pairs, 76 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 355. Up to 154 conditions per place. [2023-11-24 22:02:13,156 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 17 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-24 22:02:13,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 101 flow [2023-11-24 22:02:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2023-11-24 22:02:13,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2023-11-24 22:02:13,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 74 transitions. [2023-11-24 22:02:13,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 74 transitions. [2023-11-24 22:02:13,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:13,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 74 transitions. [2023-11-24 22:02:13,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 22:02:13,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,161 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 69 flow. Second operand 3 states and 74 transitions. [2023-11-24 22:02:13,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 101 flow [2023-11-24 22:02:13,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:02:13,163 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 66 flow [2023-11-24 22:02:13,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-24 22:02:13,165 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2023-11-24 22:02:13,165 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 66 flow [2023-11-24 22:02:13,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:13,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:02:13,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:02:13,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:13,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,167 INFO L85 PathProgramCache]: Analyzing trace with hash 304054909, now seen corresponding path program 1 times [2023-11-24 22:02:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731024260] [2023-11-24 22:02:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:13,234 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 22:02:13,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731024260] [2023-11-24 22:02:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731024260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:13,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:13,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:02:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214955186] [2023-11-24 22:02:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:13,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:13,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:13,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2023-11-24 22:02:13,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:13,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2023-11-24 22:02:13,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:13,320 INFO L124 PetriNetUnfolderBase]: 68/177 cut-off events. [2023-11-24 22:02:13,321 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:02:13,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 177 events. 68/177 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 676 event pairs, 68 based on Foata normal form. 10/179 useless extension candidates. Maximal degree in co-relation 317. Up to 136 conditions per place. [2023-11-24 22:02:13,327 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 15 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-24 22:02:13,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 94 flow [2023-11-24 22:02:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-24 22:02:13,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-24 22:02:13,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-24 22:02:13,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-24 22:02:13,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:13,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-24 22:02:13,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:02:13,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,337 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 66 flow. Second operand 3 states and 78 transitions. [2023-11-24 22:02:13,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 94 flow [2023-11-24 22:02:13,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:02:13,341 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 63 flow [2023-11-24 22:02:13,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-24 22:02:13,343 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2023-11-24 22:02:13,344 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 63 flow [2023-11-24 22:02:13,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:13,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:13,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:02:13,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:13,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash -308291091, now seen corresponding path program 1 times [2023-11-24 22:02:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939679284] [2023-11-24 22:02:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:13,658 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 22:02:13,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:13,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939679284] [2023-11-24 22:02:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939679284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:13,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637444289] [2023-11-24 22:02:13,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:13,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:13,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:13,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-24 22:02:13,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 22:02:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:13,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-24 22:02:13,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:13,844 INFO L124 PetriNetUnfolderBase]: 142/302 cut-off events. [2023-11-24 22:02:13,844 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 22:02:13,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 302 events. 142/302 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1135 event pairs, 63 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 585. Up to 101 conditions per place. [2023-11-24 22:02:13,847 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 22 selfloop transitions, 3 changer transitions 19/52 dead transitions. [2023-11-24 22:02:13,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 205 flow [2023-11-24 22:02:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:02:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 22:02:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2023-11-24 22:02:13,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2023-11-24 22:02:13,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 159 transitions. [2023-11-24 22:02:13,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 159 transitions. [2023-11-24 22:02:13,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:13,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 159 transitions. [2023-11-24 22:02:13,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.5) internal successors, (159), 6 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 22:02:13,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 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 22:02:13,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 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 22:02:13,853 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 63 flow. Second operand 6 states and 159 transitions. [2023-11-24 22:02:13,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 205 flow [2023-11-24 22:02:13,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:02:13,856 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 76 flow [2023-11-24 22:02:13,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2023-11-24 22:02:13,857 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-11-24 22:02:13,857 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 76 flow [2023-11-24 22:02:13,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 22:02:13,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:13,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:13,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:02:13,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:13,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash -125867701, now seen corresponding path program 2 times [2023-11-24 22:02:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000147353] [2023-11-24 22:02:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:13,958 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 22:02:13,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:13,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000147353] [2023-11-24 22:02:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000147353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462164109] [2023-11-24 22:02:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:13,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:13,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-24 22:02:13,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 22:02:13,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:13,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-24 22:02:13,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:14,048 INFO L124 PetriNetUnfolderBase]: 38/114 cut-off events. [2023-11-24 22:02:14,048 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-24 22:02:14,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 114 events. 38/114 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 8 based on Foata normal form. 4/116 useless extension candidates. Maximal degree in co-relation 224. Up to 36 conditions per place. [2023-11-24 22:02:14,050 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 17 selfloop transitions, 6 changer transitions 6/40 dead transitions. [2023-11-24 22:02:14,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 162 flow [2023-11-24 22:02:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:02:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 22:02:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-24 22:02:14,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-24 22:02:14,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-24 22:02:14,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-24 22:02:14,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:14,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-24 22:02:14,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.0) internal successors, (140), 5 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 22:02:14,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 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 22:02:14,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 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 22:02:14,055 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 76 flow. Second operand 5 states and 140 transitions. [2023-11-24 22:02:14,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 162 flow [2023-11-24 22:02:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 154 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-24 22:02:14,058 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 94 flow [2023-11-24 22:02:14,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-11-24 22:02:14,060 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-11-24 22:02:14,060 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 94 flow [2023-11-24 22:02:14,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 22:02:14,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:14,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:02:14,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-24 22:02:14,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1508042099, now seen corresponding path program 3 times [2023-11-24 22:02:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:14,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206226329] [2023-11-24 22:02:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:14,159 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 22:02:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206226329] [2023-11-24 22:02:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206226329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:14,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:14,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674787460] [2023-11-24 22:02:14,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:14,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:14,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-24 22:02:14,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 22:02:14,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:14,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-24 22:02:14,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:14,208 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2023-11-24 22:02:14,208 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 22:02:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 24 events. 6/24 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-11-24 22:02:14,209 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-11-24 22:02:14,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 16 transitions, 72 flow [2023-11-24 22:02:14,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:02:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 22:02:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2023-11-24 22:02:14,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61 [2023-11-24 22:02:14,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 122 transitions. [2023-11-24 22:02:14,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 122 transitions. [2023-11-24 22:02:14,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:14,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 122 transitions. [2023-11-24 22:02:14,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 22:02:14,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 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 22:02:14,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 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 22:02:14,214 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 94 flow. Second operand 5 states and 122 transitions. [2023-11-24 22:02:14,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 16 transitions, 72 flow [2023-11-24 22:02:14,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 65 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 22:02:14,215 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-11-24 22:02:14,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-11-24 22:02:14,216 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -17 predicate places. [2023-11-24 22:02:14,217 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-11-24 22:02:14,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 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 22:02:14,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-24 22:02:14,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-24 22:02:14,222 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-24 22:02:14,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-24 22:02:14,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-24 22:02:14,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-24 22:02:14,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-24 22:02:14,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-24 22:02:14,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-24 22:02:14,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-24 22:02:14,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-24 22:02:14,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-24 22:02:14,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:02:14,225 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-11-24 22:02:14,231 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:02:14,231 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:02:14,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:02:14 BasicIcfg [2023-11-24 22:02:14,241 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:02:14,241 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:02:14,241 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:02:14,242 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:02:14,242 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:11" (3/4) ... [2023-11-24 22:02:14,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:02:14,248 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-24 22:02:14,248 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-24 22:02:14,258 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 75 nodes and edges [2023-11-24 22:02:14,258 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-24 22:02:14,259 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 22:02:14,259 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 22:02:14,372 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:02:14,372 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:02:14,373 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:02:14,373 INFO L158 Benchmark]: Toolchain (without parser) took 3914.99ms. Allocated memory is still 207.6MB. Free memory was 161.8MB in the beginning and 96.2MB in the end (delta: 65.6MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,373 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:02:14,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.84ms. Allocated memory is still 207.6MB. Free memory was 161.8MB in the beginning and 150.6MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.59ms. Allocated memory is still 207.6MB. Free memory was 149.8MB in the beginning and 148.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,374 INFO L158 Benchmark]: Boogie Preprocessor took 48.54ms. Allocated memory is still 207.6MB. Free memory was 148.5MB in the beginning and 146.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,375 INFO L158 Benchmark]: RCFGBuilder took 715.85ms. Allocated memory is still 207.6MB. Free memory was 145.7MB in the beginning and 110.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,375 INFO L158 Benchmark]: TraceAbstraction took 2671.76ms. Allocated memory is still 207.6MB. Free memory was 109.4MB in the beginning and 101.4MB in the end (delta: 7.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,376 INFO L158 Benchmark]: Witness Printer took 131.36ms. Allocated memory is still 207.6MB. Free memory was 101.4MB in the beginning and 96.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 22:02:14,378 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.84ms. Allocated memory is still 207.6MB. Free memory was 161.8MB in the beginning and 150.6MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.59ms. Allocated memory is still 207.6MB. Free memory was 149.8MB in the beginning and 148.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.54ms. Allocated memory is still 207.6MB. Free memory was 148.5MB in the beginning and 146.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 715.85ms. Allocated memory is still 207.6MB. Free memory was 145.7MB in the beginning and 110.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2671.76ms. Allocated memory is still 207.6MB. Free memory was 109.4MB in the beginning and 101.4MB in the end (delta: 7.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 131.36ms. Allocated memory is still 207.6MB. Free memory was 101.4MB in the beginning and 96.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: -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: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 82]: 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, 58 locations, 12 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 199 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 285 IncrementalHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 23 mSDtfsCounter, 285 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=6, InterpolantAutomatonStates: 28, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:02:14,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e74f96-24e4-49ea-b973-daa34dd9a318/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