./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/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_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/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_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:59:49,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:59:49,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:59:49,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:59:49,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:59:49,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:59:49,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:59:49,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:59:49,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:59:49,371 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:59:49,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:59:49,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:59:49,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:59:49,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:59:49,375 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:59:49,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:59:49,376 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:59:49,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:59:49,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:59:49,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:59:49,379 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:59:49,379 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:59:49,380 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:59:49,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:59:49,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:59:49,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:59:49,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:59:49,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:59:49,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:59:49,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:59:49,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:59:49,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:59:49,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:59:49,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:59:49,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:59:49,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:59:49,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:59:49,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:59:49,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:59:49,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:59:49,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:59:49,389 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_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2023-11-24 21:59:49,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:59:49,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:59:49,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:59:49,714 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:59:49,714 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:59:49,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-24 21:59:53,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:59:53,347 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:59:53,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/sv-benchmarks/c/pthread-wmm/safe035_power.i [2023-11-24 21:59:53,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/data/761f7b4d7/651bb5b546164379b78401518c029ebf/FLAG06eec5113 [2023-11-24 21:59:53,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/data/761f7b4d7/651bb5b546164379b78401518c029ebf [2023-11-24 21:59:53,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:59:53,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:59:53,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:59:53,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:59:53,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:59:53,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:59:53" (1/1) ... [2023-11-24 21:59:53,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ea1737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:53, skipping insertion in model container [2023-11-24 21:59:53,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:59:53" (1/1) ... [2023-11-24 21:59:53,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:59:54,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:59:54,164 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:59:54,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:59:54,354 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:59:54,355 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:59:54,363 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:59:54,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54 WrapperNode [2023-11-24 21:59:54,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:59:54,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:59:54,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:59:54,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:59:54,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,454 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 178 [2023-11-24 21:59:54,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:59:54,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:59:54,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:59:54,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:59:54,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,499 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:59:54,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:59:54,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:59:54,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:59:54,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:59:54,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (1/1) ... [2023-11-24 21:59:54,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:59:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:59:54,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:59:54,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:59:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:59:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:59:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:59:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:59:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:59:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:59:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:59:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:59:54,655 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:59:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:59:54,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:59:54,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:59:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:59:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:59:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:59:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:59:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:59:54,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:59:54,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:59:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:59:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:59:54,663 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:59:54,906 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:59:54,909 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:59:55,466 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:59:55,797 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:59:55,798 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:59:55,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:59:55 BoogieIcfgContainer [2023-11-24 21:59:55,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:59:55,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:59:55,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:59:55,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:59:55,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:59:53" (1/3) ... [2023-11-24 21:59:55,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc1b7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:59:55, skipping insertion in model container [2023-11-24 21:59:55,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:54" (2/3) ... [2023-11-24 21:59:55,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc1b7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:59:55, skipping insertion in model container [2023-11-24 21:59:55,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:59:55" (3/3) ... [2023-11-24 21:59:55,811 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-11-24 21:59:55,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:59:55,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-24 21:59:55,831 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:59:55,904 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:59:55,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 56 transitions, 124 flow [2023-11-24 21:59:56,007 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2023-11-24 21:59:56,008 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:59:56,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-24 21:59:56,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 56 transitions, 124 flow [2023-11-24 21:59:56,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 53 transitions, 115 flow [2023-11-24 21:59:56,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:59:56,038 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;@2055294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:59:56,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:59:56,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:59:56,045 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:59:56,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:59:56,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:59:56,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:59:56,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:59:56,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash 15672, now seen corresponding path program 1 times [2023-11-24 21:59:56,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:59:56,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701080375] [2023-11-24 21:59:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:56,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:59:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:56,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:59:56,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701080375] [2023-11-24 21:59:56,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701080375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:56,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:56,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:59:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268558383] [2023-11-24 21:59:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:59:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:59:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:59:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:59:56,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 21:59:56,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 115 flow. Second operand has 3 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 21:59:56,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:59:56,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 21:59:56,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:59:57,958 INFO L124 PetriNetUnfolderBase]: 2962/5049 cut-off events. [2023-11-24 21:59:57,959 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-24 21:59:57,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9376 conditions, 5049 events. 2962/5049 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35235 event pairs, 2288 based on Foata normal form. 280/5082 useless extension candidates. Maximal degree in co-relation 9362. Up to 3318 conditions per place. [2023-11-24 21:59:58,015 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 39 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-24 21:59:58,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 215 flow [2023-11-24 21:59:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:59:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:59:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-24 21:59:58,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2023-11-24 21:59:58,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-24 21:59:58,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-24 21:59:58,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:59:58,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-24 21:59:58,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:58,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:58,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:58,082 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 115 flow. Second operand 3 states and 116 transitions. [2023-11-24 21:59:58,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 215 flow [2023-11-24 21:59:58,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:59:58,097 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 108 flow [2023-11-24 21:59:58,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-24 21:59:58,103 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-24 21:59:58,104 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 108 flow [2023-11-24 21:59:58,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 21:59:58,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:59:58,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:59:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:59:58,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:59:58,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash 15673, now seen corresponding path program 1 times [2023-11-24 21:59:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:59:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478465298] [2023-11-24 21:59:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:59:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:58,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:59:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478465298] [2023-11-24 21:59:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478465298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:59:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106881751] [2023-11-24 21:59:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:58,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:59:58,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:59:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:59:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:59:58,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 21:59:58,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:58,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:59:58,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 21:59:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:59:59,440 INFO L124 PetriNetUnfolderBase]: 2962/5048 cut-off events. [2023-11-24 21:59:59,440 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-24 21:59:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9513 conditions, 5048 events. 2962/5048 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35202 event pairs, 2288 based on Foata normal form. 1/4802 useless extension candidates. Maximal degree in co-relation 9502. Up to 3317 conditions per place. [2023-11-24 21:59:59,534 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 38 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-24 21:59:59,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 212 flow [2023-11-24 21:59:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:59:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:59:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-24 21:59:59,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2023-11-24 21:59:59,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-24 21:59:59,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-24 21:59:59,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:59:59,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-24 21:59:59,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:59,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:59,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:59,542 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 108 flow. Second operand 3 states and 116 transitions. [2023-11-24 21:59:59,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 212 flow [2023-11-24 21:59:59,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:59:59,557 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 106 flow [2023-11-24 21:59:59,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-24 21:59:59,559 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-24 21:59:59,559 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 106 flow [2023-11-24 21:59:59,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:59,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:59:59,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:59:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:59:59,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:59:59,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 467367821, now seen corresponding path program 1 times [2023-11-24 21:59:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:59:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416835034] [2023-11-24 21:59:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:59,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:59:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:59:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416835034] [2023-11-24 21:59:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416835034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:59,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:59,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:59:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826261254] [2023-11-24 21:59:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:59,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:59:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:59:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:59:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:59:59,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 21:59:59,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:59:59,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:59:59,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 21:59:59,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:00,691 INFO L124 PetriNetUnfolderBase]: 2965/5047 cut-off events. [2023-11-24 22:00:00,692 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-24 22:00:00,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9519 conditions, 5047 events. 2965/5047 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35367 event pairs, 1730 based on Foata normal form. 0/4810 useless extension candidates. Maximal degree in co-relation 9508. Up to 3319 conditions per place. [2023-11-24 22:00:00,741 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 39 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-24 22:00:00,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 212 flow [2023-11-24 22:00:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:00:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:00:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-24 22:00:00,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2023-11-24 22:00:00,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-24 22:00:00,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-24 22:00:00,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:00,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-24 22:00:00,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 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 22:00:00,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:00,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:00,753 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 106 flow. Second operand 3 states and 114 transitions. [2023-11-24 22:00:00,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 212 flow [2023-11-24 22:00:00,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:00,773 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 104 flow [2023-11-24 22:00:00,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-24 22:00:00,775 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2023-11-24 22:00:00,776 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 104 flow [2023-11-24 22:00:00,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 22:00:00,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:00,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:00:00,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:00:00,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:00,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 467367822, now seen corresponding path program 1 times [2023-11-24 22:00:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:00,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582050574] [2023-11-24 22:00:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:00,896 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 22:00:00,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582050574] [2023-11-24 22:00:00,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582050574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:00,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:00,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:00:00,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900070012] [2023-11-24 22:00:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:00,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:00:00,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:00:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:00:00,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:00,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:00:00,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:00,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:00,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:01,839 INFO L124 PetriNetUnfolderBase]: 2962/5040 cut-off events. [2023-11-24 22:00:01,840 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-24 22:00:01,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9508 conditions, 5040 events. 2962/5040 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35287 event pairs, 1730 based on Foata normal form. 4/4808 useless extension candidates. Maximal degree in co-relation 9498. Up to 3312 conditions per place. [2023-11-24 22:00:01,885 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 38 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-24 22:00:01,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 208 flow [2023-11-24 22:00:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:00:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:00:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-24 22:00:01,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2023-11-24 22:00:01,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-24 22:00:01,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-24 22:00:01,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:01,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-24 22:00:01,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 22:00:01,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:01,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:01,890 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 104 flow. Second operand 3 states and 116 transitions. [2023-11-24 22:00:01,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 208 flow [2023-11-24 22:00:01,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:01,897 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 102 flow [2023-11-24 22:00:01,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-24 22:00:01,898 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2023-11-24 22:00:01,899 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 102 flow [2023-11-24 22:00:01,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:00:01,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:01,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:01,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:00:01,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:01,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash -928737776, now seen corresponding path program 1 times [2023-11-24 22:00:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874248701] [2023-11-24 22:00:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:01,958 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 22:00:01,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:01,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874248701] [2023-11-24 22:00:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874248701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:01,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:01,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:00:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221768098] [2023-11-24 22:00:01,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:01,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:00:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:00:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:00:01,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 22:00:01,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 102 flow. Second operand has 3 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 22:00:01,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:01,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 22:00:01,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:02,815 INFO L124 PetriNetUnfolderBase]: 2993/5027 cut-off events. [2023-11-24 22:00:02,815 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-24 22:00:02,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 5027 events. 2993/5027 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 35097 event pairs, 1172 based on Foata normal form. 0/4824 useless extension candidates. Maximal degree in co-relation 9536. Up to 3321 conditions per place. [2023-11-24 22:00:02,848 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-24 22:00:02,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 208 flow [2023-11-24 22:00:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:00:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:00:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-24 22:00:02,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2023-11-24 22:00:02,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-24 22:00:02,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-24 22:00:02,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:02,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-24 22:00:02,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 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 22:00:02,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:02,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:02,853 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 102 flow. Second operand 3 states and 114 transitions. [2023-11-24 22:00:02,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 208 flow [2023-11-24 22:00:02,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:02,858 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-24 22:00:02,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-24 22:00:02,859 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-11-24 22:00:02,859 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-24 22:00:02,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:00:02,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:02,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:02,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:00:02,860 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:02,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -928737775, now seen corresponding path program 1 times [2023-11-24 22:00:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947756502] [2023-11-24 22:00:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:02,949 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 22:00:02,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:02,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947756502] [2023-11-24 22:00:02,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947756502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:02,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:02,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:00:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553165349] [2023-11-24 22:00:02,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:02,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:00:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:02,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:00:02,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:00:02,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:02,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 22:00:02,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:02,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:02,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:04,042 INFO L124 PetriNetUnfolderBase]: 2962/4976 cut-off events. [2023-11-24 22:00:04,043 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-24 22:00:04,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 4976 events. 2962/4976 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 34716 event pairs, 1172 based on Foata normal form. 20/4793 useless extension candidates. Maximal degree in co-relation 9450. Up to 3270 conditions per place. [2023-11-24 22:00:04,082 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 38 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-24 22:00:04,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 204 flow [2023-11-24 22:00:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:00:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:00:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-24 22:00:04,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2023-11-24 22:00:04,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-24 22:00:04,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-24 22:00:04,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:04,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-24 22:00:04,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 22:00:04,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:04,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:04,089 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 116 transitions. [2023-11-24 22:00:04,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 204 flow [2023-11-24 22:00:04,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:04,094 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 22:00:04,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 22:00:04,097 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2023-11-24 22:00:04,098 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 22:00:04,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 22:00:04,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:04,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:04,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:00:04,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash 152716340, now seen corresponding path program 1 times [2023-11-24 22:00:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:04,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375122781] [2023-11-24 22:00:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:04,276 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 22:00:04,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:04,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375122781] [2023-11-24 22:00:04,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375122781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:04,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:04,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:00:04,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508980340] [2023-11-24 22:00:04,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:04,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:00:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:00:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:00:04,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 56 [2023-11-24 22:00:04,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:00:04,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:04,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 56 [2023-11-24 22:00:04,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:05,001 INFO L124 PetriNetUnfolderBase]: 2523/3977 cut-off events. [2023-11-24 22:00:05,001 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-24 22:00:05,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 3977 events. 2523/3977 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25067 event pairs, 328 based on Foata normal form. 0/3962 useless extension candidates. Maximal degree in co-relation 7812. Up to 3096 conditions per place. [2023-11-24 22:00:05,024 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 37 selfloop transitions, 2 changer transitions 2/58 dead transitions. [2023-11-24 22:00:05,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 210 flow [2023-11-24 22:00:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:00:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:00:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-24 22:00:05,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-24 22:00:05,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-24 22:00:05,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-24 22:00:05,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:05,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-24 22:00:05,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:00:05,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:05,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 22:00:05,028 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 120 transitions. [2023-11-24 22:00:05,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 210 flow [2023-11-24 22:00:05,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:05,036 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 94 flow [2023-11-24 22:00:05,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-24 22:00:05,038 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-11-24 22:00:05,039 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 94 flow [2023-11-24 22:00:05,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:00:05,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:05,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:05,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:00:05,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:05,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1459720887, now seen corresponding path program 1 times [2023-11-24 22:00:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168444749] [2023-11-24 22:00:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:05,807 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 22:00:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168444749] [2023-11-24 22:00:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168444749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:05,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:05,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:00:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511809222] [2023-11-24 22:00:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:00:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:00:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:00:06,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2023-11-24 22:00:06,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 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 22:00:06,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:06,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2023-11-24 22:00:06,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:06,970 INFO L124 PetriNetUnfolderBase]: 2240/3646 cut-off events. [2023-11-24 22:00:06,971 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-24 22:00:06,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7114 conditions, 3646 events. 2240/3646 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23419 event pairs, 576 based on Foata normal form. 120/3757 useless extension candidates. Maximal degree in co-relation 7102. Up to 1431 conditions per place. [2023-11-24 22:00:06,990 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 45 selfloop transitions, 4 changer transitions 14/77 dead transitions. [2023-11-24 22:00:06,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 292 flow [2023-11-24 22:00:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:00:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:00:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2023-11-24 22:00:06,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739795918367347 [2023-11-24 22:00:06,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 225 transitions. [2023-11-24 22:00:06,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 225 transitions. [2023-11-24 22:00:06,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:06,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 225 transitions. [2023-11-24 22:00:06,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.142857142857146) internal successors, (225), 7 states have internal predecessors, (225), 0 states have call successors, (0), 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 22:00:06,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 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 22:00:06,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 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 22:00:06,995 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 94 flow. Second operand 7 states and 225 transitions. [2023-11-24 22:00:06,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 292 flow [2023-11-24 22:00:06,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:06,998 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 94 flow [2023-11-24 22:00:06,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=94, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-11-24 22:00:06,999 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-11-24 22:00:06,999 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 94 flow [2023-11-24 22:00:06,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 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 22:00:07,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:07,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:00:07,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:07,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:07,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1459722290, now seen corresponding path program 1 times [2023-11-24 22:00:07,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:07,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593383019] [2023-11-24 22:00:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:07,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:07,275 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 22:00:07,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:07,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593383019] [2023-11-24 22:00:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593383019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:07,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:07,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:00:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310782545] [2023-11-24 22:00:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:07,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:00:07,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:07,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:00:07,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:00:07,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2023-11-24 22:00:07,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:00:07,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:07,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2023-11-24 22:00:07,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:07,989 INFO L124 PetriNetUnfolderBase]: 3374/5450 cut-off events. [2023-11-24 22:00:07,989 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-11-24 22:00:07,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10734 conditions, 5450 events. 3374/5450 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 34236 event pairs, 490 based on Foata normal form. 210/5652 useless extension candidates. Maximal degree in co-relation 10723. Up to 2959 conditions per place. [2023-11-24 22:00:08,018 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 55 selfloop transitions, 5 changer transitions 1/73 dead transitions. [2023-11-24 22:00:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 294 flow [2023-11-24 22:00:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:00:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:00:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2023-11-24 22:00:08,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6741071428571429 [2023-11-24 22:00:08,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 151 transitions. [2023-11-24 22:00:08,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 151 transitions. [2023-11-24 22:00:08,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:08,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 151 transitions. [2023-11-24 22:00:08,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 22:00:08,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 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 22:00:08,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 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 22:00:08,023 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 94 flow. Second operand 4 states and 151 transitions. [2023-11-24 22:00:08,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 294 flow [2023-11-24 22:00:08,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 281 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 22:00:08,028 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 121 flow [2023-11-24 22:00:08,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-24 22:00:08,029 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2023-11-24 22:00:08,030 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 121 flow [2023-11-24 22:00:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:00:08,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:08,030 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] [2023-11-24 22:00:08,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:00:08,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:08,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash 403283997, now seen corresponding path program 1 times [2023-11-24 22:00:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83219663] [2023-11-24 22:00:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:08,315 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 22:00:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83219663] [2023-11-24 22:00:08,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83219663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:08,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:08,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:00:08,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844064292] [2023-11-24 22:00:08,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:08,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:00:08,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:00:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:00:08,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2023-11-24 22:00:08,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 121 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 22:00:08,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:08,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2023-11-24 22:00:08,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:08,950 INFO L124 PetriNetUnfolderBase]: 1878/3048 cut-off events. [2023-11-24 22:00:08,951 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2023-11-24 22:00:08,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 3048 events. 1878/3048 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 16581 event pairs, 304 based on Foata normal form. 150/3190 useless extension candidates. Maximal degree in co-relation 6962. Up to 985 conditions per place. [2023-11-24 22:00:08,969 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 70 selfloop transitions, 8 changer transitions 1/91 dead transitions. [2023-11-24 22:00:08,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 399 flow [2023-11-24 22:00:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:00:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 22:00:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2023-11-24 22:00:08,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821428571428572 [2023-11-24 22:00:08,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 191 transitions. [2023-11-24 22:00:08,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 191 transitions. [2023-11-24 22:00:08,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:08,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 191 transitions. [2023-11-24 22:00:08,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 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 22:00:08,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 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 22:00:08,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 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 22:00:08,974 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 121 flow. Second operand 5 states and 191 transitions. [2023-11-24 22:00:08,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 399 flow [2023-11-24 22:00:08,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 389 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 22:00:08,978 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 161 flow [2023-11-24 22:00:08,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-24 22:00:08,979 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-24 22:00:08,979 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 161 flow [2023-11-24 22:00:08,980 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 22:00:08,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:08,980 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, 1, 1, 1] [2023-11-24 22:00:08,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:00:08,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:08,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1193789436, now seen corresponding path program 1 times [2023-11-24 22:00:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:08,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768009710] [2023-11-24 22:00:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:09,408 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 22:00:09,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768009710] [2023-11-24 22:00:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768009710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:09,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:09,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:00:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092286592] [2023-11-24 22:00:09,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:09,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:00:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:00:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:00:09,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2023-11-24 22:00:09,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 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 22:00:09,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:09,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2023-11-24 22:00:09,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:09,933 INFO L124 PetriNetUnfolderBase]: 1115/1759 cut-off events. [2023-11-24 22:00:09,934 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2023-11-24 22:00:09,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4463 conditions, 1759 events. 1115/1759 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8516 event pairs, 269 based on Foata normal form. 56/1807 useless extension candidates. Maximal degree in co-relation 4448. Up to 646 conditions per place. [2023-11-24 22:00:09,946 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 59 selfloop transitions, 11 changer transitions 1/83 dead transitions. [2023-11-24 22:00:09,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 389 flow [2023-11-24 22:00:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:00:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 22:00:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-24 22:00:09,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6101190476190477 [2023-11-24 22:00:09,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-24 22:00:09,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-24 22:00:09,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:09,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-24 22:00:09,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:00:09,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 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 22:00:09,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 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 22:00:09,952 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 161 flow. Second operand 6 states and 205 transitions. [2023-11-24 22:00:09,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 389 flow [2023-11-24 22:00:09,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 364 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 22:00:09,962 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 175 flow [2023-11-24 22:00:09,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=175, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-11-24 22:00:09,963 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-24 22:00:09,963 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 175 flow [2023-11-24 22:00:09,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 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 22:00:09,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:09,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:09,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:00:09,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:09,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1000911378, now seen corresponding path program 1 times [2023-11-24 22:00:09,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:09,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610261467] [2023-11-24 22:00:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:09,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:12,399 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 22:00:12,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:12,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610261467] [2023-11-24 22:00:12,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610261467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:12,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:12,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 22:00:12,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842956365] [2023-11-24 22:00:12,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:12,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 22:00:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:12,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 22:00:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:00:12,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:12,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 175 flow. Second operand has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:12,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:12,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:12,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:13,323 INFO L124 PetriNetUnfolderBase]: 1329/2303 cut-off events. [2023-11-24 22:00:13,323 INFO L125 PetriNetUnfolderBase]: For 819/843 co-relation queries the response was YES. [2023-11-24 22:00:13,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5299 conditions, 2303 events. 1329/2303 cut-off events. For 819/843 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12997 event pairs, 166 based on Foata normal form. 8/2260 useless extension candidates. Maximal degree in co-relation 5283. Up to 965 conditions per place. [2023-11-24 22:00:13,336 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 44 selfloop transitions, 7 changer transitions 38/110 dead transitions. [2023-11-24 22:00:13,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 496 flow [2023-11-24 22:00:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:00:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:00:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2023-11-24 22:00:13,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2023-11-24 22:00:13,340 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 340 transitions. [2023-11-24 22:00:13,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 340 transitions. [2023-11-24 22:00:13,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:13,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 340 transitions. [2023-11-24 22:00:13,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 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 22:00:13,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 56.0) internal successors, (616), 11 states have internal predecessors, (616), 0 states have call successors, (0), 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 22:00:13,346 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 56.0) internal successors, (616), 11 states have internal predecessors, (616), 0 states have call successors, (0), 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 22:00:13,346 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 175 flow. Second operand 10 states and 340 transitions. [2023-11-24 22:00:13,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 496 flow [2023-11-24 22:00:13,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 432 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-24 22:00:13,358 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 176 flow [2023-11-24 22:00:13,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-11-24 22:00:13,361 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-11-24 22:00:13,361 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 176 flow [2023-11-24 22:00:13,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:13,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:13,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:00:13,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:13,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1155334418, now seen corresponding path program 2 times [2023-11-24 22:00:13,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:13,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291056977] [2023-11-24 22:00:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:13,892 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 22:00:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291056977] [2023-11-24 22:00:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291056977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:13,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:13,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:00:13,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410963018] [2023-11-24 22:00:13,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:00:13,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:00:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:00:13,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 22:00:13,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 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 22:00:13,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:13,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 22:00:13,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:14,615 INFO L124 PetriNetUnfolderBase]: 1625/2717 cut-off events. [2023-11-24 22:00:14,615 INFO L125 PetriNetUnfolderBase]: For 1274/1280 co-relation queries the response was YES. [2023-11-24 22:00:14,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 2717 events. 1625/2717 cut-off events. For 1274/1280 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15421 event pairs, 207 based on Foata normal form. 8/2655 useless extension candidates. Maximal degree in co-relation 6944. Up to 1303 conditions per place. [2023-11-24 22:00:14,629 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 41 selfloop transitions, 1 changer transitions 30/93 dead transitions. [2023-11-24 22:00:14,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 464 flow [2023-11-24 22:00:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:00:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 22:00:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2023-11-24 22:00:14,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2023-11-24 22:00:14,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 207 transitions. [2023-11-24 22:00:14,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 207 transitions. [2023-11-24 22:00:14,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:14,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 207 transitions. [2023-11-24 22:00:14,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 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 22:00:14,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 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 22:00:14,634 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 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 22:00:14,635 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 176 flow. Second operand 6 states and 207 transitions. [2023-11-24 22:00:14,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 464 flow [2023-11-24 22:00:14,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 427 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-24 22:00:14,644 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 170 flow [2023-11-24 22:00:14,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-11-24 22:00:14,646 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-11-24 22:00:14,646 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 170 flow [2023-11-24 22:00:14,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 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 22:00:14,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:14,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:00:14,647 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:14,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -48907558, now seen corresponding path program 3 times [2023-11-24 22:00:14,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759742206] [2023-11-24 22:00:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:00:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759742206] [2023-11-24 22:00:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759742206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:17,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 22:00:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018989287] [2023-11-24 22:00:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 22:00:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 22:00:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:00:17,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:17,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 170 flow. Second operand has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:17,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:17,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:17,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:18,561 INFO L124 PetriNetUnfolderBase]: 1714/3013 cut-off events. [2023-11-24 22:00:18,561 INFO L125 PetriNetUnfolderBase]: For 883/885 co-relation queries the response was YES. [2023-11-24 22:00:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7200 conditions, 3013 events. 1714/3013 cut-off events. For 883/885 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18540 event pairs, 337 based on Foata normal form. 8/2950 useless extension candidates. Maximal degree in co-relation 7181. Up to 1013 conditions per place. [2023-11-24 22:00:18,577 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 32 selfloop transitions, 7 changer transitions 53/113 dead transitions. [2023-11-24 22:00:18,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 113 transitions, 533 flow [2023-11-24 22:00:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:00:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:00:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 312 transitions. [2023-11-24 22:00:18,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2023-11-24 22:00:18,580 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 312 transitions. [2023-11-24 22:00:18,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 312 transitions. [2023-11-24 22:00:18,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:18,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 312 transitions. [2023-11-24 22:00:18,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.666666666666664) internal successors, (312), 9 states have internal predecessors, (312), 0 states have call successors, (0), 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 22:00:18,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 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 22:00:18,584 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 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 22:00:18,585 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 170 flow. Second operand 9 states and 312 transitions. [2023-11-24 22:00:18,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 113 transitions, 533 flow [2023-11-24 22:00:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 522 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-24 22:00:18,590 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 229 flow [2023-11-24 22:00:18,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=229, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-24 22:00:18,591 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2023-11-24 22:00:18,591 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 229 flow [2023-11-24 22:00:18,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:18,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:18,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:18,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:00:18,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:18,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash 251051310, now seen corresponding path program 4 times [2023-11-24 22:00:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:18,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164069938] [2023-11-24 22:00:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:22,272 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 22:00:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164069938] [2023-11-24 22:00:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164069938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:22,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 22:00:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460144969] [2023-11-24 22:00:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:22,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 22:00:22,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 22:00:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-24 22:00:22,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:22,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 229 flow. Second operand has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 0 states have call successors, (0), 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 22:00:22,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:22,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:22,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:23,110 INFO L124 PetriNetUnfolderBase]: 1155/2134 cut-off events. [2023-11-24 22:00:23,110 INFO L125 PetriNetUnfolderBase]: For 2877/2891 co-relation queries the response was YES. [2023-11-24 22:00:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6380 conditions, 2134 events. 1155/2134 cut-off events. For 2877/2891 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12342 event pairs, 421 based on Foata normal form. 8/2089 useless extension candidates. Maximal degree in co-relation 6357. Up to 905 conditions per place. [2023-11-24 22:00:23,121 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 35 selfloop transitions, 9 changer transitions 25/90 dead transitions. [2023-11-24 22:00:23,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 526 flow [2023-11-24 22:00:23,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:00:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:00:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2023-11-24 22:00:23,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2023-11-24 22:00:23,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 240 transitions. [2023-11-24 22:00:23,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 240 transitions. [2023-11-24 22:00:23,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:23,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 240 transitions. [2023-11-24 22:00:23,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 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 22:00:23,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 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 22:00:23,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 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 22:00:23,127 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 229 flow. Second operand 7 states and 240 transitions. [2023-11-24 22:00:23,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 526 flow [2023-11-24 22:00:23,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 500 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-24 22:00:23,133 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 262 flow [2023-11-24 22:00:23,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2023-11-24 22:00:23,134 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2023-11-24 22:00:23,134 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 262 flow [2023-11-24 22:00:23,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 0 states have call successors, (0), 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 22:00:23,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:23,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:23,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 22:00:23,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:23,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1658726106, now seen corresponding path program 5 times [2023-11-24 22:00:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504097688] [2023-11-24 22:00:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:23,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:26,289 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 22:00:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504097688] [2023-11-24 22:00:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504097688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:26,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:26,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 22:00:26,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122198604] [2023-11-24 22:00:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 22:00:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 22:00:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:00:26,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:26,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 262 flow. Second operand has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:26,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:26,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:26,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:27,418 INFO L124 PetriNetUnfolderBase]: 1246/2367 cut-off events. [2023-11-24 22:00:27,418 INFO L125 PetriNetUnfolderBase]: For 2851/2865 co-relation queries the response was YES. [2023-11-24 22:00:27,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6979 conditions, 2367 events. 1246/2367 cut-off events. For 2851/2865 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14604 event pairs, 157 based on Foata normal form. 8/2322 useless extension candidates. Maximal degree in co-relation 6955. Up to 785 conditions per place. [2023-11-24 22:00:27,429 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 33 selfloop transitions, 3 changer transitions 46/103 dead transitions. [2023-11-24 22:00:27,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 103 transitions, 630 flow [2023-11-24 22:00:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:00:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:00:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2023-11-24 22:00:27,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2023-11-24 22:00:27,432 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2023-11-24 22:00:27,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2023-11-24 22:00:27,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:27,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2023-11-24 22:00:27,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 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 22:00:27,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 56.0) internal successors, (616), 11 states have internal predecessors, (616), 0 states have call successors, (0), 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 22:00:27,436 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 56.0) internal successors, (616), 11 states have internal predecessors, (616), 0 states have call successors, (0), 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 22:00:27,437 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 262 flow. Second operand 10 states and 325 transitions. [2023-11-24 22:00:27,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 103 transitions, 630 flow [2023-11-24 22:00:27,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 605 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-24 22:00:27,445 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 218 flow [2023-11-24 22:00:27,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2023-11-24 22:00:27,446 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2023-11-24 22:00:27,447 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 218 flow [2023-11-24 22:00:27,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:27,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:00:27,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:27,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 22:00:27,448 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:00:27,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1328875076, now seen corresponding path program 6 times [2023-11-24 22:00:27,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:00:27,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139303789] [2023-11-24 22:00:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:00:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:29,113 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 22:00:29,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:00:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139303789] [2023-11-24 22:00:29,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139303789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:29,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:29,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 22:00:29,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193056831] [2023-11-24 22:00:29,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:29,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 22:00:29,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:00:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 22:00:29,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:00:29,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2023-11-24 22:00:29,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 50 transitions, 218 flow. Second operand has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:29,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:00:29,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2023-11-24 22:00:29,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:00:29,832 INFO L124 PetriNetUnfolderBase]: 566/1102 cut-off events. [2023-11-24 22:00:29,832 INFO L125 PetriNetUnfolderBase]: For 1548/1560 co-relation queries the response was YES. [2023-11-24 22:00:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 1102 events. 566/1102 cut-off events. For 1548/1560 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5949 event pairs, 40 based on Foata normal form. 12/1088 useless extension candidates. Maximal degree in co-relation 3325. Up to 343 conditions per place. [2023-11-24 22:00:29,843 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2023-11-24 22:00:29,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 508 flow [2023-11-24 22:00:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:00:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:00:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2023-11-24 22:00:29,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2023-11-24 22:00:29,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 292 transitions. [2023-11-24 22:00:29,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 292 transitions. [2023-11-24 22:00:29,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:00:29,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 292 transitions. [2023-11-24 22:00:29,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 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 22:00:29,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 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 22:00:29,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 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 22:00:29,851 INFO L175 Difference]: Start difference. First operand has 81 places, 50 transitions, 218 flow. Second operand 9 states and 292 transitions. [2023-11-24 22:00:29,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 508 flow [2023-11-24 22:00:29,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 462 flow, removed 16 selfloop flow, removed 11 redundant places. [2023-11-24 22:00:29,858 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2023-11-24 22:00:29,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2023-11-24 22:00:29,859 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2023-11-24 22:00:29,860 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2023-11-24 22:00:29,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.0) internal successors, (297), 11 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:00:29,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-24 22:00:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-24 22:00:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-24 22:00:29,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-24 22:00:29,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-24 22:00:29,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-24 22:00:29,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-24 22:00:29,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (5 of 13 remaining) [2023-11-24 22:00:29,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-11-24 22:00:29,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-11-24 22:00:29,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-24 22:00:29,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-24 22:00:29,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-24 22:00:29,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 22:00:29,867 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:29,874 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:00:29,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:00:29,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:00:29 BasicIcfg [2023-11-24 22:00:29,880 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:00:29,881 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:00:29,881 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:00:29,881 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:00:29,882 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:59:55" (3/4) ... [2023-11-24 22:00:29,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:00:29,887 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 22:00:29,887 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 22:00:29,888 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 22:00:29,895 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 94 nodes and edges [2023-11-24 22:00:29,895 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-24 22:00:29,896 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 22:00:29,896 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 22:00:29,993 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:00:29,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:00:29,994 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:00:29,995 INFO L158 Benchmark]: Toolchain (without parser) took 36602.67ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 128.8MB in the beginning and 403.2MB in the end (delta: -274.5MB). Peak memory consumption was 732.7MB. Max. memory is 16.1GB. [2023-11-24 22:00:29,995 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 63.5MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:00:29,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 970.87ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 100.2MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-24 22:00:29,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.39ms. Allocated memory is still 172.0MB. Free memory was 100.2MB in the beginning and 96.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:00:29,997 INFO L158 Benchmark]: Boogie Preprocessor took 91.47ms. Allocated memory is still 172.0MB. Free memory was 96.7MB in the beginning and 91.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 22:00:29,997 INFO L158 Benchmark]: RCFGBuilder took 1250.98ms. Allocated memory is still 172.0MB. Free memory was 91.8MB in the beginning and 88.9MB in the end (delta: 2.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-11-24 22:00:29,998 INFO L158 Benchmark]: TraceAbstraction took 34077.31ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 88.9MB in the beginning and 408.5MB in the end (delta: -319.5MB). Peak memory consumption was 685.0MB. Max. memory is 16.1GB. [2023-11-24 22:00:29,998 INFO L158 Benchmark]: Witness Printer took 113.67ms. Allocated memory is still 1.2GB. Free memory was 408.5MB in the beginning and 403.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 22:00:30,000 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 63.5MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 970.87ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 100.2MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.39ms. Allocated memory is still 172.0MB. Free memory was 100.2MB in the beginning and 96.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.47ms. Allocated memory is still 172.0MB. Free memory was 96.7MB in the beginning and 91.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1250.98ms. Allocated memory is still 172.0MB. Free memory was 91.8MB in the beginning and 88.9MB in the end (delta: 2.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 34077.31ms. Allocated memory was 172.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 88.9MB in the beginning and 408.5MB in the end (delta: -319.5MB). Peak memory consumption was 685.0MB. Max. memory is 16.1GB. * Witness Printer took 113.67ms. Allocated memory is still 1.2GB. Free memory was 408.5MB in the beginning and 403.2MB 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: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 866]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: 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 7 procedures, 83 locations, 13 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: 33.9s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 914 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 802 mSDsluCounter, 287 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 262 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3491 IncrementalHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 25 mSDtfsCounter, 3491 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=15, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 2948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:00:30,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccb8362b-4d19-47e2-ae69-4591ae1d73e2/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