./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_tso.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_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya --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 f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:15:33,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:15:33,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:15:33,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:15:33,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:15:33,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:15:33,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:15:33,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:15:33,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:15:33,317 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:15:33,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:15:33,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:15:33,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:15:33,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:15:33,320 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:15:33,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:15:33,321 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:15:33,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:15:33,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:15:33,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:15:33,323 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:15:33,324 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:15:33,324 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:15:33,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:15:33,325 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:15:33,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:15:33,326 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:15:33,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:15:33,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:15:33,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:15:33,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:15:33,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:15:33,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:33,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:15:33,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:15:33,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:15:33,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:15:33,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:15:33,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:15:33,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:15:33,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:15:33,330 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_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2023-11-29 01:15:33,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:15:33,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:15:33,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:15:33,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:15:33,585 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:15:33,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2023-11-29 01:15:36,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:15:36,578 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:15:36,579 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2023-11-29 01:15:36,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/data/581e68fa1/25a3f77324e04b1d9e08baa3a33fc07a/FLAGc2e445a24 [2023-11-29 01:15:36,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/data/581e68fa1/25a3f77324e04b1d9e08baa3a33fc07a [2023-11-29 01:15:36,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:15:36,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:15:36,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:36,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:15:36,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:15:36,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:36" (1/1) ... [2023-11-29 01:15:36,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a968de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:36, skipping insertion in model container [2023-11-29 01:15:36,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:36" (1/1) ... [2023-11-29 01:15:36,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:15:37,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:37,254 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:15:37,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:37,325 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:15:37,325 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:15:37,331 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:15:37,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37 WrapperNode [2023-11-29 01:15:37,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:37,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:37,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:15:37,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:15:37,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,373 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-11-29 01:15:37,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:37,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:15:37,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:15:37,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:15:37,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,403 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]. [2023-11-29 01:15:37,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:15:37,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:15:37,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:15:37,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:15:37,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (1/1) ... [2023-11-29 01:15:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:37,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:15:37,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:15:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:15:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:15:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:15:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:15:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:15:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:15:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:15:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:15:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 01:15:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 01:15:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 01:15:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 01:15:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 01:15:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 01:15:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:15:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:15:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:15:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:15:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:15:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:15:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:15:37,494 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:15:37,633 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:15:37,635 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:15:37,821 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:15:37,913 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:15:37,913 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:15:37,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:37 BoogieIcfgContainer [2023-11-29 01:15:37,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:15:37,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:15:37,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:15:37,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:15:37,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:15:36" (1/3) ... [2023-11-29 01:15:37,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfbf2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:37, skipping insertion in model container [2023-11-29 01:15:37,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:37" (2/3) ... [2023-11-29 01:15:37,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfbf2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:37, skipping insertion in model container [2023-11-29 01:15:37,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:37" (3/3) ... [2023-11-29 01:15:37,924 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-11-29 01:15:37,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:15:37,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 01:15:37,940 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:15:37,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:15:38,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 118 flow [2023-11-29 01:15:38,048 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-29 01:15:38,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:15:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-29 01:15:38,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 118 flow [2023-11-29 01:15:38,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 49 transitions, 107 flow [2023-11-29 01:15:38,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:15:38,075 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;@2b71c535, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:15:38,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 01:15:38,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:15:38,079 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 01:15:38,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:15:38,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:38,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 01:15:38,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:38,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash 7469, now seen corresponding path program 1 times [2023-11-29 01:15:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:38,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530832603] [2023-11-29 01:15:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:38,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530832603] [2023-11-29 01:15:38,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530832603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:38,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:38,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:15:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006485638] [2023-11-29 01:15:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:38,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:38,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2023-11-29 01:15:38,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2023-11-29 01:15:38,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:38,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2023-11-29 01:15:38,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:38,579 INFO L124 PetriNetUnfolderBase]: 75/248 cut-off events. [2023-11-29 01:15:38,579 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 01:15:38,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 248 events. 75/248 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1414 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 390. Up to 117 conditions per place. [2023-11-29 01:15:38,585 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 16 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-29 01:15:38,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 141 flow [2023-11-29 01:15:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:15:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 01:15:38,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-29 01:15:38,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 01:15:38,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 01:15:38,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:38,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 01:15:38,606 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) [2023-11-29 01:15:38,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,612 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 107 flow. Second operand 3 states and 120 transitions. [2023-11-29 01:15:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 141 flow [2023-11-29 01:15:38,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:15:38,618 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-29 01:15:38,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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} [2023-11-29 01:15:38,624 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-29 01:15:38,625 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-29 01:15:38,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2023-11-29 01:15:38,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:38,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 01:15:38,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:15:38,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:38,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash 7470, now seen corresponding path program 1 times [2023-11-29 01:15:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:38,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67242416] [2023-11-29 01:15:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:38,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67242416] [2023-11-29 01:15:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67242416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:38,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:15:38,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506086614] [2023-11-29 01:15:38,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:38,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:38,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2023-11-29 01:15:38,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:38,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2023-11-29 01:15:38,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:38,830 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-29 01:15:38,831 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 01:15:38,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 247 events. 75/247 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1398 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-29 01:15:38,834 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 15 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 01:15:38,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 138 flow [2023-11-29 01:15:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:15:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 01:15:38,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-29 01:15:38,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 01:15:38,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 01:15:38,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:38,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 01:15:38,839 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) [2023-11-29 01:15:38,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,841 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 120 transitions. [2023-11-29 01:15:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 138 flow [2023-11-29 01:15:38,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:15:38,844 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-29 01:15:38,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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} [2023-11-29 01:15:38,846 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2023-11-29 01:15:38,846 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-29 01:15:38,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:38,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:15:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:15:38,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:38,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash 222727818, now seen corresponding path program 1 times [2023-11-29 01:15:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023471066] [2023-11-29 01:15:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:38,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023471066] [2023-11-29 01:15:38,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023471066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:38,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:38,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133042977] [2023-11-29 01:15:38,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:38,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:38,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:38,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:38,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:38,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2023-11-29 01:15:38,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:38,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2023-11-29 01:15:38,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:38,994 INFO L124 PetriNetUnfolderBase]: 76/246 cut-off events. [2023-11-29 01:15:38,994 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 01:15:38,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 246 events. 76/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1380 event pairs, 42 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 400. Up to 116 conditions per place. [2023-11-29 01:15:38,997 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 16 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-29 01:15:38,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 138 flow [2023-11-29 01:15:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:15:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-29 01:15:38,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2023-11-29 01:15:38,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-29 01:15:38,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-29 01:15:39,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:39,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-29 01:15:39,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,002 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 118 transitions. [2023-11-29 01:15:39,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 138 flow [2023-11-29 01:15:39,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:15:39,005 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-29 01:15:39,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-29 01:15:39,006 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2023-11-29 01:15:39,006 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-29 01:15:39,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:39,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:15:39,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:15:39,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:39,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 222727819, now seen corresponding path program 1 times [2023-11-29 01:15:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076843949] [2023-11-29 01:15:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:39,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:39,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076843949] [2023-11-29 01:15:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076843949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:39,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:39,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813587576] [2023-11-29 01:15:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:39,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:39,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2023-11-29 01:15:39,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:39,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2023-11-29 01:15:39,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:39,161 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-29 01:15:39,161 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 01:15:39,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 242 events. 75/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1356 event pairs, 62 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 395. Up to 113 conditions per place. [2023-11-29 01:15:39,164 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 15 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 01:15:39,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 134 flow [2023-11-29 01:15:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:15:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 01:15:39,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-29 01:15:39,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 01:15:39,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 01:15:39,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:39,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 01:15:39,167 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) [2023-11-29 01:15:39,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,168 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 120 transitions. [2023-11-29 01:15:39,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 134 flow [2023-11-29 01:15:39,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:15:39,170 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-29 01:15:39,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-29 01:15:39,171 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2023-11-29 01:15:39,172 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-29 01:15:39,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:39,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:39,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:15:39,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:39,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash -439829213, now seen corresponding path program 1 times [2023-11-29 01:15:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055705125] [2023-11-29 01:15:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:39,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:39,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:39,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055705125] [2023-11-29 01:15:39,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055705125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:39,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:39,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831844950] [2023-11-29 01:15:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:39,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:39,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2023-11-29 01:15:39,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:39,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2023-11-29 01:15:39,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:39,306 INFO L124 PetriNetUnfolderBase]: 79/243 cut-off events. [2023-11-29 01:15:39,306 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 01:15:39,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 243 events. 79/243 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1358 event pairs, 27 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 404. Up to 112 conditions per place. [2023-11-29 01:15:39,309 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 16 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-29 01:15:39,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 134 flow [2023-11-29 01:15:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:15:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-29 01:15:39,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2023-11-29 01:15:39,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-29 01:15:39,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-29 01:15:39,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:39,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-29 01:15:39,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,313 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 118 transitions. [2023-11-29 01:15:39,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 134 flow [2023-11-29 01:15:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:15:39,315 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-29 01:15:39,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-29 01:15:39,316 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2023-11-29 01:15:39,316 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-29 01:15:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:39,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:15:39,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:39,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -439829212, now seen corresponding path program 1 times [2023-11-29 01:15:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566782824] [2023-11-29 01:15:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:39,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:39,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566782824] [2023-11-29 01:15:39,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566782824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:39,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:39,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644412356] [2023-11-29 01:15:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:39,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:39,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:39,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2023-11-29 01:15:39,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:39,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2023-11-29 01:15:39,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:39,461 INFO L124 PetriNetUnfolderBase]: 75/219 cut-off events. [2023-11-29 01:15:39,461 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 01:15:39,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 219 events. 75/219 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1131 event pairs, 60 based on Foata normal form. 4/212 useless extension candidates. Maximal degree in co-relation 374. Up to 104 conditions per place. [2023-11-29 01:15:39,464 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 15 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-29 01:15:39,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 130 flow [2023-11-29 01:15:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:15:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 01:15:39,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-29 01:15:39,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 01:15:39,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 01:15:39,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:39,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 01:15:39,466 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) [2023-11-29 01:15:39,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,467 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 120 transitions. [2023-11-29 01:15:39,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 130 flow [2023-11-29 01:15:39,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:15:39,469 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-29 01:15:39,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-29 01:15:39,470 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2023-11-29 01:15:39,470 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-29 01:15:39,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:39,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:39,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:15:39,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:39,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash -875097954, now seen corresponding path program 1 times [2023-11-29 01:15:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:39,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406228926] [2023-11-29 01:15:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:39,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406228926] [2023-11-29 01:15:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406228926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:39,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:15:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764590377] [2023-11-29 01:15:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:39,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:15:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:15:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:15:40,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 53 [2023-11-29 01:15:40,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:40,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 53 [2023-11-29 01:15:40,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:40,266 INFO L124 PetriNetUnfolderBase]: 120/314 cut-off events. [2023-11-29 01:15:40,266 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 01:15:40,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 314 events. 120/314 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1840 event pairs, 10 based on Foata normal form. 12/315 useless extension candidates. Maximal degree in co-relation 544. Up to 112 conditions per place. [2023-11-29 01:15:40,269 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 20 selfloop transitions, 4 changer transitions 6/53 dead transitions. [2023-11-29 01:15:40,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 178 flow [2023-11-29 01:15:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:15:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:15:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2023-11-29 01:15:40,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6873315363881402 [2023-11-29 01:15:40,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 255 transitions. [2023-11-29 01:15:40,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 255 transitions. [2023-11-29 01:15:40,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:40,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 255 transitions. [2023-11-29 01:15:40,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,275 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 7 states and 255 transitions. [2023-11-29 01:15:40,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 178 flow [2023-11-29 01:15:40,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:15:40,277 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 90 flow [2023-11-29 01:15:40,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-11-29 01:15:40,278 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2023-11-29 01:15:40,278 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 90 flow [2023-11-29 01:15:40,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:40,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:40,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:15:40,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:40,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash -875096696, now seen corresponding path program 1 times [2023-11-29 01:15:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:40,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124154132] [2023-11-29 01:15:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124154132] [2023-11-29 01:15:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124154132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:40,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:40,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527092515] [2023-11-29 01:15:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:40,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:40,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2023-11-29 01:15:40,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:40,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2023-11-29 01:15:40,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:40,694 INFO L124 PetriNetUnfolderBase]: 413/802 cut-off events. [2023-11-29 01:15:40,694 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-29 01:15:40,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 802 events. 413/802 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5282 event pairs, 100 based on Foata normal form. 0/766 useless extension candidates. Maximal degree in co-relation 1540. Up to 397 conditions per place. [2023-11-29 01:15:40,700 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 23 selfloop transitions, 3 changer transitions 30/76 dead transitions. [2023-11-29 01:15:40,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 298 flow [2023-11-29 01:15:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:15:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:15:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 298 transitions. [2023-11-29 01:15:40,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2023-11-29 01:15:40,703 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 298 transitions. [2023-11-29 01:15:40,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 298 transitions. [2023-11-29 01:15:40,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:40,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 298 transitions. [2023-11-29 01:15:40,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,707 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 90 flow. Second operand 8 states and 298 transitions. [2023-11-29 01:15:40,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 298 flow [2023-11-29 01:15:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 281 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:15:40,709 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 117 flow [2023-11-29 01:15:40,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=117, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2023-11-29 01:15:40,710 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-29 01:15:40,710 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 117 flow [2023-11-29 01:15:40,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:40,711 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] [2023-11-29 01:15:40,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:15:40,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:40,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash -253747769, now seen corresponding path program 1 times [2023-11-29 01:15:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:40,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520515663] [2023-11-29 01:15:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:40,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520515663] [2023-11-29 01:15:40,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520515663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:40,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:40,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:15:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458010666] [2023-11-29 01:15:40,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:40,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:15:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:15:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:40,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2023-11-29 01:15:40,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:40,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2023-11-29 01:15:40,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:41,270 INFO L124 PetriNetUnfolderBase]: 599/1197 cut-off events. [2023-11-29 01:15:41,270 INFO L125 PetriNetUnfolderBase]: For 871/871 co-relation queries the response was YES. [2023-11-29 01:15:41,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2857 conditions, 1197 events. 599/1197 cut-off events. For 871/871 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7720 event pairs, 57 based on Foata normal form. 33/1209 useless extension candidates. Maximal degree in co-relation 2841. Up to 489 conditions per place. [2023-11-29 01:15:41,283 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 45 selfloop transitions, 11 changer transitions 42/117 dead transitions. [2023-11-29 01:15:41,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 117 transitions, 603 flow [2023-11-29 01:15:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:15:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:15:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 477 transitions. [2023-11-29 01:15:41,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-29 01:15:41,286 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 477 transitions. [2023-11-29 01:15:41,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 477 transitions. [2023-11-29 01:15:41,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:41,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 477 transitions. [2023-11-29 01:15:41,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 36.69230769230769) internal successors, (477), 13 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,291 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,291 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 117 flow. Second operand 13 states and 477 transitions. [2023-11-29 01:15:41,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 117 transitions, 603 flow [2023-11-29 01:15:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 117 transitions, 574 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-29 01:15:41,299 INFO L231 Difference]: Finished difference. Result has 72 places, 47 transitions, 236 flow [2023-11-29 01:15:41,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=236, PETRI_PLACES=72, PETRI_TRANSITIONS=47} [2023-11-29 01:15:41,300 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2023-11-29 01:15:41,300 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 47 transitions, 236 flow [2023-11-29 01:15:41,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:41,301 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] [2023-11-29 01:15:41,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:15:41,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:41,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -624278620, now seen corresponding path program 1 times [2023-11-29 01:15:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140882593] [2023-11-29 01:15:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140882593] [2023-11-29 01:15:41,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140882593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:41,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:41,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:15:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575139808] [2023-11-29 01:15:41,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:41,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:15:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:41,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:15:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:41,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-29 01:15:41,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 47 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:41,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-29 01:15:41,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:41,756 INFO L124 PetriNetUnfolderBase]: 466/1005 cut-off events. [2023-11-29 01:15:41,757 INFO L125 PetriNetUnfolderBase]: For 3769/3774 co-relation queries the response was YES. [2023-11-29 01:15:41,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 1005 events. 466/1005 cut-off events. For 3769/3774 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6661 event pairs, 74 based on Foata normal form. 50/1012 useless extension candidates. Maximal degree in co-relation 3430. Up to 208 conditions per place. [2023-11-29 01:15:41,769 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 5 changer transitions 37/87 dead transitions. [2023-11-29 01:15:41,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 534 flow [2023-11-29 01:15:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:15:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:15:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 368 transitions. [2023-11-29 01:15:41,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6943396226415094 [2023-11-29 01:15:41,772 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 368 transitions. [2023-11-29 01:15:41,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 368 transitions. [2023-11-29 01:15:41,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:41,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 368 transitions. [2023-11-29 01:15:41,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.8) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,777 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,777 INFO L175 Difference]: Start difference. First operand has 72 places, 47 transitions, 236 flow. Second operand 10 states and 368 transitions. [2023-11-29 01:15:41,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 534 flow [2023-11-29 01:15:41,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 87 transitions, 472 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-11-29 01:15:41,790 INFO L231 Difference]: Finished difference. Result has 74 places, 41 transitions, 189 flow [2023-11-29 01:15:41,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=189, PETRI_PLACES=74, PETRI_TRANSITIONS=41} [2023-11-29 01:15:41,792 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2023-11-29 01:15:41,792 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 41 transitions, 189 flow [2023-11-29 01:15:41,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:41,793 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] [2023-11-29 01:15:41,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:15:41,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:41,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1098283089, now seen corresponding path program 1 times [2023-11-29 01:15:41,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:41,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280305773] [2023-11-29 01:15:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:41,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280305773] [2023-11-29 01:15:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280305773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957670656] [2023-11-29 01:15:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:41,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:41,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-29 01:15:41,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 41 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:41,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:41,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-29 01:15:41,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:42,091 INFO L124 PetriNetUnfolderBase]: 512/982 cut-off events. [2023-11-29 01:15:42,092 INFO L125 PetriNetUnfolderBase]: For 1959/1994 co-relation queries the response was YES. [2023-11-29 01:15:42,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 982 events. 512/982 cut-off events. For 1959/1994 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5498 event pairs, 157 based on Foata normal form. 36/972 useless extension candidates. Maximal degree in co-relation 2687. Up to 465 conditions per place. [2023-11-29 01:15:42,105 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 27 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-11-29 01:15:42,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 287 flow [2023-11-29 01:15:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:15:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2023-11-29 01:15:42,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7452830188679245 [2023-11-29 01:15:42,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 158 transitions. [2023-11-29 01:15:42,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 158 transitions. [2023-11-29 01:15:42,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:42,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 158 transitions. [2023-11-29 01:15:42,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,110 INFO L175 Difference]: Start difference. First operand has 74 places, 41 transitions, 189 flow. Second operand 4 states and 158 transitions. [2023-11-29 01:15:42,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 287 flow [2023-11-29 01:15:42,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 255 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-11-29 01:15:42,127 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 195 flow [2023-11-29 01:15:42,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-11-29 01:15:42,128 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-11-29 01:15:42,128 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 195 flow [2023-11-29 01:15:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:42,129 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] [2023-11-29 01:15:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:15:42,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:42,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -985911596, now seen corresponding path program 1 times [2023-11-29 01:15:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:42,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548182186] [2023-11-29 01:15:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548182186] [2023-11-29 01:15:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548182186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:42,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:42,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:42,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206134533] [2023-11-29 01:15:42,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:42,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:42,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-29 01:15:42,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 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) [2023-11-29 01:15:42,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:42,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-29 01:15:42,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:42,447 INFO L124 PetriNetUnfolderBase]: 398/803 cut-off events. [2023-11-29 01:15:42,447 INFO L125 PetriNetUnfolderBase]: For 860/1143 co-relation queries the response was YES. [2023-11-29 01:15:42,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 803 events. 398/803 cut-off events. For 860/1143 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4143 event pairs, 33 based on Foata normal form. 42/806 useless extension candidates. Maximal degree in co-relation 2186. Up to 277 conditions per place. [2023-11-29 01:15:42,457 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 34 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2023-11-29 01:15:42,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 342 flow [2023-11-29 01:15:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:15:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:15:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2023-11-29 01:15:42,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7509433962264151 [2023-11-29 01:15:42,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2023-11-29 01:15:42,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2023-11-29 01:15:42,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:42,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2023-11-29 01:15:42,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,462 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 195 flow. Second operand 5 states and 199 transitions. [2023-11-29 01:15:42,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 342 flow [2023-11-29 01:15:42,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 330 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 01:15:42,467 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 238 flow [2023-11-29 01:15:42,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2023-11-29 01:15:42,469 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2023-11-29 01:15:42,470 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 238 flow [2023-11-29 01:15:42,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 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) [2023-11-29 01:15:42,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:42,470 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] [2023-11-29 01:15:42,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:15:42,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:42,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash -967901576, now seen corresponding path program 1 times [2023-11-29 01:15:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:42,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439898827] [2023-11-29 01:15:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:42,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:42,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439898827] [2023-11-29 01:15:42,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439898827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:42,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:42,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:15:42,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031400619] [2023-11-29 01:15:42,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:42,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:15:42,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:42,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:15:42,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:42,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-29 01:15:42,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:42,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-29 01:15:42,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:42,831 INFO L124 PetriNetUnfolderBase]: 282/559 cut-off events. [2023-11-29 01:15:42,832 INFO L125 PetriNetUnfolderBase]: For 912/1509 co-relation queries the response was YES. [2023-11-29 01:15:42,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 559 events. 282/559 cut-off events. For 912/1509 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2477 event pairs, 13 based on Foata normal form. 39/563 useless extension candidates. Maximal degree in co-relation 1697. Up to 200 conditions per place. [2023-11-29 01:15:42,837 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2023-11-29 01:15:42,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 375 flow [2023-11-29 01:15:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:15:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:15:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2023-11-29 01:15:42,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7295597484276729 [2023-11-29 01:15:42,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 232 transitions. [2023-11-29 01:15:42,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 232 transitions. [2023-11-29 01:15:42,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:42,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 232 transitions. [2023-11-29 01:15:42,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,842 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,842 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 238 flow. Second operand 6 states and 232 transitions. [2023-11-29 01:15:42,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 375 flow [2023-11-29 01:15:42,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 346 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-29 01:15:42,846 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 254 flow [2023-11-29 01:15:42,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-11-29 01:15:42,847 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2023-11-29 01:15:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 254 flow [2023-11-29 01:15:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:42,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:42,848 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] [2023-11-29 01:15:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:15:42,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:42,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash -763213927, now seen corresponding path program 1 times [2023-11-29 01:15:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:42,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976408264] [2023-11-29 01:15:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:42,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:43,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:43,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976408264] [2023-11-29 01:15:43,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976408264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:43,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:43,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:15:43,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186216350] [2023-11-29 01:15:43,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:43,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:15:43,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:15:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:43,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2023-11-29 01:15:43,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:43,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2023-11-29 01:15:43,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:43,267 INFO L124 PetriNetUnfolderBase]: 433/924 cut-off events. [2023-11-29 01:15:43,267 INFO L125 PetriNetUnfolderBase]: For 1683/1822 co-relation queries the response was YES. [2023-11-29 01:15:43,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 924 events. 433/924 cut-off events. For 1683/1822 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5443 event pairs, 132 based on Foata normal form. 21/824 useless extension candidates. Maximal degree in co-relation 2691. Up to 392 conditions per place. [2023-11-29 01:15:43,276 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 27 selfloop transitions, 7 changer transitions 18/80 dead transitions. [2023-11-29 01:15:43,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 459 flow [2023-11-29 01:15:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:15:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:15:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 253 transitions. [2023-11-29 01:15:43,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6819407008086253 [2023-11-29 01:15:43,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 253 transitions. [2023-11-29 01:15:43,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 253 transitions. [2023-11-29 01:15:43,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:43,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 253 transitions. [2023-11-29 01:15:43,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,282 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 254 flow. Second operand 7 states and 253 transitions. [2023-11-29 01:15:43,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 459 flow [2023-11-29 01:15:43,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 419 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-29 01:15:43,289 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 256 flow [2023-11-29 01:15:43,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2023-11-29 01:15:43,290 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2023-11-29 01:15:43,290 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 256 flow [2023-11-29 01:15:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:15:43,291 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] [2023-11-29 01:15:43,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:15:43,291 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 01:15:43,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1941321295, now seen corresponding path program 2 times [2023-11-29 01:15:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:15:43,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407344239] [2023-11-29 01:15:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:15:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:43,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:15:43,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407344239] [2023-11-29 01:15:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407344239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:43,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:15:43,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016447724] [2023-11-29 01:15:43,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:15:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:15:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:15:43,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:43,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2023-11-29 01:15:43,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:15:43,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2023-11-29 01:15:43,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:15:43,660 INFO L124 PetriNetUnfolderBase]: 318/741 cut-off events. [2023-11-29 01:15:43,660 INFO L125 PetriNetUnfolderBase]: For 1150/1198 co-relation queries the response was YES. [2023-11-29 01:15:43,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 741 events. 318/741 cut-off events. For 1150/1198 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4518 event pairs, 58 based on Foata normal form. 14/693 useless extension candidates. Maximal degree in co-relation 2181. Up to 211 conditions per place. [2023-11-29 01:15:43,664 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-11-29 01:15:43,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 370 flow [2023-11-29 01:15:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:15:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:15:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2023-11-29 01:15:43,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6361185983827493 [2023-11-29 01:15:43,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 236 transitions. [2023-11-29 01:15:43,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 236 transitions. [2023-11-29 01:15:43,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:15:43,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 236 transitions. [2023-11-29 01:15:43,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,670 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 256 flow. Second operand 7 states and 236 transitions. [2023-11-29 01:15:43,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 370 flow [2023-11-29 01:15:43,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 363 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 01:15:43,674 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2023-11-29 01:15:43,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=7, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2023-11-29 01:15:43,675 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-11-29 01:15:43,675 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2023-11-29 01:15:43,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:43,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-29 01:15:43,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-29 01:15:43,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-29 01:15:43,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-29 01:15:43,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-29 01:15:43,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-29 01:15:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-29 01:15:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-29 01:15:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-29 01:15:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-29 01:15:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-29 01:15:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:15:43,681 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:43,685 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:15:43,685 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:15:43,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:15:43 BasicIcfg [2023-11-29 01:15:43,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:15:43,691 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:15:43,691 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:15:43,692 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:15:43,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:37" (3/4) ... [2023-11-29 01:15:43,694 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:15:43,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 01:15:43,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 01:15:43,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-29 01:15:43,703 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-29 01:15:43,703 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 01:15:43,704 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 01:15:43,704 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 01:15:43,794 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:15:43,794 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:15:43,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:15:43,795 INFO L158 Benchmark]: Toolchain (without parser) took 6886.32ms. Allocated memory was 201.3MB in the beginning and 253.8MB in the end (delta: 52.4MB). Free memory was 156.3MB in the beginning and 205.2MB in the end (delta: -48.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,795 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 173.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:15:43,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.30ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 135.7MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,796 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.89ms. Allocated memory is still 201.3MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,797 INFO L158 Benchmark]: Boogie Preprocessor took 45.96ms. Allocated memory is still 201.3MB. Free memory was 133.6MB in the beginning and 131.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,797 INFO L158 Benchmark]: RCFGBuilder took 492.24ms. Allocated memory is still 201.3MB. Free memory was 131.2MB in the beginning and 108.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,798 INFO L158 Benchmark]: TraceAbstraction took 5773.88ms. Allocated memory was 201.3MB in the beginning and 253.8MB in the end (delta: 52.4MB). Free memory was 107.5MB in the beginning and 210.4MB in the end (delta: -102.9MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,798 INFO L158 Benchmark]: Witness Printer took 103.21ms. Allocated memory is still 253.8MB. Free memory was 210.4MB in the beginning and 205.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:15:43,800 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 173.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.30ms. Allocated memory is still 201.3MB. Free memory was 156.0MB in the beginning and 135.7MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.89ms. Allocated memory is still 201.3MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.96ms. Allocated memory is still 201.3MB. Free memory was 133.6MB in the beginning and 131.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 492.24ms. Allocated memory is still 201.3MB. Free memory was 131.2MB in the beginning and 108.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5773.88ms. Allocated memory was 201.3MB in the beginning and 253.8MB in the end (delta: 52.4MB). Free memory was 107.5MB in the beginning and 210.4MB in the end (delta: -102.9MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. * Witness Printer took 103.21ms. Allocated memory is still 253.8MB. Free memory was 210.4MB in the beginning and 205.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 780]: 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, 77 locations, 11 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: 5.7s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 612 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 489 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1261 IncrementalHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 60 mSDtfsCounter, 1261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=14, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 251 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 1391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 01:15:43,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4276323d-0441-4bc5-822d-b270421f085b/bin/uautomizer-verify-BQ2R08f2Ya/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