./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme --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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:54,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:54,410 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:48:54,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:54,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:54,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:54,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:54,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:54,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:54,446 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:54,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:54,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:54,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:54,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:54,449 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:54,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:54,450 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:54,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:54,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:54,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:54,452 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:48:54,453 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:48:54,453 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:48:54,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:54,454 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:48:54,454 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:48:54,455 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:54,455 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:54,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:54,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:54,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:54,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:54,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:54,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:54,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:54,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:54,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:54,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:54,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:54,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:54,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:54,460 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_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2023-11-26 11:48:54,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:54,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:54,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:54,797 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:54,798 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:54,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix005.opt.i [2023-11-26 11:48:57,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:58,293 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:58,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2023-11-26 11:48:58,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/data/90a15bd38/95938ed4b14b4c0ca4aca55ce775a644/FLAGda2ab7e80 [2023-11-26 11:48:58,328 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/data/90a15bd38/95938ed4b14b4c0ca4aca55ce775a644 [2023-11-26 11:48:58,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:58,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:58,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:58,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:58,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:58,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:58" (1/1) ... [2023-11-26 11:48:58,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3136347e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:58, skipping insertion in model container [2023-11-26 11:48:58,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:58" (1/1) ... [2023-11-26 11:48:58,394 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:58,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:58,874 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:58,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:59,043 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:59,044 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:59,052 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:59,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59 WrapperNode [2023-11-26 11:48:59,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:59,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:59,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:59,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:59,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,162 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2023-11-26 11:48:59,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:59,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:59,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:59,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:59,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,231 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 11:48:59,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:59,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:59,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:59,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:59,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (1/1) ... [2023-11-26 11:48:59,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:59,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:59,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:59,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dde5feb1-aca0-44cf-b13b-58eaab06ffa8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:48:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:48:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:48:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:48:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:48:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:48:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:48:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:48:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:48:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:48:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:48:59,367 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:48:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:48:59,367 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:48:59,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:48:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:48:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:48:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:48:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:48:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:59,371 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:48:59,571 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:59,574 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:00,100 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:00,392 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:00,392 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:49:00,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:00 BoogieIcfgContainer [2023-11-26 11:49:00,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:00,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:00,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:00,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:00,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:58" (1/3) ... [2023-11-26 11:49:00,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c160d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:00, skipping insertion in model container [2023-11-26 11:49:00,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:59" (2/3) ... [2023-11-26 11:49:00,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c160d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:00, skipping insertion in model container [2023-11-26 11:49:00,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:00" (3/3) ... [2023-11-26 11:49:00,402 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2023-11-26 11:49:00,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:00,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-26 11:49:00,424 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:49:00,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:49:00,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 67 transitions, 150 flow [2023-11-26 11:49:00,580 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-11-26 11:49:00,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:00,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-11-26 11:49:00,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 67 transitions, 150 flow [2023-11-26 11:49:00,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 63 transitions, 138 flow [2023-11-26 11:49:00,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:00,611 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;@561d3f60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:00,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 11:49:00,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:49:00,615 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:49:00,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:49:00,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:00,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:49:00,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:00,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash 14648, now seen corresponding path program 1 times [2023-11-26 11:49:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097215380] [2023-11-26 11:49:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097215380] [2023-11-26 11:49:00,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097215380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:00,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:00,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632628257] [2023-11-26 11:49:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:00,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:49:01,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:01,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:01,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:49:01,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:01,726 INFO L124 PetriNetUnfolderBase]: 1419/2603 cut-off events. [2023-11-26 11:49:01,726 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-26 11:49:01,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4680 conditions, 2603 events. 1419/2603 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20405 event pairs, 1059 based on Foata normal form. 144/2586 useless extension candidates. Maximal degree in co-relation 4665. Up to 1529 conditions per place. [2023-11-26 11:49:01,761 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-26 11:49:01,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 216 flow [2023-11-26 11:49:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:49:01,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:49:01,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:49:01,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:49:01,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:49:01,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:01,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:01,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:01,790 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 138 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:49:01,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 216 flow [2023-11-26 11:49:01,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:49:01,798 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-26 11:49:01,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-26 11:49:01,804 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-26 11:49:01,804 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-26 11:49:01,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:01,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:01,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:49:01,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:01,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:01,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:01,806 INFO L85 PathProgramCache]: Analyzing trace with hash 14649, now seen corresponding path program 1 times [2023-11-26 11:49:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400210985] [2023-11-26 11:49:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:01,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:01,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400210985] [2023-11-26 11:49:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400210985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:01,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248777169] [2023-11-26 11:49:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:01,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:01,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:01,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:49:01,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:01,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:49:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:02,608 INFO L124 PetriNetUnfolderBase]: 1419/2602 cut-off events. [2023-11-26 11:49:02,609 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:49:02,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2602 events. 1419/2602 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20449 event pairs, 1059 based on Foata normal form. 1/2442 useless extension candidates. Maximal degree in co-relation 4737. Up to 1528 conditions per place. [2023-11-26 11:49:02,636 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 11:49:02,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 212 flow [2023-11-26 11:49:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:49:02,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:49:02,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:49:02,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:49:02,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:02,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:49:02,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:02,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:02,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:02,656 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:49:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 212 flow [2023-11-26 11:49:02,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:02,665 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-26 11:49:02,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-26 11:49:02,671 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2023-11-26 11:49:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-26 11:49:02,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:02,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:02,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:49:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:02,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:02,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 436829672, now seen corresponding path program 1 times [2023-11-26 11:49:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30738430] [2023-11-26 11:49:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30738430] [2023-11-26 11:49:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30738430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:02,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253175167] [2023-11-26 11:49:02,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:02,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:49:02,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 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) [2023-11-26 11:49:02,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:02,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:49:02,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:03,366 INFO L124 PetriNetUnfolderBase]: 1420/2600 cut-off events. [2023-11-26 11:49:03,367 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:49:03,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 2600 events. 1420/2600 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20363 event pairs, 1059 based on Foata normal form. 0/2443 useless extension candidates. Maximal degree in co-relation 4738. Up to 1528 conditions per place. [2023-11-26 11:49:03,396 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-26 11:49:03,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 212 flow [2023-11-26 11:49:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:49:03,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 11:49:03,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:49:03,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:49:03,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:03,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:49:03,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:03,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:03,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:03,404 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:49:03,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 212 flow [2023-11-26 11:49:03,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:03,412 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-26 11:49:03,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-26 11:49:03,414 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-11-26 11:49:03,414 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-26 11:49:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-26 11:49:03,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:03,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:49:03,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:49:03,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:03,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash 436829673, now seen corresponding path program 1 times [2023-11-26 11:49:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:03,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225524198] [2023-11-26 11:49:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:03,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:03,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:03,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225524198] [2023-11-26 11:49:03,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225524198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:03,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:03,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:03,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715483747] [2023-11-26 11:49:03,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:03,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:03,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:03,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:49:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:49:03,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:04,122 INFO L124 PetriNetUnfolderBase]: 1419/2598 cut-off events. [2023-11-26 11:49:04,122 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:49:04,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2598 events. 1419/2598 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20243 event pairs, 898 based on Foata normal form. 2/2444 useless extension candidates. Maximal degree in co-relation 4735. Up to 1525 conditions per place. [2023-11-26 11:49:04,153 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-26 11:49:04,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 208 flow [2023-11-26 11:49:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:49:04,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:49:04,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:49:04,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:49:04,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:04,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:49:04,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,158 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:49:04,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 208 flow [2023-11-26 11:49:04,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:04,164 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-26 11:49:04,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-26 11:49:04,165 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2023-11-26 11:49:04,165 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-26 11:49:04,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:04,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:04,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:04,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash -157693391, now seen corresponding path program 1 times [2023-11-26 11:49:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011113197] [2023-11-26 11:49:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:04,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:04,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011113197] [2023-11-26 11:49:04,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011113197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:04,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:04,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:04,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958374467] [2023-11-26 11:49:04,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:04,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:04,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:49:04,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 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) [2023-11-26 11:49:04,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:04,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:49:04,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:04,708 INFO L124 PetriNetUnfolderBase]: 1423/2590 cut-off events. [2023-11-26 11:49:04,708 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:49:04,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2590 events. 1423/2590 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20334 event pairs, 1060 based on Foata normal form. 0/2446 useless extension candidates. Maximal degree in co-relation 4735. Up to 1524 conditions per place. [2023-11-26 11:49:04,740 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-26 11:49:04,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 208 flow [2023-11-26 11:49:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:04,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:49:04,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 11:49:04,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:49:04,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:49:04,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:04,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:49:04,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,745 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:49:04,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 208 flow [2023-11-26 11:49:04,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:04,751 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-26 11:49:04,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-26 11:49:04,753 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-11-26 11:49:04,753 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-26 11:49:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-26 11:49:04,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:04,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:49:04,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:04,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -157693390, now seen corresponding path program 1 times [2023-11-26 11:49:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056911300] [2023-11-26 11:49:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:04,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:04,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056911300] [2023-11-26 11:49:04,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056911300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854128985] [2023-11-26 11:49:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:04,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:04,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:04,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:49:04,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:04,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:04,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:49:04,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:05,311 INFO L124 PetriNetUnfolderBase]: 1419/2590 cut-off events. [2023-11-26 11:49:05,311 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:49:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 2590 events. 1419/2590 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 19950 event pairs, 743 based on Foata normal form. 4/2448 useless extension candidates. Maximal degree in co-relation 4729. Up to 1516 conditions per place. [2023-11-26 11:49:05,342 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-26 11:49:05,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 204 flow [2023-11-26 11:49:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:49:05,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:49:05,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:49:05,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:49:05,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:05,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:49:05,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,381 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:49:05,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 204 flow [2023-11-26 11:49:05,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:05,384 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-26 11:49:05,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-26 11:49:05,385 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2023-11-26 11:49:05,386 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-26 11:49:05,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:05,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:05,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:05,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:05,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:05,387 INFO L85 PathProgramCache]: Analyzing trace with hash 850864651, now seen corresponding path program 1 times [2023-11-26 11:49:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:05,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433450549] [2023-11-26 11:49:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:05,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433450549] [2023-11-26 11:49:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433450549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:05,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:05,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:05,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654690704] [2023-11-26 11:49:05,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:05,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:05,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:49:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:05,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:49:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:05,937 INFO L124 PetriNetUnfolderBase]: 1439/2564 cut-off events. [2023-11-26 11:49:05,938 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:49:05,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2564 events. 1439/2564 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19009 event pairs, 937 based on Foata normal form. 0/2441 useless extension candidates. Maximal degree in co-relation 4735. Up to 1516 conditions per place. [2023-11-26 11:49:05,963 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-26 11:49:05,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 204 flow [2023-11-26 11:49:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:49:05,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 11:49:05,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:49:05,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:49:05,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:05,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:49:05,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,968 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:49:05,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 204 flow [2023-11-26 11:49:05,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:05,973 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-26 11:49:05,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-26 11:49:05,975 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-11-26 11:49:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-26 11:49:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:05,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:49:05,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:05,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash 850864652, now seen corresponding path program 1 times [2023-11-26 11:49:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:05,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593656417] [2023-11-26 11:49:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:06,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593656417] [2023-11-26 11:49:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593656417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:06,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:06,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849171864] [2023-11-26 11:49:06,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:06,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:06,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:06,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:49:06,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:06,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:06,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:49:06,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:06,606 INFO L124 PetriNetUnfolderBase]: 1419/2530 cut-off events. [2023-11-26 11:49:06,607 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-26 11:49:06,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 2530 events. 1419/2530 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18515 event pairs, 923 based on Foata normal form. 12/2423 useless extension candidates. Maximal degree in co-relation 4677. Up to 1484 conditions per place. [2023-11-26 11:49:06,631 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-26 11:49:06,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 200 flow [2023-11-26 11:49:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:49:06,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:49:06,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:49:06,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:49:06,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:06,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:49:06,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:06,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:06,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:06,636 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:49:06,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 200 flow [2023-11-26 11:49:06,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:06,641 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-26 11:49:06,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-26 11:49:06,642 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2023-11-26 11:49:06,642 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-26 11:49:06,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:06,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:06,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:49:06,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:06,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -787711524, now seen corresponding path program 1 times [2023-11-26 11:49:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:06,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250733879] [2023-11-26 11:49:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:06,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:06,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250733879] [2023-11-26 11:49:06,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250733879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:06,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:06,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:06,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956808896] [2023-11-26 11:49:06,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:06,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:06,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:06,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 67 [2023-11-26 11:49:06,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:06,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:06,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 67 [2023-11-26 11:49:06,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:07,224 INFO L124 PetriNetUnfolderBase]: 1175/2022 cut-off events. [2023-11-26 11:49:07,224 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-26 11:49:07,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 2022 events. 1175/2022 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14621 event pairs, 199 based on Foata normal form. 0/2001 useless extension candidates. Maximal degree in co-relation 3817. Up to 1361 conditions per place. [2023-11-26 11:49:07,243 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 30 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 11:49:07,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 206 flow [2023-11-26 11:49:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:49:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-26 11:49:07,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7711442786069652 [2023-11-26 11:49:07,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-26 11:49:07,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-26 11:49:07,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:07,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-26 11:49:07,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:07,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:07,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:07,248 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 155 transitions. [2023-11-26 11:49:07,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 206 flow [2023-11-26 11:49:07,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:07,250 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 112 flow [2023-11-26 11:49:07,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-11-26 11:49:07,251 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -12 predicate places. [2023-11-26 11:49:07,251 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 112 flow [2023-11-26 11:49:07,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:07,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:07,252 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] [2023-11-26 11:49:07,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:49:07,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:07,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1873074494, now seen corresponding path program 1 times [2023-11-26 11:49:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238629508] [2023-11-26 11:49:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:08,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:08,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238629508] [2023-11-26 11:49:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238629508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:08,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:08,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:49:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259619712] [2023-11-26 11:49:08,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:08,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:08,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:08,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-26 11:49:08,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:08,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:08,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-26 11:49:08,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:09,718 INFO L124 PetriNetUnfolderBase]: 2563/4422 cut-off events. [2023-11-26 11:49:09,718 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-26 11:49:09,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8369 conditions, 4422 events. 2563/4422 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 34834 event pairs, 808 based on Foata normal form. 80/4489 useless extension candidates. Maximal degree in co-relation 8357. Up to 1673 conditions per place. [2023-11-26 11:49:09,748 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 53 selfloop transitions, 6 changer transitions 11/94 dead transitions. [2023-11-26 11:49:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 350 flow [2023-11-26 11:49:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:49:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 359 transitions. [2023-11-26 11:49:09,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6697761194029851 [2023-11-26 11:49:09,750 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 359 transitions. [2023-11-26 11:49:09,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 359 transitions. [2023-11-26 11:49:09,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:09,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 359 transitions. [2023-11-26 11:49:09,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.875) internal successors, (359), 8 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:09,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:09,754 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:09,754 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 112 flow. Second operand 8 states and 359 transitions. [2023-11-26 11:49:09,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 350 flow [2023-11-26 11:49:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:49:09,758 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 138 flow [2023-11-26 11:49:09,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=138, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-11-26 11:49:09,759 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-26 11:49:09,760 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 138 flow [2023-11-26 11:49:09,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:09,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:09,760 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] [2023-11-26 11:49:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:49:09,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:09,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1873073213, now seen corresponding path program 1 times [2023-11-26 11:49:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440469144] [2023-11-26 11:49:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440469144] [2023-11-26 11:49:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440469144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97611891] [2023-11-26 11:49:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:09,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:49:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:49:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:49:09,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:49:09,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:09,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:09,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:49:09,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:14,803 INFO L124 PetriNetUnfolderBase]: 26502/40723 cut-off events. [2023-11-26 11:49:14,803 INFO L125 PetriNetUnfolderBase]: For 4896/4917 co-relation queries the response was YES. [2023-11-26 11:49:14,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81741 conditions, 40723 events. 26502/40723 cut-off events. For 4896/4917 co-relation queries the response was YES. Maximal size of possible extension queue 2321. Compared 339819 event pairs, 7532 based on Foata normal form. 3/39530 useless extension candidates. Maximal degree in co-relation 81726. Up to 16516 conditions per place. [2023-11-26 11:49:15,145 INFO L140 encePairwiseOnDemand]: 54/67 looper letters, 97 selfloop transitions, 34 changer transitions 10/162 dead transitions. [2023-11-26 11:49:15,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 162 transitions, 696 flow [2023-11-26 11:49:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:49:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:49:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 436 transitions. [2023-11-26 11:49:15,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230514096185738 [2023-11-26 11:49:15,149 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 436 transitions. [2023-11-26 11:49:15,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 436 transitions. [2023-11-26 11:49:15,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:15,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 436 transitions. [2023-11-26 11:49:15,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 48.44444444444444) internal successors, (436), 9 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:15,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:15,154 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:15,155 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 138 flow. Second operand 9 states and 436 transitions. [2023-11-26 11:49:15,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 162 transitions, 696 flow [2023-11-26 11:49:15,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 162 transitions, 686 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:49:15,255 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 406 flow [2023-11-26 11:49:15,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=406, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2023-11-26 11:49:15,256 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-26 11:49:15,257 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 406 flow [2023-11-26 11:49:15,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:15,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:15,257 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] [2023-11-26 11:49:15,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:49:15,258 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:15,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 689209410, now seen corresponding path program 1 times [2023-11-26 11:49:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535443577] [2023-11-26 11:49:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:15,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535443577] [2023-11-26 11:49:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535443577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:15,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:15,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609301685] [2023-11-26 11:49:15,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:15,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:15,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:49:15,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:15,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:15,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:49:15,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:21,937 INFO L124 PetriNetUnfolderBase]: 29745/46670 cut-off events. [2023-11-26 11:49:21,937 INFO L125 PetriNetUnfolderBase]: For 82805/82889 co-relation queries the response was YES. [2023-11-26 11:49:22,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151237 conditions, 46670 events. 29745/46670 cut-off events. For 82805/82889 co-relation queries the response was YES. Maximal size of possible extension queue 2703. Compared 405083 event pairs, 3442 based on Foata normal form. 810/47295 useless extension candidates. Maximal degree in co-relation 151216. Up to 13859 conditions per place. [2023-11-26 11:49:22,309 INFO L140 encePairwiseOnDemand]: 54/67 looper letters, 134 selfloop transitions, 66 changer transitions 9/230 dead transitions. [2023-11-26 11:49:22,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 230 transitions, 1661 flow [2023-11-26 11:49:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:49:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:49:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 549 transitions. [2023-11-26 11:49:22,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6828358208955224 [2023-11-26 11:49:22,312 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 549 transitions. [2023-11-26 11:49:22,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 549 transitions. [2023-11-26 11:49:22,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:22,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 549 transitions. [2023-11-26 11:49:22,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:22,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 67.0) internal successors, (871), 13 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:22,319 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 67.0) internal successors, (871), 13 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:22,319 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 406 flow. Second operand 12 states and 549 transitions. [2023-11-26 11:49:22,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 230 transitions, 1661 flow [2023-11-26 11:49:23,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 230 transitions, 1661 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:23,456 INFO L231 Difference]: Finished difference. Result has 99 places, 134 transitions, 1032 flow [2023-11-26 11:49:23,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1032, PETRI_PLACES=99, PETRI_TRANSITIONS=134} [2023-11-26 11:49:23,457 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2023-11-26 11:49:23,458 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 134 transitions, 1032 flow [2023-11-26 11:49:23,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:23,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:23,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:49:23,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:23,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -132730924, now seen corresponding path program 1 times [2023-11-26 11:49:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571787396] [2023-11-26 11:49:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:23,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:23,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571787396] [2023-11-26 11:49:23,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571787396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:23,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:23,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:23,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825013644] [2023-11-26 11:49:23,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:23,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:23,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:23,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:49:23,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 134 transitions, 1032 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:23,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:23,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:49:23,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:32,040 INFO L124 PetriNetUnfolderBase]: 33172/52489 cut-off events. [2023-11-26 11:49:32,041 INFO L125 PetriNetUnfolderBase]: For 157562/157646 co-relation queries the response was YES. [2023-11-26 11:49:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197353 conditions, 52489 events. 33172/52489 cut-off events. For 157562/157646 co-relation queries the response was YES. Maximal size of possible extension queue 3124. Compared 467253 event pairs, 4536 based on Foata normal form. 320/52665 useless extension candidates. Maximal degree in co-relation 197322. Up to 16640 conditions per place. [2023-11-26 11:49:32,719 INFO L140 encePairwiseOnDemand]: 54/67 looper letters, 120 selfloop transitions, 79 changer transitions 133/353 dead transitions. [2023-11-26 11:49:32,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 353 transitions, 3334 flow [2023-11-26 11:49:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:49:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:49:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 564 transitions. [2023-11-26 11:49:32,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7014925373134329 [2023-11-26 11:49:32,723 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 564 transitions. [2023-11-26 11:49:32,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 564 transitions. [2023-11-26 11:49:32,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:32,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 564 transitions. [2023-11-26 11:49:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 47.0) internal successors, (564), 12 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:32,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 67.0) internal successors, (871), 13 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:32,728 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 67.0) internal successors, (871), 13 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:32,728 INFO L175 Difference]: Start difference. First operand has 99 places, 134 transitions, 1032 flow. Second operand 12 states and 564 transitions. [2023-11-26 11:49:32,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 353 transitions, 3334 flow [2023-11-26 11:49:39,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 353 transitions, 3310 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-26 11:49:39,908 INFO L231 Difference]: Finished difference. Result has 119 places, 142 transitions, 1458 flow [2023-11-26 11:49:39,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1458, PETRI_PLACES=119, PETRI_TRANSITIONS=142} [2023-11-26 11:49:39,909 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 45 predicate places. [2023-11-26 11:49:39,909 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 142 transitions, 1458 flow [2023-11-26 11:49:39,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:39,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:39,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:39,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:49:39,910 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:39,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash 534411782, now seen corresponding path program 1 times [2023-11-26 11:49:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887395895] [2023-11-26 11:49:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887395895] [2023-11-26 11:49:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887395895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:40,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:49:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254510076] [2023-11-26 11:49:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:41,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-26 11:49:41,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 142 transitions, 1458 flow. Second operand has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:41,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:41,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-26 11:49:41,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:49:45,893 INFO L124 PetriNetUnfolderBase]: 16683/29627 cut-off events. [2023-11-26 11:49:45,893 INFO L125 PetriNetUnfolderBase]: For 141803/145083 co-relation queries the response was YES. [2023-11-26 11:49:46,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118567 conditions, 29627 events. 16683/29627 cut-off events. For 141803/145083 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 289511 event pairs, 3414 based on Foata normal form. 1572/29462 useless extension candidates. Maximal degree in co-relation 118524. Up to 13001 conditions per place. [2023-11-26 11:49:46,196 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 50 selfloop transitions, 12 changer transitions 46/171 dead transitions. [2023-11-26 11:49:46,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 171 transitions, 1831 flow [2023-11-26 11:49:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:49:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:49:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2023-11-26 11:49:46,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436567164179104 [2023-11-26 11:49:46,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2023-11-26 11:49:46,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2023-11-26 11:49:46,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:49:46,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2023-11-26 11:49:46,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:46,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:46,201 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:46,202 INFO L175 Difference]: Start difference. First operand has 119 places, 142 transitions, 1458 flow. Second operand 8 states and 345 transitions. [2023-11-26 11:49:46,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 171 transitions, 1831 flow [2023-11-26 11:49:49,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 171 transitions, 1648 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-11-26 11:49:49,866 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 847 flow [2023-11-26 11:49:49,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=847, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2023-11-26 11:49:49,867 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2023-11-26 11:49:49,867 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 847 flow [2023-11-26 11:49:49,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:49,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:49:49,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:49,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:49:49,868 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:49:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 347964146, now seen corresponding path program 1 times [2023-11-26 11:49:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332173893] [2023-11-26 11:49:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332173893] [2023-11-26 11:49:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332173893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:49:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096358660] [2023-11-26 11:49:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:50,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:49:50,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:50,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:49:50,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:49:50,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand