./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi009_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/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_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi009_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/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_73a7043d-5872-4ae7-a09a-bc472571c31f/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 14d20b200dda38e95ec4ea5c7128c00d20347c5bcda51cecce271855ce0b9ab5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:54:18,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:54:18,403 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:54:18,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:54:18,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:54:18,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:54:18,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:54:18,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:54:18,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:54:18,458 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:54:18,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:54:18,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:54:18,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:54:18,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:54:18,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:54:18,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:54:18,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:54:18,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:54:18,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:54:18,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:54:18,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:54:18,468 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:54:18,469 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:54:18,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:54:18,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:54:18,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:54:18,470 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:54:18,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:54:18,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:54:18,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:54:18,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:54:18,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:54:18,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:18,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:54:18,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:54:18,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:54:18,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:54:18,476 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:54:18,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:54:18,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:54:18,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:54:18,477 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_73a7043d-5872-4ae7-a09a-bc472571c31f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14d20b200dda38e95ec4ea5c7128c00d20347c5bcda51cecce271855ce0b9ab5 [2023-11-26 11:54:18,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:54:18,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:54:18,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:54:18,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:54:18,851 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:54:18,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/rfi009_power.oepc.i [2023-11-26 11:54:21,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:54:22,261 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:54:22,262 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/sv-benchmarks/c/pthread-wmm/rfi009_power.oepc.i [2023-11-26 11:54:22,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/data/3ab4bb7d6/02eacc88f7da454a841d75cd85bed65f/FLAG090cf60ef [2023-11-26 11:54:22,307 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/data/3ab4bb7d6/02eacc88f7da454a841d75cd85bed65f [2023-11-26 11:54:22,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:54:22,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:54:22,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:22,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:54:22,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:54:22,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:22,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b18df43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22, skipping insertion in model container [2023-11-26 11:54:22,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:22,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:54:22,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:22,856 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:54:22,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:22,967 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:54:22,967 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:54:22,975 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:54:22,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22 WrapperNode [2023-11-26 11:54:22,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:22,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:22,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:54:22,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:54:22,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,071 INFO L138 Inliner]: procedures = 176, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2023-11-26 11:54:23,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:23,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:54:23,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:54:23,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:54:23,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,117 INFO L175 MemorySlicer]: Split 26 memory accesses to 5 slices as follows [2, 21, 1, 1, 1]. 81 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0, 0]. The 10 writes are split as follows [0, 7, 1, 1, 1]. [2023-11-26 11:54:23,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:54:23,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:54:23,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:54:23,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:54:23,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (1/1) ... [2023-11-26 11:54:23,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:23,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:54:23,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a7043d-5872-4ae7-a09a-bc472571c31f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:54:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:54:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:54:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:54:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:54:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:54:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:54:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:54:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:54:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:54:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:54:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:54:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:54:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:54:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:54:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:54:23,272 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:54:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:54:23,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:54:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:54:23,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:54:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:54:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:54:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:54:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:54:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:54:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:54:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:54:23,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:54:23,280 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 11:54:23,531 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:23,534 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:24,207 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:24,939 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:24,939 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:54:24,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:24 BoogieIcfgContainer [2023-11-26 11:54:24,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:24,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:24,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:24,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:24,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:54:22" (1/3) ... [2023-11-26 11:54:24,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b2b65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:24, skipping insertion in model container [2023-11-26 11:54:24,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:22" (2/3) ... [2023-11-26 11:54:24,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b2b65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:24, skipping insertion in model container [2023-11-26 11:54:24,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:24" (3/3) ... [2023-11-26 11:54:24,952 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_power.oepc.i [2023-11-26 11:54:24,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:24,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-11-26 11:54:24,980 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:54:25,167 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:54:25,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 196 flow [2023-11-26 11:54:25,290 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-11-26 11:54:25,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:54:25,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 344 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-26 11:54:25,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 196 flow [2023-11-26 11:54:25,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 89 transitions, 187 flow [2023-11-26 11:54:25,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:25,330 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;@47d88c3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:25,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2023-11-26 11:54:25,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:54:25,336 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:54:25,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:54:25,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:25,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:54:25,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:25,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 26921, now seen corresponding path program 1 times [2023-11-26 11:54:25,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:25,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504038064] [2023-11-26 11:54:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504038064] [2023-11-26 11:54:25,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504038064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:25,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:25,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:54:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100680521] [2023-11-26 11:54:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:25,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:25,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:25,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:25,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2023-11-26 11:54:25,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 11:54:25,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:25,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2023-11-26 11:54:25,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:29,620 INFO L124 PetriNetUnfolderBase]: 9214/14346 cut-off events. [2023-11-26 11:54:29,620 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-26 11:54:29,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27439 conditions, 14346 events. 9214/14346 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 118911 event pairs, 7964 based on Foata normal form. 500/7829 useless extension candidates. Maximal degree in co-relation 27425. Up to 11276 conditions per place. [2023-11-26 11:54:29,799 INFO L140 encePairwiseOnDemand]: 63/92 looper letters, 53 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-26 11:54:29,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 275 flow [2023-11-26 11:54:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-26 11:54:29,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:54:29,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-26 11:54:29,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-26 11:54:29,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:29,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-26 11:54:29,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 11:54:29,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:29,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:29,830 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 187 flow. Second operand 3 states and 184 transitions. [2023-11-26 11:54:29,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 275 flow [2023-11-26 11:54:29,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:54:29,840 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 132 flow [2023-11-26 11:54:29,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-11-26 11:54:29,847 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -27 predicate places. [2023-11-26 11:54:29,847 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 132 flow [2023-11-26 11:54:29,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 11:54:29,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:29,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:54:29,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:54:29,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:29,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash 26922, now seen corresponding path program 1 times [2023-11-26 11:54:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385643428] [2023-11-26 11:54:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:29,987 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 11:54:29,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:29,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385643428] [2023-11-26 11:54:29,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385643428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:29,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:29,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:54:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692451788] [2023-11-26 11:54:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:29,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:29,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:30,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:30,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 11:54:30,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:30,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:30,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:33,551 INFO L124 PetriNetUnfolderBase]: 9214/14345 cut-off events. [2023-11-26 11:54:33,551 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-11-26 11:54:33,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27686 conditions, 14345 events. 9214/14345 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 118780 event pairs, 7964 based on Foata normal form. 1/7329 useless extension candidates. Maximal degree in co-relation 27675. Up to 11275 conditions per place. [2023-11-26 11:54:33,663 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 52 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-26 11:54:33,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 272 flow [2023-11-26 11:54:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2023-11-26 11:54:33,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2023-11-26 11:54:33,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 136 transitions. [2023-11-26 11:54:33,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 136 transitions. [2023-11-26 11:54:33,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:33,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 136 transitions. [2023-11-26 11:54:33,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 11:54:33,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:33,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:33,683 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 132 flow. Second operand 3 states and 136 transitions. [2023-11-26 11:54:33,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 272 flow [2023-11-26 11:54:33,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:33,727 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 130 flow [2023-11-26 11:54:33,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-11-26 11:54:33,728 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -28 predicate places. [2023-11-26 11:54:33,729 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 130 flow [2023-11-26 11:54:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 11:54:33,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:33,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:54:33,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:54:33,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:33,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 802893662, now seen corresponding path program 1 times [2023-11-26 11:54:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76752562] [2023-11-26 11:54:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:33,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:33,844 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 11:54:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76752562] [2023-11-26 11:54:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76752562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413760571] [2023-11-26 11:54:33,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:33,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:33,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:33,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2023-11-26 11:54:33,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:54:33,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:33,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2023-11-26 11:54:33,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:36,871 INFO L124 PetriNetUnfolderBase]: 9218/14343 cut-off events. [2023-11-26 11:54:36,872 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-11-26 11:54:36,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27693 conditions, 14343 events. 9218/14343 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 119802 event pairs, 6281 based on Foata normal form. 0/7335 useless extension candidates. Maximal degree in co-relation 27682. Up to 11278 conditions per place. [2023-11-26 11:54:36,966 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 53 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-26 11:54:36,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 272 flow [2023-11-26 11:54:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2023-11-26 11:54:36,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2023-11-26 11:54:36,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 134 transitions. [2023-11-26 11:54:36,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 134 transitions. [2023-11-26 11:54:36,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:36,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 134 transitions. [2023-11-26 11:54:36,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 11:54:36,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:36,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:36,971 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 130 flow. Second operand 3 states and 134 transitions. [2023-11-26 11:54:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 272 flow [2023-11-26 11:54:36,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:36,990 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 128 flow [2023-11-26 11:54:36,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=128, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2023-11-26 11:54:36,991 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -29 predicate places. [2023-11-26 11:54:36,992 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 128 flow [2023-11-26 11:54:36,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:54:36,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:36,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:54:36,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:54:36,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:36,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 802893663, now seen corresponding path program 1 times [2023-11-26 11:54:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:36,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286671113] [2023-11-26 11:54:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:37,144 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 11:54:37,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286671113] [2023-11-26 11:54:37,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286671113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:37,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545063034] [2023-11-26 11:54:37,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:37,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:37,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:37,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:37,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:37,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:37,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:40,301 INFO L124 PetriNetUnfolderBase]: 9214/14335 cut-off events. [2023-11-26 11:54:40,301 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-11-26 11:54:40,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27680 conditions, 14335 events. 9214/14335 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 119533 event pairs, 5720 based on Foata normal form. 5/7335 useless extension candidates. Maximal degree in co-relation 27670. Up to 11269 conditions per place. [2023-11-26 11:54:40,403 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 52 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-11-26 11:54:40,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 268 flow [2023-11-26 11:54:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2023-11-26 11:54:40,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2023-11-26 11:54:40,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 136 transitions. [2023-11-26 11:54:40,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 136 transitions. [2023-11-26 11:54:40,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:40,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 136 transitions. [2023-11-26 11:54:40,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 11:54:40,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:40,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:40,408 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 128 flow. Second operand 3 states and 136 transitions. [2023-11-26 11:54:40,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 268 flow [2023-11-26 11:54:40,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:40,415 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 126 flow [2023-11-26 11:54:40,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=126, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-11-26 11:54:40,418 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -30 predicate places. [2023-11-26 11:54:40,418 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 126 flow [2023-11-26 11:54:40,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:40,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:40,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:54:40,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:54:40,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 802896444, now seen corresponding path program 1 times [2023-11-26 11:54:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:40,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025415823] [2023-11-26 11:54:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:40,542 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 11:54:40,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:40,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025415823] [2023-11-26 11:54:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025415823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826074653] [2023-11-26 11:54:40,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:40,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:40,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:40,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:40,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 11:54:40,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:40,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:40,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:42,072 INFO L124 PetriNetUnfolderBase]: 4498/7558 cut-off events. [2023-11-26 11:54:42,072 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-26 11:54:42,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14401 conditions, 7558 events. 4498/7558 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 62150 event pairs, 3059 based on Foata normal form. 0/4869 useless extension candidates. Maximal degree in co-relation 14390. Up to 4121 conditions per place. [2023-11-26 11:54:42,128 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 55 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-11-26 11:54:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 294 flow [2023-11-26 11:54:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-26 11:54:42,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2023-11-26 11:54:42,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-26 11:54:42,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-26 11:54:42,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:42,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-26 11:54:42,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 11:54:42,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:42,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:42,135 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 126 flow. Second operand 4 states and 181 transitions. [2023-11-26 11:54:42,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 294 flow [2023-11-26 11:54:42,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:42,141 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 178 flow [2023-11-26 11:54:42,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-11-26 11:54:42,143 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -28 predicate places. [2023-11-26 11:54:42,144 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 178 flow [2023-11-26 11:54:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 11:54:42,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:42,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:54:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:54:42,145 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash 802896445, now seen corresponding path program 1 times [2023-11-26 11:54:42,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112617641] [2023-11-26 11:54:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:42,288 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 11:54:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112617641] [2023-11-26 11:54:42,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112617641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:42,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967954127] [2023-11-26 11:54:42,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:42,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:42,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:42,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:42,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:42,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2023-11-26 11:54:42,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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 11:54:42,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2023-11-26 11:54:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:42,975 INFO L124 PetriNetUnfolderBase]: 1304/2458 cut-off events. [2023-11-26 11:54:42,975 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2023-11-26 11:54:42,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5928 conditions, 2458 events. 1304/2458 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18388 event pairs, 896 based on Foata normal form. 691/2999 useless extension candidates. Maximal degree in co-relation 5914. Up to 1052 conditions per place. [2023-11-26 11:54:42,990 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 37 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-26 11:54:42,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 264 flow [2023-11-26 11:54:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2023-11-26 11:54:42,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4320652173913043 [2023-11-26 11:54:42,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 159 transitions. [2023-11-26 11:54:42,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 159 transitions. [2023-11-26 11:54:42,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:42,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 159 transitions. [2023-11-26 11:54:42,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:42,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:42,996 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:42,996 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 178 flow. Second operand 4 states and 159 transitions. [2023-11-26 11:54:42,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 264 flow [2023-11-26 11:54:42,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:54:42,999 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 166 flow [2023-11-26 11:54:43,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=4, PETRI_FLOW=166, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-26 11:54:43,001 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -33 predicate places. [2023-11-26 11:54:43,001 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 166 flow [2023-11-26 11:54:43,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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 11:54:43,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:43,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:54:43,002 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:43,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 333104120, now seen corresponding path program 1 times [2023-11-26 11:54:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955942603] [2023-11-26 11:54:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:43,084 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 11:54:43,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:43,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955942603] [2023-11-26 11:54:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955942603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:43,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:43,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:43,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749326626] [2023-11-26 11:54:43,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:43,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:43,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:43,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:43,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:54:43,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:43,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:43,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:43,795 INFO L124 PetriNetUnfolderBase]: 1304/2423 cut-off events. [2023-11-26 11:54:43,796 INFO L125 PetriNetUnfolderBase]: For 1053/1053 co-relation queries the response was YES. [2023-11-26 11:54:43,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 2423 events. 1304/2423 cut-off events. For 1053/1053 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 18069 event pairs, 872 based on Foata normal form. 9/2296 useless extension candidates. Maximal degree in co-relation 5915. Up to 1077 conditions per place. [2023-11-26 11:54:43,812 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 37 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-26 11:54:43,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 264 flow [2023-11-26 11:54:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-26 11:54:43,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42391304347826086 [2023-11-26 11:54:43,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-26 11:54:43,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-26 11:54:43,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:43,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-26 11:54:43,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 11:54:43,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:43,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:43,819 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 166 flow. Second operand 3 states and 117 transitions. [2023-11-26 11:54:43,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 264 flow [2023-11-26 11:54:43,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:43,824 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 165 flow [2023-11-26 11:54:43,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=161, 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=165, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-26 11:54:43,826 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -34 predicate places. [2023-11-26 11:54:43,826 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 165 flow [2023-11-26 11:54:43,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:54:43,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:43,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:43,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:54:43,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:43,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash 333104119, now seen corresponding path program 1 times [2023-11-26 11:54:43,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:43,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960450840] [2023-11-26 11:54:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:43,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:43,897 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 11:54:43,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:43,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960450840] [2023-11-26 11:54:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960450840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:43,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:43,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686686430] [2023-11-26 11:54:43,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:43,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:43,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2023-11-26 11:54:43,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 11:54:43,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:43,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2023-11-26 11:54:43,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:44,500 INFO L124 PetriNetUnfolderBase]: 1316/2438 cut-off events. [2023-11-26 11:54:44,500 INFO L125 PetriNetUnfolderBase]: For 1065/1065 co-relation queries the response was YES. [2023-11-26 11:54:44,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 2438 events. 1316/2438 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 18182 event pairs, 878 based on Foata normal form. 0/2299 useless extension candidates. Maximal degree in co-relation 6002. Up to 1077 conditions per place. [2023-11-26 11:54:44,516 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 38 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-26 11:54:44,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 265 flow [2023-11-26 11:54:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-26 11:54:44,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-26 11:54:44,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-26 11:54:44,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-26 11:54:44,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:44,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-26 11:54:44,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 11:54:44,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:44,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:44,521 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 165 flow. Second operand 3 states and 115 transitions. [2023-11-26 11:54:44,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 265 flow [2023-11-26 11:54:44,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:44,524 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 163 flow [2023-11-26 11:54:44,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=159, 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=163, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-26 11:54:44,524 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -35 predicate places. [2023-11-26 11:54:44,525 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 163 flow [2023-11-26 11:54:44,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 11:54:44,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:44,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:54:44,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:44,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash -488244167, now seen corresponding path program 1 times [2023-11-26 11:54:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:44,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265321556] [2023-11-26 11:54:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:44,629 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 11:54:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265321556] [2023-11-26 11:54:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265321556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:44,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:54:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965923870] [2023-11-26 11:54:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:44,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:44,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2023-11-26 11:54:44,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 11:54:44,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:44,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2023-11-26 11:54:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:45,262 INFO L124 PetriNetUnfolderBase]: 1246/2576 cut-off events. [2023-11-26 11:54:45,262 INFO L125 PetriNetUnfolderBase]: For 896/904 co-relation queries the response was YES. [2023-11-26 11:54:45,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6001 conditions, 2576 events. 1246/2576 cut-off events. For 896/904 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 20641 event pairs, 432 based on Foata normal form. 0/2448 useless extension candidates. Maximal degree in co-relation 5987. Up to 1359 conditions per place. [2023-11-26 11:54:45,281 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 53 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-26 11:54:45,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 369 flow [2023-11-26 11:54:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2023-11-26 11:54:45,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2023-11-26 11:54:45,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2023-11-26 11:54:45,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2023-11-26 11:54:45,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:45,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2023-11-26 11:54:45,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:45,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:45,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:45,285 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 163 flow. Second operand 3 states and 135 transitions. [2023-11-26 11:54:45,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 369 flow [2023-11-26 11:54:45,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:45,288 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 172 flow [2023-11-26 11:54:45,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-11-26 11:54:45,290 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -34 predicate places. [2023-11-26 11:54:45,290 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 172 flow [2023-11-26 11:54:45,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 11:54:45,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:45,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:45,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:54:45,291 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:45,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:45,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1808465077, now seen corresponding path program 1 times [2023-11-26 11:54:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654411055] [2023-11-26 11:54:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:45,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:45,396 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 11:54:45,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654411055] [2023-11-26 11:54:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654411055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:45,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:45,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:45,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112563018] [2023-11-26 11:54:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:45,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:45,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:45,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2023-11-26 11:54:45,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 11:54:45,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:45,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2023-11-26 11:54:45,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:46,169 INFO L124 PetriNetUnfolderBase]: 1280/2718 cut-off events. [2023-11-26 11:54:46,169 INFO L125 PetriNetUnfolderBase]: For 1165/1173 co-relation queries the response was YES. [2023-11-26 11:54:46,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 2718 events. 1280/2718 cut-off events. For 1165/1173 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 22383 event pairs, 304 based on Foata normal form. 0/2664 useless extension candidates. Maximal degree in co-relation 6590. Up to 972 conditions per place. [2023-11-26 11:54:46,191 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 45 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2023-11-26 11:54:46,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 332 flow [2023-11-26 11:54:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2023-11-26 11:54:46,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2023-11-26 11:54:46,194 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 166 transitions. [2023-11-26 11:54:46,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 166 transitions. [2023-11-26 11:54:46,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:46,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 166 transitions. [2023-11-26 11:54:46,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 11:54:46,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:46,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:46,197 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 172 flow. Second operand 4 states and 166 transitions. [2023-11-26 11:54:46,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 332 flow [2023-11-26 11:54:46,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:46,201 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 184 flow [2023-11-26 11:54:46,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-11-26 11:54:46,202 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -34 predicate places. [2023-11-26 11:54:46,202 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 184 flow [2023-11-26 11:54:46,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 11:54:46,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:46,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:46,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:54:46,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:46,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1051102904, now seen corresponding path program 1 times [2023-11-26 11:54:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:46,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081581112] [2023-11-26 11:54:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:46,564 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 11:54:46,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081581112] [2023-11-26 11:54:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081581112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:46,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:46,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:46,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145220104] [2023-11-26 11:54:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:46,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:46,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2023-11-26 11:54:46,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 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 11:54:46,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:46,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2023-11-26 11:54:46,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:47,370 INFO L124 PetriNetUnfolderBase]: 1234/2568 cut-off events. [2023-11-26 11:54:47,370 INFO L125 PetriNetUnfolderBase]: For 1413/1421 co-relation queries the response was YES. [2023-11-26 11:54:47,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 2568 events. 1234/2568 cut-off events. For 1413/1421 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20265 event pairs, 612 based on Foata normal form. 24/2542 useless extension candidates. Maximal degree in co-relation 6482. Up to 1378 conditions per place. [2023-11-26 11:54:47,386 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 51 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-11-26 11:54:47,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 378 flow [2023-11-26 11:54:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-11-26 11:54:47,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2023-11-26 11:54:47,388 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 160 transitions. [2023-11-26 11:54:47,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 160 transitions. [2023-11-26 11:54:47,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:47,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 160 transitions. [2023-11-26 11:54:47,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:47,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:47,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:54:47,392 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 184 flow. Second operand 4 states and 160 transitions. [2023-11-26 11:54:47,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 378 flow [2023-11-26 11:54:47,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:47,395 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 176 flow [2023-11-26 11:54:47,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2023-11-26 11:54:47,396 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -34 predicate places. [2023-11-26 11:54:47,396 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 176 flow [2023-11-26 11:54:47,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 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 11:54:47,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:47,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:54:47,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:47,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:47,398 INFO L85 PathProgramCache]: Analyzing trace with hash -868683520, now seen corresponding path program 1 times [2023-11-26 11:54:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:47,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748659245] [2023-11-26 11:54:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:47,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:48,184 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 11:54:48,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748659245] [2023-11-26 11:54:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748659245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:48,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:54:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763044904] [2023-11-26 11:54:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:48,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:54:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:54:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:48,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2023-11-26 11:54:48,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:48,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:48,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2023-11-26 11:54:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:49,508 INFO L124 PetriNetUnfolderBase]: 1921/3734 cut-off events. [2023-11-26 11:54:49,508 INFO L125 PetriNetUnfolderBase]: For 1939/1949 co-relation queries the response was YES. [2023-11-26 11:54:49,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 3734 events. 1921/3734 cut-off events. For 1939/1949 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 30350 event pairs, 755 based on Foata normal form. 0/3565 useless extension candidates. Maximal degree in co-relation 9265. Up to 1308 conditions per place. [2023-11-26 11:54:49,535 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 73 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2023-11-26 11:54:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 518 flow [2023-11-26 11:54:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:54:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2023-11-26 11:54:49,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37888198757763975 [2023-11-26 11:54:49,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2023-11-26 11:54:49,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2023-11-26 11:54:49,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:49,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2023-11-26 11:54:49,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 11:54:49,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:54:49,543 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:54:49,543 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 176 flow. Second operand 7 states and 244 transitions. [2023-11-26 11:54:49,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 518 flow [2023-11-26 11:54:49,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:49,548 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 251 flow [2023-11-26 11:54:49,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2023-11-26 11:54:49,549 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -25 predicate places. [2023-11-26 11:54:49,549 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 251 flow [2023-11-26 11:54:49,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:49,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:49,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:49,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:54:49,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:49,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash -868685143, now seen corresponding path program 1 times [2023-11-26 11:54:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944985164] [2023-11-26 11:54:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:49,810 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 11:54:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944985164] [2023-11-26 11:54:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944985164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:49,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:49,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379873439] [2023-11-26 11:54:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:49,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2023-11-26 11:54:49,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 11:54:49,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:49,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2023-11-26 11:54:49,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:51,165 INFO L124 PetriNetUnfolderBase]: 3669/6786 cut-off events. [2023-11-26 11:54:51,165 INFO L125 PetriNetUnfolderBase]: For 5801/5967 co-relation queries the response was YES. [2023-11-26 11:54:51,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18838 conditions, 6786 events. 3669/6786 cut-off events. For 5801/5967 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 58709 event pairs, 838 based on Foata normal form. 0/6579 useless extension candidates. Maximal degree in co-relation 18817. Up to 2861 conditions per place. [2023-11-26 11:54:51,208 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 100 selfloop transitions, 17 changer transitions 1/135 dead transitions. [2023-11-26 11:54:51,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 135 transitions, 884 flow [2023-11-26 11:54:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:54:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:54:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 299 transitions. [2023-11-26 11:54:51,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2023-11-26 11:54:51,211 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 299 transitions. [2023-11-26 11:54:51,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 299 transitions. [2023-11-26 11:54:51,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:51,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 299 transitions. [2023-11-26 11:54:51,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.375) internal successors, (299), 8 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 11:54:51,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:54:51,216 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:54:51,216 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 251 flow. Second operand 8 states and 299 transitions. [2023-11-26 11:54:51,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 135 transitions, 884 flow [2023-11-26 11:54:51,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 135 transitions, 882 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 11:54:51,239 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 384 flow [2023-11-26 11:54:51,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-11-26 11:54:51,240 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -14 predicate places. [2023-11-26 11:54:51,240 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 384 flow [2023-11-26 11:54:51,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 11:54:51,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:51,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:54:51,241 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:51,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1159383878, now seen corresponding path program 1 times [2023-11-26 11:54:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628848999] [2023-11-26 11:54:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:51,603 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 11:54:51,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628848999] [2023-11-26 11:54:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628848999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:54:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145284647] [2023-11-26 11:54:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:51,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:51,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 11:54:51,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:51,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:51,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:52,673 INFO L124 PetriNetUnfolderBase]: 1952/3684 cut-off events. [2023-11-26 11:54:52,673 INFO L125 PetriNetUnfolderBase]: For 4861/5006 co-relation queries the response was YES. [2023-11-26 11:54:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10649 conditions, 3684 events. 1952/3684 cut-off events. For 4861/5006 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 29753 event pairs, 759 based on Foata normal form. 198/3773 useless extension candidates. Maximal degree in co-relation 10622. Up to 1619 conditions per place. [2023-11-26 11:54:52,699 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 34 selfloop transitions, 8 changer transitions 10/74 dead transitions. [2023-11-26 11:54:52,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 486 flow [2023-11-26 11:54:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:54:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2023-11-26 11:54:52,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641304347826087 [2023-11-26 11:54:52,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 201 transitions. [2023-11-26 11:54:52,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 201 transitions. [2023-11-26 11:54:52,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:52,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 201 transitions. [2023-11-26 11:54:52,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 11:54:52,704 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 11:54:52,704 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 384 flow. Second operand 6 states and 201 transitions. [2023-11-26 11:54:52,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 486 flow [2023-11-26 11:54:52,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 74 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:52,739 INFO L231 Difference]: Finished difference. Result has 81 places, 54 transitions, 255 flow [2023-11-26 11:54:52,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2023-11-26 11:54:52,740 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -16 predicate places. [2023-11-26 11:54:52,741 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 255 flow [2023-11-26 11:54:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 11:54:52,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:52,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:52,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:54:52,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:52,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:52,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1088005137, now seen corresponding path program 1 times [2023-11-26 11:54:52,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167762663] [2023-11-26 11:54:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:52,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:53,381 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 11:54:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167762663] [2023-11-26 11:54:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167762663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:53,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:54:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492047452] [2023-11-26 11:54:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:54:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:54:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:54:53,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2023-11-26 11:54:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 255 flow. Second operand has 9 states, 9 states have (on average 25.77777777777778) internal successors, (232), 9 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2023-11-26 11:54:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:54,788 INFO L124 PetriNetUnfolderBase]: 2395/4603 cut-off events. [2023-11-26 11:54:54,788 INFO L125 PetriNetUnfolderBase]: For 4512/4514 co-relation queries the response was YES. [2023-11-26 11:54:54,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12232 conditions, 4603 events. 2395/4603 cut-off events. For 4512/4514 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 38428 event pairs, 1089 based on Foata normal form. 108/4636 useless extension candidates. Maximal degree in co-relation 12204. Up to 1668 conditions per place. [2023-11-26 11:54:54,820 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 53 selfloop transitions, 7 changer transitions 19/94 dead transitions. [2023-11-26 11:54:54,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 582 flow [2023-11-26 11:54:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:54:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2023-11-26 11:54:54,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2023-11-26 11:54:54,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2023-11-26 11:54:54,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2023-11-26 11:54:54,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:54,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2023-11-26 11:54:54,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 11:54:54,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:54:54,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:54:54,827 INFO L175 Difference]: Start difference. First operand has 81 places, 54 transitions, 255 flow. Second operand 7 states and 233 transitions. [2023-11-26 11:54:54,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 582 flow [2023-11-26 11:54:54,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 541 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-11-26 11:54:54,842 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 217 flow [2023-11-26 11:54:54,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2023-11-26 11:54:54,844 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -17 predicate places. [2023-11-26 11:54:54,844 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 217 flow [2023-11-26 11:54:54,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.77777777777778) internal successors, (232), 9 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:54,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:54,844 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 11:54:54,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:54:54,845 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:54,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:54,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2013338582, now seen corresponding path program 1 times [2023-11-26 11:54:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346241765] [2023-11-26 11:54:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:55,193 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 11:54:55,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:55,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346241765] [2023-11-26 11:54:55,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346241765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:55,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:55,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:55,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444790603] [2023-11-26 11:54:55,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:55,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:55,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:55,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 11:54:55,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:55,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:55,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:56,280 INFO L124 PetriNetUnfolderBase]: 2109/3971 cut-off events. [2023-11-26 11:54:56,280 INFO L125 PetriNetUnfolderBase]: For 2291/2300 co-relation queries the response was YES. [2023-11-26 11:54:56,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10058 conditions, 3971 events. 2109/3971 cut-off events. For 2291/2300 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 31752 event pairs, 1049 based on Foata normal form. 74/3950 useless extension candidates. Maximal degree in co-relation 10032. Up to 2156 conditions per place. [2023-11-26 11:54:56,318 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 40 selfloop transitions, 6 changer transitions 29/94 dead transitions. [2023-11-26 11:54:56,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 523 flow [2023-11-26 11:54:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:54:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:54:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2023-11-26 11:54:56,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38858695652173914 [2023-11-26 11:54:56,321 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 286 transitions. [2023-11-26 11:54:56,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 286 transitions. [2023-11-26 11:54:56,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:56,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 286 transitions. [2023-11-26 11:54:56,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 11:54:56,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:54:56,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:54:56,326 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 217 flow. Second operand 8 states and 286 transitions. [2023-11-26 11:54:56,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 523 flow [2023-11-26 11:54:56,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 485 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-11-26 11:54:56,344 INFO L231 Difference]: Finished difference. Result has 78 places, 49 transitions, 215 flow [2023-11-26 11:54:56,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=215, PETRI_PLACES=78, PETRI_TRANSITIONS=49} [2023-11-26 11:54:56,345 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -19 predicate places. [2023-11-26 11:54:56,346 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 49 transitions, 215 flow [2023-11-26 11:54:56,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 11:54:56,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:56,346 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 11:54:56,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:54:56,347 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:56,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:56,347 INFO L85 PathProgramCache]: Analyzing trace with hash -688100125, now seen corresponding path program 1 times [2023-11-26 11:54:56,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:56,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239471584] [2023-11-26 11:54:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:56,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:57,487 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 11:54:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239471584] [2023-11-26 11:54:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239471584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:57,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:57,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:54:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064724664] [2023-11-26 11:54:57,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:57,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 92 [2023-11-26 11:54:57,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 49 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 11:54:57,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:57,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 92 [2023-11-26 11:54:57,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:58,577 INFO L124 PetriNetUnfolderBase]: 2024/3704 cut-off events. [2023-11-26 11:54:58,577 INFO L125 PetriNetUnfolderBase]: For 2446/2455 co-relation queries the response was YES. [2023-11-26 11:54:58,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 3704 events. 2024/3704 cut-off events. For 2446/2455 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 29316 event pairs, 262 based on Foata normal form. 98/3780 useless extension candidates. Maximal degree in co-relation 9683. Up to 1778 conditions per place. [2023-11-26 11:54:58,598 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 62 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2023-11-26 11:54:58,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 554 flow [2023-11-26 11:54:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:54:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:54:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2023-11-26 11:54:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780193236714976 [2023-11-26 11:54:58,601 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 313 transitions. [2023-11-26 11:54:58,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 313 transitions. [2023-11-26 11:54:58,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:58,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 313 transitions. [2023-11-26 11:54:58,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 11:54:58,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 11:54:58,605 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 11:54:58,606 INFO L175 Difference]: Start difference. First operand has 78 places, 49 transitions, 215 flow. Second operand 9 states and 313 transitions. [2023-11-26 11:54:58,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 554 flow [2023-11-26 11:54:58,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 509 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-26 11:54:58,633 INFO L231 Difference]: Finished difference. Result has 79 places, 59 transitions, 309 flow [2023-11-26 11:54:58,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=309, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2023-11-26 11:54:58,633 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -18 predicate places. [2023-11-26 11:54:58,634 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 309 flow [2023-11-26 11:54:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 11:54:58,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:58,634 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 11:54:58,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:54:58,634 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:54:58,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash -105207574, now seen corresponding path program 1 times [2023-11-26 11:54:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145822442] [2023-11-26 11:54:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:00,260 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 11:55:00,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145822442] [2023-11-26 11:55:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145822442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:55:00,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901226491] [2023-11-26 11:55:00,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:55:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:55:00,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:00,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2023-11-26 11:55:00,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 309 flow. Second operand has 11 states, 11 states have (on average 24.454545454545453) internal successors, (269), 11 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:00,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:00,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2023-11-26 11:55:00,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:01,627 INFO L124 PetriNetUnfolderBase]: 1837/3560 cut-off events. [2023-11-26 11:55:01,627 INFO L125 PetriNetUnfolderBase]: For 3584/3593 co-relation queries the response was YES. [2023-11-26 11:55:01,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 3560 events. 1837/3560 cut-off events. For 3584/3593 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 28848 event pairs, 976 based on Foata normal form. 84/3568 useless extension candidates. Maximal degree in co-relation 9731. Up to 2584 conditions per place. [2023-11-26 11:55:01,651 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 36 selfloop transitions, 12 changer transitions 23/88 dead transitions. [2023-11-26 11:55:01,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 571 flow [2023-11-26 11:55:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:55:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2023-11-26 11:55:01,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32065217391304346 [2023-11-26 11:55:01,654 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 236 transitions. [2023-11-26 11:55:01,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 236 transitions. [2023-11-26 11:55:01,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:01,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 236 transitions. [2023-11-26 11:55:01,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 29.5) internal successors, (236), 8 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:01,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:55:01,657 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:55:01,657 INFO L175 Difference]: Start difference. First operand has 79 places, 59 transitions, 309 flow. Second operand 8 states and 236 transitions. [2023-11-26 11:55:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 571 flow [2023-11-26 11:55:01,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 567 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-26 11:55:01,668 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 271 flow [2023-11-26 11:55:01,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2023-11-26 11:55:01,669 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -11 predicate places. [2023-11-26 11:55:01,669 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 271 flow [2023-11-26 11:55:01,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.454545454545453) internal successors, (269), 11 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:01,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:01,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:01,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:55:01,670 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:55:01,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1158544164, now seen corresponding path program 1 times [2023-11-26 11:55:01,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524486702] [2023-11-26 11:55:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:01,923 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 11:55:01,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:01,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524486702] [2023-11-26 11:55:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524486702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:01,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:01,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618082076] [2023-11-26 11:55:01,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:01,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2023-11-26 11:55:01,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 11:55:01,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:01,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2023-11-26 11:55:01,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:03,105 INFO L124 PetriNetUnfolderBase]: 4389/7275 cut-off events. [2023-11-26 11:55:03,105 INFO L125 PetriNetUnfolderBase]: For 8867/8878 co-relation queries the response was YES. [2023-11-26 11:55:03,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19939 conditions, 7275 events. 4389/7275 cut-off events. For 8867/8878 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 51254 event pairs, 436 based on Foata normal form. 296/7548 useless extension candidates. Maximal degree in co-relation 19910. Up to 4063 conditions per place. [2023-11-26 11:55:03,149 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 65 selfloop transitions, 5 changer transitions 1/86 dead transitions. [2023-11-26 11:55:03,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 650 flow [2023-11-26 11:55:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:55:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-26 11:55:03,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2023-11-26 11:55:03,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-26 11:55:03,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-26 11:55:03,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:03,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-26 11:55:03,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 11:55:03,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:55:03,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:55:03,153 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 271 flow. Second operand 4 states and 144 transitions. [2023-11-26 11:55:03,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 650 flow [2023-11-26 11:55:03,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 589 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-11-26 11:55:03,177 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 273 flow [2023-11-26 11:55:03,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-11-26 11:55:03,178 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -24 predicate places. [2023-11-26 11:55:03,178 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 273 flow [2023-11-26 11:55:03,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 11:55:03,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:03,179 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 11:55:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:55:03,179 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:55:03,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1636821025, now seen corresponding path program 1 times [2023-11-26 11:55:03,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:03,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437235739] [2023-11-26 11:55:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437235739] [2023-11-26 11:55:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437235739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096139057] [2023-11-26 11:55:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:03,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:03,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:03,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:03,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2023-11-26 11:55:03,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 11:55:03,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:03,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2023-11-26 11:55:03,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:04,524 INFO L124 PetriNetUnfolderBase]: 3038/5151 cut-off events. [2023-11-26 11:55:04,524 INFO L125 PetriNetUnfolderBase]: For 5358/5369 co-relation queries the response was YES. [2023-11-26 11:55:04,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14950 conditions, 5151 events. 3038/5151 cut-off events. For 5358/5369 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33833 event pairs, 177 based on Foata normal form. 257/5386 useless extension candidates. Maximal degree in co-relation 14926. Up to 2173 conditions per place. [2023-11-26 11:55:04,565 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 74 selfloop transitions, 8 changer transitions 1/98 dead transitions. [2023-11-26 11:55:04,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 98 transitions, 701 flow [2023-11-26 11:55:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:55:04,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-26 11:55:04,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934782608695652 [2023-11-26 11:55:04,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-26 11:55:04,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-26 11:55:04,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:55:04,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-26 11:55:04,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 11:55:04,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 11:55:04,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 11:55:04,571 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 273 flow. Second operand 5 states and 181 transitions. [2023-11-26 11:55:04,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 98 transitions, 701 flow [2023-11-26 11:55:04,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 691 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 11:55:04,580 INFO L231 Difference]: Finished difference. Result has 77 places, 56 transitions, 313 flow [2023-11-26 11:55:04,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2023-11-26 11:55:04,581 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -20 predicate places. [2023-11-26 11:55:04,581 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 313 flow [2023-11-26 11:55:04,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 11:55:04,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:55:04,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:04,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:55:04,582 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-26 11:55:04,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1428666884, now seen corresponding path program 1 times [2023-11-26 11:55:04,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:04,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035582528] [2023-11-26 11:55:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035582528] [2023-11-26 11:55:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035582528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:04,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:04,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:04,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860638098] [2023-11-26 11:55:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:04,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:04,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 92 [2023-11-26 11:55:04,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:04,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:55:04,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 92 [2023-11-26 11:55:04,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:55:06,257 INFO L124 PetriNetUnfolderBase]: 3714/7025 cut-off events. [2023-11-26 11:55:06,257 INFO L125 PetriNetUnfolderBase]: For 6537/6720 co-relation queries the response was YES.