./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/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_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/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_46688d43-3f13-4822-a720-96759db2a20b/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 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:56:42,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:56:42,489 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:56:42,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:56:42,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:56:42,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:56:42,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:56:42,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:56:42,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:56:42,553 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:56:42,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:56:42,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:56:42,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:56:42,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:56:42,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:56:42,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:56:42,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:56:42,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:56:42,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:56:42,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:56:42,564 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:56:42,564 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:56:42,565 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:56:42,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:56:42,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:56:42,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:56:42,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:56:42,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:56:42,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:56:42,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:56:42,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:56:42,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:56:42,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:42,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:56:42,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:56:42,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:56:42,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:56:42,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:56:42,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:56:42,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:56:42,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:56:42,601 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_46688d43-3f13-4822-a720-96759db2a20b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa [2023-11-26 11:56:42,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:56:42,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:56:42,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:56:42,978 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:56:42,979 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:56:42,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix030_tso.i [2023-11-26 11:56:46,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:56:46,369 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:56:46,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/sv-benchmarks/c/pthread-wmm/mix030_tso.i [2023-11-26 11:56:46,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/data/af6bf4ec7/6149a8a1fc36411e8ae1bb703b93bea1/FLAGebc8407f9 [2023-11-26 11:56:46,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/data/af6bf4ec7/6149a8a1fc36411e8ae1bb703b93bea1 [2023-11-26 11:56:46,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:56:46,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:56:46,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:46,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:56:46,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:56:46,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:46" (1/1) ... [2023-11-26 11:56:46,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f03318e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:46, skipping insertion in model container [2023-11-26 11:56:46,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:46" (1/1) ... [2023-11-26 11:56:46,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:56:46,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:46,941 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:56:47,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:47,081 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:56:47,081 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:56:47,090 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:56:47,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47 WrapperNode [2023-11-26 11:56:47,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:47,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:47,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:56:47,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:56:47,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,193 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 185 [2023-11-26 11:56:47,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:47,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:56:47,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:56:47,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:56:47,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,293 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 11:56:47,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:56:47,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:56:47,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:56:47,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:56:47,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (1/1) ... [2023-11-26 11:56:47,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:47,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:47,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46688d43-3f13-4822-a720-96759db2a20b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:56:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:56:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:56:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:56:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:56:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:56:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:56:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:56:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:56:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:56:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:56:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:56:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:56:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:56:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:56:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:56:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:56:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:56:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:56:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:56:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:56:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:56:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:56:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:56:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:56:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:56:47,455 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 11:56:47,612 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:56:47,615 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:48,062 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:48,348 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:48,349 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:56:48,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:48 BoogieIcfgContainer [2023-11-26 11:56:48,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:48,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:56:48,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:56:48,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:56:48,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:56:46" (1/3) ... [2023-11-26 11:56:48,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232c5651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:48, skipping insertion in model container [2023-11-26 11:56:48,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:47" (2/3) ... [2023-11-26 11:56:48,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232c5651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:48, skipping insertion in model container [2023-11-26 11:56:48,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:48" (3/3) ... [2023-11-26 11:56:48,363 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_tso.i [2023-11-26 11:56:48,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:56:48,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-26 11:56:48,385 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:56:48,483 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:56:48,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 66 transitions, 148 flow [2023-11-26 11:56:48,585 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-26 11:56:48,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:56:48,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-26 11:56:48,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 66 transitions, 148 flow [2023-11-26 11:56:48,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 62 transitions, 136 flow [2023-11-26 11:56:48,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:48,612 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;@5dd5f16f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:48,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 11:56:48,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:56:48,617 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:56:48,617 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:56:48,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:48,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:56:48,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:48,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 14417, now seen corresponding path program 1 times [2023-11-26 11:56:48,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:48,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757937660] [2023-11-26 11:56:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:48,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:48,987 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 11:56:48,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:48,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757937660] [2023-11-26 11:56:48,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757937660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:48,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613365099] [2023-11-26 11:56:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:49,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:49,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:49,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:49,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-26 11:56:49,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 11:56:49,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:49,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-26 11:56:49,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:49,932 INFO L124 PetriNetUnfolderBase]: 1599/2779 cut-off events. [2023-11-26 11:56:49,933 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-26 11:56:49,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 2779 events. 1599/2779 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 21273 event pairs, 1239 based on Foata normal form. 144/2746 useless extension candidates. Maximal degree in co-relation 5093. Up to 1781 conditions per place. [2023-11-26 11:56:49,972 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 11:56:49,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 216 flow [2023-11-26 11:56:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:56:49,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-26 11:56:49,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:56:49,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:56:49,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:49,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:56:50,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:56:50,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:50,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:50,006 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 136 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:56:50,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 216 flow [2023-11-26 11:56:50,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:56:50,014 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-26 11:56:50,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-26 11:56:50,022 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-26 11:56:50,022 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-26 11:56:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 11:56:50,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:50,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:56:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:56:50,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:50,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash 14418, now seen corresponding path program 1 times [2023-11-26 11:56:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:50,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506769620] [2023-11-26 11:56:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:50,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:50,226 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 11:56:50,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:50,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506769620] [2023-11-26 11:56:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506769620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:50,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:50,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272353885] [2023-11-26 11:56:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:50,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:50,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:50,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:50,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-26 11:56:50,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 11:56:50,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:50,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-26 11:56:50,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:50,846 INFO L124 PetriNetUnfolderBase]: 1599/2778 cut-off events. [2023-11-26 11:56:50,846 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:56:50,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 2778 events. 1599/2778 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 21216 event pairs, 1239 based on Foata normal form. 1/2602 useless extension candidates. Maximal degree in co-relation 5165. Up to 1780 conditions per place. [2023-11-26 11:56:50,875 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-26 11:56:50,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 212 flow [2023-11-26 11:56:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:56:50,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-26 11:56:50,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:56:50,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:56:50,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:50,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:56:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:56:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:50,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:50,882 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:56:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 212 flow [2023-11-26 11:56:50,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:50,888 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-26 11:56:50,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-26 11:56:50,889 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-11-26 11:56:50,890 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-26 11:56:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 11:56:50,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:50,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:56:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:56:50,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:50,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 429948392, now seen corresponding path program 1 times [2023-11-26 11:56:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638270549] [2023-11-26 11:56:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:50,980 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 11:56:50,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:50,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638270549] [2023-11-26 11:56:50,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638270549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:50,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:50,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245762391] [2023-11-26 11:56:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:50,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:50,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:50,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:51,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-26 11:56:51,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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 11:56:51,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:51,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-26 11:56:51,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:51,639 INFO L124 PetriNetUnfolderBase]: 1600/2776 cut-off events. [2023-11-26 11:56:51,640 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:56:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 2776 events. 1600/2776 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 21157 event pairs, 1239 based on Foata normal form. 0/2603 useless extension candidates. Maximal degree in co-relation 5166. Up to 1780 conditions per place. [2023-11-26 11:56:51,676 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-26 11:56:51,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 212 flow [2023-11-26 11:56:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-26 11:56:51,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-26 11:56:51,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-26 11:56:51,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-26 11:56:51,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:51,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-26 11:56:51,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 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 11:56:51,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:51,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:51,688 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 144 transitions. [2023-11-26 11:56:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 212 flow [2023-11-26 11:56:51,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:51,696 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-26 11:56:51,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-26 11:56:51,698 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-11-26 11:56:51,698 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-26 11:56:51,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 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 11:56:51,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:51,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:56:51,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:56:51,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:51,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash 429948393, now seen corresponding path program 1 times [2023-11-26 11:56:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:51,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649893178] [2023-11-26 11:56:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:51,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:51,803 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 11:56:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649893178] [2023-11-26 11:56:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649893178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:51,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:51,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239197332] [2023-11-26 11:56:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:51,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:51,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-26 11:56:51,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 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 11:56:51,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:51,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-26 11:56:51,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:52,387 INFO L124 PetriNetUnfolderBase]: 1599/2774 cut-off events. [2023-11-26 11:56:52,387 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:56:52,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 2774 events. 1599/2774 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20898 event pairs, 1042 based on Foata normal form. 2/2604 useless extension candidates. Maximal degree in co-relation 5163. Up to 1777 conditions per place. [2023-11-26 11:56:52,422 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-26 11:56:52,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 208 flow [2023-11-26 11:56:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:56:52,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-26 11:56:52,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:56:52,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:56:52,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:52,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:56:52,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:56:52,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:52,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:52,430 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:56:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 208 flow [2023-11-26 11:56:52,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:52,438 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-26 11:56:52,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-26 11:56:52,440 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-26 11:56:52,440 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-26 11:56:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 11:56:52,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:52,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:56:52,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:52,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1000523814, now seen corresponding path program 1 times [2023-11-26 11:56:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554230657] [2023-11-26 11:56:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,553 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 11:56:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554230657] [2023-11-26 11:56:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554230657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:52,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:52,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:52,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862930922] [2023-11-26 11:56:52,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:52,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:52,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-26 11:56:52,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:52,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:52,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-26 11:56:52,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:53,127 INFO L124 PetriNetUnfolderBase]: 1603/2774 cut-off events. [2023-11-26 11:56:53,128 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:56:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5181 conditions, 2774 events. 1603/2774 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20822 event pairs, 851 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 5171. Up to 1776 conditions per place. [2023-11-26 11:56:53,156 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-26 11:56:53,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 208 flow [2023-11-26 11:56:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-26 11:56:53,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-26 11:56:53,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-26 11:56:53,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-26 11:56:53,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:53,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-26 11:56:53,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 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 11:56:53,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:53,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:53,162 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 144 transitions. [2023-11-26 11:56:53,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 208 flow [2023-11-26 11:56:53,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:53,168 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-26 11:56:53,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-26 11:56:53,171 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-11-26 11:56:53,171 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-26 11:56:53,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:53,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:53,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:53,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:56:53,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:53,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1000523815, now seen corresponding path program 1 times [2023-11-26 11:56:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:53,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462641108] [2023-11-26 11:56:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:53,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:53,305 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 11:56:53,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:53,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462641108] [2023-11-26 11:56:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462641108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:53,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:53,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:53,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406107438] [2023-11-26 11:56:53,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:53,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:53,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:53,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-26 11:56:53,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 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 11:56:53,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:53,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-26 11:56:53,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:53,817 INFO L124 PetriNetUnfolderBase]: 1599/2755 cut-off events. [2023-11-26 11:56:53,818 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:56:53,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 2755 events. 1599/2755 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20753 event pairs, 1236 based on Foata normal form. 4/2605 useless extension candidates. Maximal degree in co-relation 5146. Up to 1768 conditions per place. [2023-11-26 11:56:53,848 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-26 11:56:53,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 204 flow [2023-11-26 11:56:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:56:53,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-26 11:56:53,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:56:53,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:56:53,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:53,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:56:53,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:56:53,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:53,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:53,853 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:56:53,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 204 flow [2023-11-26 11:56:53,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:53,859 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-26 11:56:53,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-26 11:56:53,863 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-26 11:56:53,863 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-26 11:56:53,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 11:56:53,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:53,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:53,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:56:53,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:53,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash -467638683, now seen corresponding path program 1 times [2023-11-26 11:56:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497306427] [2023-11-26 11:56:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:53,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497306427] [2023-11-26 11:56:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497306427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:53,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:53,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770071269] [2023-11-26 11:56:53,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:53,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:53,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-26 11:56:53,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:53,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:53,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-26 11:56:53,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:54,530 INFO L124 PetriNetUnfolderBase]: 1619/2742 cut-off events. [2023-11-26 11:56:54,530 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:56:54,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 2742 events. 1619/2742 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19878 event pairs, 1081 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 5165. Up to 1768 conditions per place. [2023-11-26 11:56:54,555 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-26 11:56:54,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 204 flow [2023-11-26 11:56:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-26 11:56:54,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-26 11:56:54,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-26 11:56:54,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-26 11:56:54,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:54,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-26 11:56:54,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 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 11:56:54,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:54,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:54,561 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 144 transitions. [2023-11-26 11:56:54,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 204 flow [2023-11-26 11:56:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:54,565 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-26 11:56:54,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-26 11:56:54,567 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-26 11:56:54,567 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-26 11:56:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:54,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:54,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:56:54,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:54,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash -467638682, now seen corresponding path program 1 times [2023-11-26 11:56:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:54,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016051382] [2023-11-26 11:56:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:54,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:54,671 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 11:56:54,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:54,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016051382] [2023-11-26 11:56:54,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016051382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:54,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:54,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38610167] [2023-11-26 11:56:54,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:54,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:54,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:54,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-26 11:56:54,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:54,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:54,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-26 11:56:54,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:55,186 INFO L124 PetriNetUnfolderBase]: 1599/2710 cut-off events. [2023-11-26 11:56:55,186 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-26 11:56:55,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 2710 events. 1599/2710 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 19615 event pairs, 1067 based on Foata normal form. 12/2595 useless extension candidates. Maximal degree in co-relation 5109. Up to 1736 conditions per place. [2023-11-26 11:56:55,206 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-26 11:56:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 200 flow [2023-11-26 11:56:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:56:55,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-26 11:56:55,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:56:55,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:56:55,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:55,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:56:55,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:56:55,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:55,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:55,211 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:56:55,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 200 flow [2023-11-26 11:56:55,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:55,215 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-26 11:56:55,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-26 11:56:55,216 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-26 11:56:55,216 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-26 11:56:55,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:55,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:55,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:55,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:56:55,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:55,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1450353505, now seen corresponding path program 1 times [2023-11-26 11:56:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122921957] [2023-11-26 11:56:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:55,367 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 11:56:55,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:55,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122921957] [2023-11-26 11:56:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122921957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:55,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306814303] [2023-11-26 11:56:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:55,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 66 [2023-11-26 11:56:55,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:55,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:55,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 66 [2023-11-26 11:56:55,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:55,755 INFO L124 PetriNetUnfolderBase]: 1323/2238 cut-off events. [2023-11-26 11:56:55,755 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-26 11:56:55,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 2238 events. 1323/2238 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16121 event pairs, 219 based on Foata normal form. 0/2221 useless extension candidates. Maximal degree in co-relation 4241. Up to 1537 conditions per place. [2023-11-26 11:56:55,773 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 11:56:55,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 210 flow [2023-11-26 11:56:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:56:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:56:55,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2023-11-26 11:56:55,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:56:55,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:56:55,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:55,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:56:55,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:55,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:55,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 11:56:55,778 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:56:55,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 210 flow [2023-11-26 11:56:55,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:55,780 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 110 flow [2023-11-26 11:56:55,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-11-26 11:56:55,781 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-11-26 11:56:55,782 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 110 flow [2023-11-26 11:56:55,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:55,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:55,782 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 11:56:55,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:56:55,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:55,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1079431268, now seen corresponding path program 1 times [2023-11-26 11:56:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128674861] [2023-11-26 11:56:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:56,778 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 11:56:56,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:56,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128674861] [2023-11-26 11:56:56,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128674861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:56,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:56,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:56:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701357348] [2023-11-26 11:56:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:56,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:56:56,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:56:56,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:56:57,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-26 11:56:57,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 9 states, 9 states have (on average 33.888888888888886) internal successors, (305), 9 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 11:56:57,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:57,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-26 11:56:57,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:56:57,598 INFO L124 PetriNetUnfolderBase]: 1179/2033 cut-off events. [2023-11-26 11:56:57,599 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-26 11:56:57,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 2033 events. 1179/2033 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14630 event pairs, 290 based on Foata normal form. 60/2071 useless extension candidates. Maximal degree in co-relation 3860. Up to 1440 conditions per place. [2023-11-26 11:56:57,615 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 27 selfloop transitions, 4 changer transitions 9/63 dead transitions. [2023-11-26 11:56:57,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 220 flow [2023-11-26 11:56:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:56:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:56:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2023-11-26 11:56:57,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735930735930735 [2023-11-26 11:56:57,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 265 transitions. [2023-11-26 11:56:57,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 265 transitions. [2023-11-26 11:56:57,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:57,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 265 transitions. [2023-11-26 11:56:57,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:57,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 11:56:57,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 11:56:57,623 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 7 states and 265 transitions. [2023-11-26 11:56:57,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 220 flow [2023-11-26 11:56:57,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:56:57,625 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 110 flow [2023-11-26 11:56:57,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=110, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-11-26 11:56:57,628 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-26 11:56:57,628 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 110 flow [2023-11-26 11:56:57,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.888888888888886) internal successors, (305), 9 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 11:56:57,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:56:57,629 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 11:56:57,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:56:57,629 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:56:57,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1079432643, now seen corresponding path program 1 times [2023-11-26 11:56:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:57,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626939381] [2023-11-26 11:56:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,870 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 11:56:58,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:58,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626939381] [2023-11-26 11:56:58,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626939381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:58,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:58,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:56:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988001616] [2023-11-26 11:56:58,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:58,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:56:58,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:56:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:56:58,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-26 11:56:58,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 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 11:56:58,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:56:58,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-26 11:56:58,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:02,788 INFO L124 PetriNetUnfolderBase]: 14869/23449 cut-off events. [2023-11-26 11:57:02,789 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-26 11:57:02,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44106 conditions, 23449 events. 14869/23449 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 189108 event pairs, 771 based on Foata normal form. 0/22979 useless extension candidates. Maximal degree in co-relation 44095. Up to 8112 conditions per place. [2023-11-26 11:57:02,948 INFO L140 encePairwiseOnDemand]: 51/66 looper letters, 51 selfloop transitions, 13 changer transitions 108/191 dead transitions. [2023-11-26 11:57:02,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 191 transitions, 754 flow [2023-11-26 11:57:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:57:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:57:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 559 transitions. [2023-11-26 11:57:02,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058080808080808 [2023-11-26 11:57:02,952 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 559 transitions. [2023-11-26 11:57:02,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 559 transitions. [2023-11-26 11:57:02,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:02,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 559 transitions. [2023-11-26 11:57:02,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 46.583333333333336) internal successors, (559), 12 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 11:57:02,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 66.0) internal successors, (858), 13 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 11:57:02,958 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 66.0) internal successors, (858), 13 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 11:57:02,958 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 110 flow. Second operand 12 states and 559 transitions. [2023-11-26 11:57:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 191 transitions, 754 flow [2023-11-26 11:57:02,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 191 transitions, 743 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:57:02,963 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 255 flow [2023-11-26 11:57:02,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=255, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2023-11-26 11:57:02,964 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2023-11-26 11:57:02,964 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 255 flow [2023-11-26 11:57:02,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 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 11:57:02,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:02,965 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 11:57:02,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:57:02,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:57:02,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:02,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2062903350, now seen corresponding path program 1 times [2023-11-26 11:57:02,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:02,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096623215] [2023-11-26 11:57:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:02,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:04,202 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 11:57:04,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:04,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096623215] [2023-11-26 11:57:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096623215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:04,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508525455] [2023-11-26 11:57:04,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:04,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:04,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:04,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:04,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-26 11:57:04,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:04,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:04,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-26 11:57:04,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:07,460 INFO L124 PetriNetUnfolderBase]: 11094/18200 cut-off events. [2023-11-26 11:57:07,460 INFO L125 PetriNetUnfolderBase]: For 34605/34605 co-relation queries the response was YES. [2023-11-26 11:57:07,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59504 conditions, 18200 events. 11094/18200 cut-off events. For 34605/34605 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 146666 event pairs, 947 based on Foata normal form. 388/18551 useless extension candidates. Maximal degree in co-relation 59482. Up to 8056 conditions per place. [2023-11-26 11:57:07,671 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 57 selfloop transitions, 23 changer transitions 70/169 dead transitions. [2023-11-26 11:57:07,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 169 transitions, 1231 flow [2023-11-26 11:57:07,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:57:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:57:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2023-11-26 11:57:07,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6984848484848485 [2023-11-26 11:57:07,675 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 461 transitions. [2023-11-26 11:57:07,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 461 transitions. [2023-11-26 11:57:07,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:07,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 461 transitions. [2023-11-26 11:57:07,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.1) internal successors, (461), 10 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 11:57:07,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:57:07,682 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:57:07,682 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 255 flow. Second operand 10 states and 461 transitions. [2023-11-26 11:57:07,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 169 transitions, 1231 flow [2023-11-26 11:57:07,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 169 transitions, 1125 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-11-26 11:57:07,810 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 447 flow [2023-11-26 11:57:07,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2023-11-26 11:57:07,814 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2023-11-26 11:57:07,814 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 447 flow [2023-11-26 11:57:07,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:07,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:07,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:07,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:57:07,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:57:07,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1229480911, now seen corresponding path program 1 times [2023-11-26 11:57:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883235044] [2023-11-26 11:57:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:08,876 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 11:57:08,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883235044] [2023-11-26 11:57:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883235044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:08,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:08,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:57:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262415669] [2023-11-26 11:57:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:08,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-26 11:57:08,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 447 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 11:57:08,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:08,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-26 11:57:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:12,723 INFO L124 PetriNetUnfolderBase]: 13580/22091 cut-off events. [2023-11-26 11:57:12,723 INFO L125 PetriNetUnfolderBase]: For 66968/66968 co-relation queries the response was YES. [2023-11-26 11:57:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83018 conditions, 22091 events. 13580/22091 cut-off events. For 66968/66968 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 184627 event pairs, 2610 based on Foata normal form. 420/22097 useless extension candidates. Maximal degree in co-relation 82989. Up to 7053 conditions per place. [2023-11-26 11:57:12,958 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 64 selfloop transitions, 29 changer transitions 76/188 dead transitions. [2023-11-26 11:57:12,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 188 transitions, 1607 flow [2023-11-26 11:57:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:57:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:57:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 456 transitions. [2023-11-26 11:57:12,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2023-11-26 11:57:12,964 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 456 transitions. [2023-11-26 11:57:12,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 456 transitions. [2023-11-26 11:57:12,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:12,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 456 transitions. [2023-11-26 11:57:12,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.6) internal successors, (456), 10 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 11:57:12,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:57:12,972 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:57:12,973 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 447 flow. Second operand 10 states and 456 transitions. [2023-11-26 11:57:12,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 188 transitions, 1607 flow [2023-11-26 11:57:13,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 188 transitions, 1543 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-11-26 11:57:13,638 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 721 flow [2023-11-26 11:57:13,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=721, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-11-26 11:57:13,639 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2023-11-26 11:57:13,639 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 721 flow [2023-11-26 11:57:13,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 11:57:13,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:13,640 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 11:57:13,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:57:13,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:57:13,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash -769800197, now seen corresponding path program 1 times [2023-11-26 11:57:13,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:13,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728329776] [2023-11-26 11:57:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:13,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:14,727 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 11:57:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:14,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728329776] [2023-11-26 11:57:14,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728329776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:14,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:14,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:57:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812370646] [2023-11-26 11:57:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:14,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:14,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:14,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-26 11:57:14,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 11:57:14,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:14,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-26 11:57:14,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:18,399 INFO L124 PetriNetUnfolderBase]: 12596/20818 cut-off events. [2023-11-26 11:57:18,400 INFO L125 PetriNetUnfolderBase]: For 100559/100568 co-relation queries the response was YES. [2023-11-26 11:57:18,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88083 conditions, 20818 events. 12596/20818 cut-off events. For 100559/100568 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 174030 event pairs, 2087 based on Foata normal form. 516/21221 useless extension candidates. Maximal degree in co-relation 88049. Up to 7049 conditions per place. [2023-11-26 11:57:18,594 INFO L140 encePairwiseOnDemand]: 53/66 looper letters, 71 selfloop transitions, 27 changer transitions 89/206 dead transitions. [2023-11-26 11:57:18,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 206 transitions, 2299 flow [2023-11-26 11:57:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:57:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:57:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2023-11-26 11:57:18,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6621212121212121 [2023-11-26 11:57:18,597 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 437 transitions. [2023-11-26 11:57:18,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 437 transitions. [2023-11-26 11:57:18,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:18,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 437 transitions. [2023-11-26 11:57:18,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.7) internal successors, (437), 10 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 11:57:18,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:57:18,602 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 11:57:18,602 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 721 flow. Second operand 10 states and 437 transitions. [2023-11-26 11:57:18,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 206 transitions, 2299 flow [2023-11-26 11:57:19,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 206 transitions, 2201 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-26 11:57:19,098 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 1032 flow [2023-11-26 11:57:19,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1032, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2023-11-26 11:57:19,099 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 26 predicate places. [2023-11-26 11:57:19,099 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 1032 flow [2023-11-26 11:57:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 11:57:19,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:19,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:19,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:57:19,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:57:19,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -485277249, now seen corresponding path program 1 times [2023-11-26 11:57:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:19,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627106369] [2023-11-26 11:57:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:57:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627106369] [2023-11-26 11:57:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627106369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:19,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:19,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395948308] [2023-11-26 11:57:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:19,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:19,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:19,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2023-11-26 11:57:19,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 1032 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:19,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:19,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2023-11-26 11:57:19,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:25,792 INFO L124 PetriNetUnfolderBase]: 28434/42380 cut-off events. [2023-11-26 11:57:25,792 INFO L125 PetriNetUnfolderBase]: For 224074/234936 co-relation queries the response was YES. [2023-11-26 11:57:26,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161801 conditions, 42380 events. 28434/42380 cut-off events. For 224074/234936 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 322735 event pairs, 5096 based on Foata normal form. 3026/43901 useless extension candidates. Maximal degree in co-relation 161759. Up to 23538 conditions per place. [2023-11-26 11:57:26,549 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 92 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2023-11-26 11:57:26,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 1769 flow [2023-11-26 11:57:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:57:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:57:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-26 11:57:26,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7159090909090909 [2023-11-26 11:57:26,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-26 11:57:26,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-26 11:57:26,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:26,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-26 11:57:26,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:26,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 11:57:26,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 11:57:26,557 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 1032 flow. Second operand 4 states and 189 transitions. [2023-11-26 11:57:26,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 1769 flow [2023-11-26 11:57:28,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1720 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-26 11:57:28,203 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 1043 flow [2023-11-26 11:57:28,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1043, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2023-11-26 11:57:28,204 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 22 predicate places. [2023-11-26 11:57:28,204 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 1043 flow [2023-11-26 11:57:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:57:28,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:28,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:28,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:57:28,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:57:28,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -184475147, now seen corresponding path program 1 times [2023-11-26 11:57:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836316995] [2023-11-26 11:57:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:28,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:29,365 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 11:57:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836316995] [2023-11-26 11:57:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836316995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:29,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:57:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489846617] [2023-11-26 11:57:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:29,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:29,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-26 11:57:29,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 1043 flow. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 11:57:29,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:29,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-26 11:57:29,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand