./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.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_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:14:34,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:14:34,084 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:14:34,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:14:34,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:14:34,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:14:34,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:14:34,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:14:34,116 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:14:34,117 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:14:34,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:14:34,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:14:34,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:14:34,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:14:34,120 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:14:34,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:14:34,121 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:14:34,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:14:34,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:14:34,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:14:34,123 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:14:34,124 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:14:34,125 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:14:34,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:14:34,126 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:14:34,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:14:34,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:14:34,127 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:14:34,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:14:34,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:14:34,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:14:34,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:14:34,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:14:34,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:14:34,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:14:34,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:14:34,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:14:34,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:14:34,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:14:34,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:14:34,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:14:34,131 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_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 [2023-11-29 01:14:34,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:14:34,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:14:34,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:14:34,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:14:34,399 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:14:34,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i [2023-11-29 01:14:37,238 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:14:37,472 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:14:37,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i [2023-11-29 01:14:37,489 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/data/f27c41c49/b690509657ae493b8762201c65bdb121/FLAGf00494e70 [2023-11-29 01:14:37,504 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/data/f27c41c49/b690509657ae493b8762201c65bdb121 [2023-11-29 01:14:37,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:14:37,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:14:37,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:14:37,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:14:37,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:14:37,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:37,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73713fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37, skipping insertion in model container [2023-11-29 01:14:37,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:37,562 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:14:37,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:14:37,903 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:14:37,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:14:37,982 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:14:37,983 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:14:37,991 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:14:37,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37 WrapperNode [2023-11-29 01:14:37,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:14:37,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:14:37,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:14:37,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:14:38,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,040 INFO L138 Inliner]: procedures = 166, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2023-11-29 01:14:38,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:14:38,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:14:38,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:14:38,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:14:38,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,076 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 11, 2, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11, 0, 0, 0]. The 4 writes are split as follows [0, 1, 0, 1, 1, 1]. [2023-11-29 01:14:38,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:14:38,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:14:38,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:14:38,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:14:38,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (1/1) ... [2023-11-29 01:14:38,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:14:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:38,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:14:38,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:14:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2023-11-29 01:14:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:14:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:14:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:14:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:14:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:14:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:14:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:14:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:14:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:14:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:14:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:14:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:14:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2023-11-29 01:14:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:14:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:14:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-29 01:14:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-29 01:14:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:14:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2023-11-29 01:14:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:14:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:14:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:14:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:14:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:14:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:14:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:14:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:14:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:14:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:14:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-29 01:14:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-29 01:14:38,181 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:14:38,329 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:14:38,330 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:14:38,600 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:14:38,742 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:14:38,742 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:14:38,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:38 BoogieIcfgContainer [2023-11-29 01:14:38,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:14:38,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:14:38,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:14:38,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:14:38,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:14:37" (1/3) ... [2023-11-29 01:14:38,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce1031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:14:38, skipping insertion in model container [2023-11-29 01:14:38,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:37" (2/3) ... [2023-11-29 01:14:38,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce1031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:14:38, skipping insertion in model container [2023-11-29 01:14:38,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:38" (3/3) ... [2023-11-29 01:14:38,753 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2023-11-29 01:14:38,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:14:38,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 01:14:38,773 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:14:38,839 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 01:14:38,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 89 transitions, 206 flow [2023-11-29 01:14:38,923 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2023-11-29 01:14:38,924 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 01:14:38,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 85 events. 4/85 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-29 01:14:38,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 89 transitions, 206 flow [2023-11-29 01:14:38,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 84 transitions, 192 flow [2023-11-29 01:14:38,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:14:38,953 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;@22727572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:14:38,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-29 01:14:38,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:14:38,957 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 01:14:38,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:14:38,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:38,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 01:14:38,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:38,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash 8406, now seen corresponding path program 1 times [2023-11-29 01:14:38,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:38,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864667151] [2023-11-29 01:14:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:39,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864667151] [2023-11-29 01:14:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864667151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:39,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:39,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743423307] [2023-11-29 01:14:39,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:39,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:39,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:39,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2023-11-29 01:14:39,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 192 flow. Second operand has 3 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) [2023-11-29 01:14:39,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:39,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2023-11-29 01:14:39,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:41,484 INFO L124 PetriNetUnfolderBase]: 9255/15326 cut-off events. [2023-11-29 01:14:41,484 INFO L125 PetriNetUnfolderBase]: For 637/638 co-relation queries the response was YES. [2023-11-29 01:14:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28466 conditions, 15326 events. 9255/15326 cut-off events. For 637/638 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 116385 event pairs, 9255 based on Foata normal form. 1846/15906 useless extension candidates. Maximal degree in co-relation 26081. Up to 12544 conditions per place. [2023-11-29 01:14:41,658 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 32 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-29 01:14:41,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 76 transitions, 244 flow [2023-11-29 01:14:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-29 01:14:41,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891385767790262 [2023-11-29 01:14:41,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-29 01:14:41,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-29 01:14:41,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:41,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-29 01:14:41,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:41,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:41,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:41,685 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 192 flow. Second operand 3 states and 184 transitions. [2023-11-29 01:14:41,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 76 transitions, 244 flow [2023-11-29 01:14:41,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 228 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 01:14:41,740 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 164 flow [2023-11-29 01:14:41,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2023-11-29 01:14:41,744 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -10 predicate places. [2023-11-29 01:14:41,745 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 164 flow [2023-11-29 01:14:41,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-29 01:14:41,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:41,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 01:14:41,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:14:41,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:41,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash 8407, now seen corresponding path program 1 times [2023-11-29 01:14:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119307196] [2023-11-29 01:14:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:41,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:41,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119307196] [2023-11-29 01:14:41,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119307196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:41,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344900065] [2023-11-29 01:14:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:41,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 89 [2023-11-29 01:14:41,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:41,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:41,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 89 [2023-11-29 01:14:41,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:43,148 INFO L124 PetriNetUnfolderBase]: 6315/11189 cut-off events. [2023-11-29 01:14:43,148 INFO L125 PetriNetUnfolderBase]: For 203/246 co-relation queries the response was YES. [2023-11-29 01:14:43,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20084 conditions, 11189 events. 6315/11189 cut-off events. For 203/246 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 87228 event pairs, 6315 based on Foata normal form. 901/11372 useless extension candidates. Maximal degree in co-relation 20074. Up to 8703 conditions per place. [2023-11-29 01:14:43,238 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 30 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-29 01:14:43,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 224 flow [2023-11-29 01:14:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-29 01:14:43,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891385767790262 [2023-11-29 01:14:43,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-29 01:14:43,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-29 01:14:43,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:43,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-29 01:14:43,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:43,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:43,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:43,248 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 164 flow. Second operand 3 states and 184 transitions. [2023-11-29 01:14:43,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 224 flow [2023-11-29 01:14:43,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 74 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:43,251 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 160 flow [2023-11-29 01:14:43,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2023-11-29 01:14:43,253 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -12 predicate places. [2023-11-29 01:14:43,253 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 160 flow [2023-11-29 01:14:43,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:43,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:43,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:14:43,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:14:43,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:43,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:43,255 INFO L85 PathProgramCache]: Analyzing trace with hash 250706168, now seen corresponding path program 1 times [2023-11-29 01:14:43,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:43,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620102213] [2023-11-29 01:14:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:43,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620102213] [2023-11-29 01:14:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620102213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540003347] [2023-11-29 01:14:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:43,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:43,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2023-11-29 01:14:43,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:43,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:43,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2023-11-29 01:14:43,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:44,509 INFO L124 PetriNetUnfolderBase]: 6763/11918 cut-off events. [2023-11-29 01:14:44,510 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-29 01:14:44,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21446 conditions, 11918 events. 6763/11918 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 93458 event pairs, 6763 based on Foata normal form. 0/11217 useless extension candidates. Maximal degree in co-relation 21436. Up to 9336 conditions per place. [2023-11-29 01:14:44,577 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 32 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-29 01:14:44,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 224 flow [2023-11-29 01:14:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-11-29 01:14:44,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6741573033707865 [2023-11-29 01:14:44,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-11-29 01:14:44,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-11-29 01:14:44,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:44,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-11-29 01:14:44,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,584 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 160 flow. Second operand 3 states and 180 transitions. [2023-11-29 01:14:44,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 224 flow [2023-11-29 01:14:44,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:44,587 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 156 flow [2023-11-29 01:14:44,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-11-29 01:14:44,588 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2023-11-29 01:14:44,589 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 156 flow [2023-11-29 01:14:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:44,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:14:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:14:44,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash 250706169, now seen corresponding path program 1 times [2023-11-29 01:14:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480524716] [2023-11-29 01:14:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:44,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:44,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480524716] [2023-11-29 01:14:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480524716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:44,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:44,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818656305] [2023-11-29 01:14:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:44,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:44,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 89 [2023-11-29 01:14:44,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:44,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 89 [2023-11-29 01:14:44,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:45,579 INFO L124 PetriNetUnfolderBase]: 6315/11125 cut-off events. [2023-11-29 01:14:45,580 INFO L125 PetriNetUnfolderBase]: For 203/246 co-relation queries the response was YES. [2023-11-29 01:14:45,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20020 conditions, 11125 events. 6315/11125 cut-off events. For 203/246 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 86072 event pairs, 6315 based on Foata normal form. 154/10625 useless extension candidates. Maximal degree in co-relation 20010. Up to 8703 conditions per place. [2023-11-29 01:14:45,648 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 30 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-29 01:14:45,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 216 flow [2023-11-29 01:14:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-29 01:14:45,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891385767790262 [2023-11-29 01:14:45,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-29 01:14:45,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-29 01:14:45,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:45,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-29 01:14:45,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:45,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:45,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:45,654 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 156 flow. Second operand 3 states and 184 transitions. [2023-11-29 01:14:45,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 216 flow [2023-11-29 01:14:45,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:45,657 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 152 flow [2023-11-29 01:14:45,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-29 01:14:45,659 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -16 predicate places. [2023-11-29 01:14:45,659 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 152 flow [2023-11-29 01:14:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:45,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:45,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:14:45,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:45,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -160390278, now seen corresponding path program 1 times [2023-11-29 01:14:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:45,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068435427] [2023-11-29 01:14:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:45,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068435427] [2023-11-29 01:14:45,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068435427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:45,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:45,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:45,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770237899] [2023-11-29 01:14:45,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:45,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:45,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2023-11-29 01:14:45,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:45,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:45,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2023-11-29 01:14:45,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:46,714 INFO L124 PetriNetUnfolderBase]: 6413/11166 cut-off events. [2023-11-29 01:14:46,714 INFO L125 PetriNetUnfolderBase]: For 197/240 co-relation queries the response was YES. [2023-11-29 01:14:46,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20219 conditions, 11166 events. 6413/11166 cut-off events. For 197/240 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 86627 event pairs, 6413 based on Foata normal form. 0/10681 useless extension candidates. Maximal degree in co-relation 20209. Up to 8861 conditions per place. [2023-11-29 01:14:46,758 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 32 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-29 01:14:46,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 216 flow [2023-11-29 01:14:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-11-29 01:14:46,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6741573033707865 [2023-11-29 01:14:46,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-11-29 01:14:46,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-11-29 01:14:46,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:46,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-11-29 01:14:46,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:46,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:46,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:46,762 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 152 flow. Second operand 3 states and 180 transitions. [2023-11-29 01:14:46,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 216 flow [2023-11-29 01:14:46,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:46,764 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 148 flow [2023-11-29 01:14:46,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2023-11-29 01:14:46,765 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -18 predicate places. [2023-11-29 01:14:46,765 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 148 flow [2023-11-29 01:14:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:46,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:46,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:46,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:14:46,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:46,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -160390277, now seen corresponding path program 1 times [2023-11-29 01:14:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:46,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092402429] [2023-11-29 01:14:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:46,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:46,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092402429] [2023-11-29 01:14:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092402429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:46,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434001766] [2023-11-29 01:14:46,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:46,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:46,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 89 [2023-11-29 01:14:46,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:46,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:46,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 89 [2023-11-29 01:14:46,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:47,665 INFO L124 PetriNetUnfolderBase]: 6315/11053 cut-off events. [2023-11-29 01:14:47,665 INFO L125 PetriNetUnfolderBase]: For 203/246 co-relation queries the response was YES. [2023-11-29 01:14:47,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19948 conditions, 11053 events. 6315/11053 cut-off events. For 203/246 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 85412 event pairs, 6315 based on Foata normal form. 60/10531 useless extension candidates. Maximal degree in co-relation 19938. Up to 8703 conditions per place. [2023-11-29 01:14:47,707 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 30 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-29 01:14:47,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 208 flow [2023-11-29 01:14:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-29 01:14:47,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891385767790262 [2023-11-29 01:14:47,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-29 01:14:47,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-29 01:14:47,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:47,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-29 01:14:47,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:47,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:47,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:47,713 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 148 flow. Second operand 3 states and 184 transitions. [2023-11-29 01:14:47,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 208 flow [2023-11-29 01:14:47,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:47,716 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 144 flow [2023-11-29 01:14:47,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-11-29 01:14:47,717 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -20 predicate places. [2023-11-29 01:14:47,717 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 144 flow [2023-11-29 01:14:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:47,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:47,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:47,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:14:47,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:47,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2112113668, now seen corresponding path program 1 times [2023-11-29 01:14:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:47,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845372736] [2023-11-29 01:14:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845372736] [2023-11-29 01:14:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845372736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:47,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:47,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975118962] [2023-11-29 01:14:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:47,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:47,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2023-11-29 01:14:47,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:47,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:47,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2023-11-29 01:14:47,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:48,570 INFO L124 PetriNetUnfolderBase]: 6685/11467 cut-off events. [2023-11-29 01:14:48,570 INFO L125 PetriNetUnfolderBase]: For 202/245 co-relation queries the response was YES. [2023-11-29 01:14:48,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20888 conditions, 11467 events. 6685/11467 cut-off events. For 202/245 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 86688 event pairs, 6685 based on Foata normal form. 0/10952 useless extension candidates. Maximal degree in co-relation 20878. Up to 9229 conditions per place. [2023-11-29 01:14:48,623 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 32 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-29 01:14:48,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 208 flow [2023-11-29 01:14:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-11-29 01:14:48,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6741573033707865 [2023-11-29 01:14:48,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-11-29 01:14:48,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-11-29 01:14:48,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:48,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-11-29 01:14:48,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:48,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:48,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:48,628 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 144 flow. Second operand 3 states and 180 transitions. [2023-11-29 01:14:48,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 208 flow [2023-11-29 01:14:48,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:48,631 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 140 flow [2023-11-29 01:14:48,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2023-11-29 01:14:48,632 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -22 predicate places. [2023-11-29 01:14:48,632 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 140 flow [2023-11-29 01:14:48,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:48,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:48,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:48,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:14:48,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:48,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2112113669, now seen corresponding path program 1 times [2023-11-29 01:14:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:48,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597189394] [2023-11-29 01:14:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597189394] [2023-11-29 01:14:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597189394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:48,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:48,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409263457] [2023-11-29 01:14:48,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:48,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:48,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:48,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:48,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 89 [2023-11-29 01:14:48,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:48,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:48,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 89 [2023-11-29 01:14:48,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:49,480 INFO L124 PetriNetUnfolderBase]: 6315/10941 cut-off events. [2023-11-29 01:14:49,480 INFO L125 PetriNetUnfolderBase]: For 203/246 co-relation queries the response was YES. [2023-11-29 01:14:49,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19836 conditions, 10941 events. 6315/10941 cut-off events. For 203/246 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 83634 event pairs, 6315 based on Foata normal form. 156/10627 useless extension candidates. Maximal degree in co-relation 19826. Up to 8703 conditions per place. [2023-11-29 01:14:49,518 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 30 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-29 01:14:49,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 200 flow [2023-11-29 01:14:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-29 01:14:49,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891385767790262 [2023-11-29 01:14:49,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-29 01:14:49,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-29 01:14:49,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:49,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-29 01:14:49,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:49,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:49,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:49,523 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 140 flow. Second operand 3 states and 184 transitions. [2023-11-29 01:14:49,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 200 flow [2023-11-29 01:14:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:49,525 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 136 flow [2023-11-29 01:14:49,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-29 01:14:49,526 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -24 predicate places. [2023-11-29 01:14:49,526 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 136 flow [2023-11-29 01:14:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:14:49,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:49,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -480324237, now seen corresponding path program 1 times [2023-11-29 01:14:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984411862] [2023-11-29 01:14:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:49,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:49,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984411862] [2023-11-29 01:14:49,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984411862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:49,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:49,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:14:49,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691690630] [2023-11-29 01:14:49,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:49,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:14:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:49,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:14:49,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:14:49,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2023-11-29 01:14:49,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:49,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2023-11-29 01:14:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:52,648 INFO L124 PetriNetUnfolderBase]: 28659/43791 cut-off events. [2023-11-29 01:14:52,649 INFO L125 PetriNetUnfolderBase]: For 904/904 co-relation queries the response was YES. [2023-11-29 01:14:52,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83614 conditions, 43791 events. 28659/43791 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 1968. Compared 336253 event pairs, 3612 based on Foata normal form. 0/42788 useless extension candidates. Maximal degree in co-relation 83592. Up to 12152 conditions per place. [2023-11-29 01:14:52,867 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 195 selfloop transitions, 29 changer transitions 0/248 dead transitions. [2023-11-29 01:14:52,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 248 transitions, 992 flow [2023-11-29 01:14:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:14:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 01:14:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2023-11-29 01:14:52,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7487231869254342 [2023-11-29 01:14:52,871 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 733 transitions. [2023-11-29 01:14:52,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 733 transitions. [2023-11-29 01:14:52,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:52,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 733 transitions. [2023-11-29 01:14:52,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 66.63636363636364) internal successors, (733), 11 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:52,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 89.0) internal successors, (1068), 12 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:52,878 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 89.0) internal successors, (1068), 12 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:52,878 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 136 flow. Second operand 11 states and 733 transitions. [2023-11-29 01:14:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 248 transitions, 992 flow [2023-11-29 01:14:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 248 transitions, 982 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:14:52,884 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 334 flow [2023-11-29 01:14:52,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-11-29 01:14:52,885 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -8 predicate places. [2023-11-29 01:14:52,885 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 334 flow [2023-11-29 01:14:52,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:52,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:52,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:52,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:14:52,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:52,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1678921171, now seen corresponding path program 1 times [2023-11-29 01:14:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:52,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215303739] [2023-11-29 01:14:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:52,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:52,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:52,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215303739] [2023-11-29 01:14:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215303739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:52,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:52,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:52,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962412976] [2023-11-29 01:14:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:52,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:52,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:52,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 89 [2023-11-29 01:14:52,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:52,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:52,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 89 [2023-11-29 01:14:52,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:53,251 INFO L124 PetriNetUnfolderBase]: 1135/2765 cut-off events. [2023-11-29 01:14:53,251 INFO L125 PetriNetUnfolderBase]: For 1476/1779 co-relation queries the response was YES. [2023-11-29 01:14:53,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6239 conditions, 2765 events. 1135/2765 cut-off events. For 1476/1779 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22128 event pairs, 175 based on Foata normal form. 1288/3997 useless extension candidates. Maximal degree in co-relation 4860. Up to 1524 conditions per place. [2023-11-29 01:14:53,264 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 48 selfloop transitions, 2 changer transitions 2/88 dead transitions. [2023-11-29 01:14:53,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 88 transitions, 429 flow [2023-11-29 01:14:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2023-11-29 01:14:53,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7490636704119851 [2023-11-29 01:14:53,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2023-11-29 01:14:53,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2023-11-29 01:14:53,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:53,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2023-11-29 01:14:53,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,269 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 334 flow. Second operand 3 states and 200 transitions. [2023-11-29 01:14:53,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 88 transitions, 429 flow [2023-11-29 01:14:53,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:14:53,284 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 304 flow [2023-11-29 01:14:53,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-11-29 01:14:53,285 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -21 predicate places. [2023-11-29 01:14:53,285 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 304 flow [2023-11-29 01:14:53,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:53,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:53,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:14:53,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:53,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash 234579795, now seen corresponding path program 2 times [2023-11-29 01:14:53,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:53,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912809186] [2023-11-29 01:14:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:53,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:53,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912809186] [2023-11-29 01:14:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912809186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:53,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:53,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40335375] [2023-11-29 01:14:53,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:53,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:53,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:53,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:53,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 89 [2023-11-29 01:14:53,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 89 [2023-11-29 01:14:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:53,444 INFO L124 PetriNetUnfolderBase]: 131/421 cut-off events. [2023-11-29 01:14:53,444 INFO L125 PetriNetUnfolderBase]: For 379/388 co-relation queries the response was YES. [2023-11-29 01:14:53,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 421 events. 131/421 cut-off events. For 379/388 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2165 event pairs, 11 based on Foata normal form. 94/510 useless extension candidates. Maximal degree in co-relation 857. Up to 210 conditions per place. [2023-11-29 01:14:53,446 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 22 selfloop transitions, 2 changer transitions 6/62 dead transitions. [2023-11-29 01:14:53,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 273 flow [2023-11-29 01:14:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:14:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2023-11-29 01:14:53,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7116104868913857 [2023-11-29 01:14:53,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2023-11-29 01:14:53,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2023-11-29 01:14:53,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:53,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2023-11-29 01:14:53,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,451 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 304 flow. Second operand 3 states and 190 transitions. [2023-11-29 01:14:53,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 273 flow [2023-11-29 01:14:53,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 262 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 01:14:53,455 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 175 flow [2023-11-29 01:14:53,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2023-11-29 01:14:53,456 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -26 predicate places. [2023-11-29 01:14:53,457 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 175 flow [2023-11-29 01:14:53,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:53,457 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] [2023-11-29 01:14:53,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:14:53,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:53,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1814188649, now seen corresponding path program 1 times [2023-11-29 01:14:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:53,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648126614] [2023-11-29 01:14:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:53,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:53,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648126614] [2023-11-29 01:14:53,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648126614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:53,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:14:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040479824] [2023-11-29 01:14:53,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:53,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:14:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:14:53,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:14:53,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2023-11-29 01:14:53,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:53,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2023-11-29 01:14:53,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:53,761 INFO L124 PetriNetUnfolderBase]: 115/342 cut-off events. [2023-11-29 01:14:53,761 INFO L125 PetriNetUnfolderBase]: For 159/167 co-relation queries the response was YES. [2023-11-29 01:14:53,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 342 events. 115/342 cut-off events. For 159/167 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1552 event pairs, 22 based on Foata normal form. 8/346 useless extension candidates. Maximal degree in co-relation 830. Up to 60 conditions per place. [2023-11-29 01:14:53,762 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 40 selfloop transitions, 9 changer transitions 11/81 dead transitions. [2023-11-29 01:14:53,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 397 flow [2023-11-29 01:14:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:14:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:14:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 515 transitions. [2023-11-29 01:14:53,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5786516853932584 [2023-11-29 01:14:53,765 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 515 transitions. [2023-11-29 01:14:53,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 515 transitions. [2023-11-29 01:14:53,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:53,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 515 transitions. [2023-11-29 01:14:53,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 51.5) internal successors, (515), 10 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,772 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,772 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 175 flow. Second operand 10 states and 515 transitions. [2023-11-29 01:14:53,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 397 flow [2023-11-29 01:14:53,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 381 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-29 01:14:53,776 INFO L231 Difference]: Finished difference. Result has 76 places, 51 transitions, 209 flow [2023-11-29 01:14:53,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=209, PETRI_PLACES=76, PETRI_TRANSITIONS=51} [2023-11-29 01:14:53,777 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -17 predicate places. [2023-11-29 01:14:53,777 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 51 transitions, 209 flow [2023-11-29 01:14:53,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:53,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:53,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:14:53,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:53,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 596240400, now seen corresponding path program 1 times [2023-11-29 01:14:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:53,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103051860] [2023-11-29 01:14:53,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:53,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:53,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:53,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103051860] [2023-11-29 01:14:53,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103051860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:53,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:53,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:14:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735244055] [2023-11-29 01:14:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:53,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:14:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:14:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:14:53,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2023-11-29 01:14:53,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 51 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:53,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2023-11-29 01:14:53,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:54,053 INFO L124 PetriNetUnfolderBase]: 115/300 cut-off events. [2023-11-29 01:14:54,053 INFO L125 PetriNetUnfolderBase]: For 183/187 co-relation queries the response was YES. [2023-11-29 01:14:54,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 300 events. 115/300 cut-off events. For 183/187 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1248 event pairs, 26 based on Foata normal form. 6/300 useless extension candidates. Maximal degree in co-relation 825. Up to 64 conditions per place. [2023-11-29 01:14:54,055 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 25 selfloop transitions, 4 changer transitions 27/74 dead transitions. [2023-11-29 01:14:54,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 390 flow [2023-11-29 01:14:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:14:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:14:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 467 transitions. [2023-11-29 01:14:54,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830212234706617 [2023-11-29 01:14:54,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 467 transitions. [2023-11-29 01:14:54,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 467 transitions. [2023-11-29 01:14:54,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:54,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 467 transitions. [2023-11-29 01:14:54,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.888888888888886) internal successors, (467), 9 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,061 INFO L175 Difference]: Start difference. First operand has 76 places, 51 transitions, 209 flow. Second operand 9 states and 467 transitions. [2023-11-29 01:14:54,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 390 flow [2023-11-29 01:14:54,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 378 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 01:14:54,065 INFO L231 Difference]: Finished difference. Result has 72 places, 41 transitions, 158 flow [2023-11-29 01:14:54,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=64, 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=9, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=41} [2023-11-29 01:14:54,066 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -21 predicate places. [2023-11-29 01:14:54,066 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 41 transitions, 158 flow [2023-11-29 01:14:54,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:54,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:54,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:14:54,067 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-29 01:14:54,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:54,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1524664380, now seen corresponding path program 1 times [2023-11-29 01:14:54,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:54,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093079764] [2023-11-29 01:14:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:54,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:54,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:54,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093079764] [2023-11-29 01:14:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093079764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:54,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:54,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:14:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181380069] [2023-11-29 01:14:54,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:14:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:14:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:14:54,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2023-11-29 01:14:54,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 41 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:54,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2023-11-29 01:14:54,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:14:54,314 INFO L124 PetriNetUnfolderBase]: 78/196 cut-off events. [2023-11-29 01:14:54,315 INFO L125 PetriNetUnfolderBase]: For 128/132 co-relation queries the response was YES. [2023-11-29 01:14:54,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 196 events. 78/196 cut-off events. For 128/132 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 619 event pairs, 22 based on Foata normal form. 6/201 useless extension candidates. Maximal degree in co-relation 514. Up to 57 conditions per place. [2023-11-29 01:14:54,316 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-11-29 01:14:54,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 305 flow [2023-11-29 01:14:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:14:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:14:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 459 transitions. [2023-11-29 01:14:54,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730337078651685 [2023-11-29 01:14:54,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 459 transitions. [2023-11-29 01:14:54,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 459 transitions. [2023-11-29 01:14:54,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:14:54,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 459 transitions. [2023-11-29 01:14:54,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,323 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,323 INFO L175 Difference]: Start difference. First operand has 72 places, 41 transitions, 158 flow. Second operand 9 states and 459 transitions. [2023-11-29 01:14:54,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 305 flow [2023-11-29 01:14:54,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 273 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-29 01:14:54,325 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-29 01:14:54,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-29 01:14:54,326 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -32 predicate places. [2023-11-29 01:14:54,326 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-29 01:14:54,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:54,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2023-11-29 01:14:54,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2023-11-29 01:14:54,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2023-11-29 01:14:54,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2023-11-29 01:14:54,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2023-11-29 01:14:54,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2023-11-29 01:14:54,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2023-11-29 01:14:54,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2023-11-29 01:14:54,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2023-11-29 01:14:54,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2023-11-29 01:14:54,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2023-11-29 01:14:54,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2023-11-29 01:14:54,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2023-11-29 01:14:54,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2023-11-29 01:14:54,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2023-11-29 01:14:54,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2023-11-29 01:14:54,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2023-11-29 01:14:54,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2023-11-29 01:14:54,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 24 remaining) [2023-11-29 01:14:54,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2023-11-29 01:14:54,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2023-11-29 01:14:54,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2023-11-29 01:14:54,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2023-11-29 01:14:54,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2023-11-29 01:14:54,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:14:54,333 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:54,338 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:14:54,338 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:14:54,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:14:54 BasicIcfg [2023-11-29 01:14:54,344 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:14:54,345 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:14:54,345 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:14:54,345 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:14:54,346 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:38" (3/4) ... [2023-11-29 01:14:54,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:14:54,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-11-29 01:14:54,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-11-29 01:14:54,356 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 62 nodes and edges [2023-11-29 01:14:54,357 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 01:14:54,357 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 01:14:54,357 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 01:14:54,436 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:14:54,437 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:14:54,437 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:14:54,438 INFO L158 Benchmark]: Toolchain (without parser) took 16929.69ms. Allocated memory was 132.1MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 92.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-29 01:14:54,439 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:14:54,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.90ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 72.0MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 01:14:54,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.44ms. Allocated memory is still 132.1MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:14:54,440 INFO L158 Benchmark]: Boogie Preprocessor took 55.72ms. Allocated memory is still 132.1MB. Free memory was 69.9MB in the beginning and 67.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:14:54,441 INFO L158 Benchmark]: RCFGBuilder took 645.91ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 67.0MB in the beginning and 115.3MB in the end (delta: -48.3MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-11-29 01:14:54,441 INFO L158 Benchmark]: TraceAbstraction took 15597.97ms. Allocated memory was 159.4MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 115.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-11-29 01:14:54,442 INFO L158 Benchmark]: Witness Printer took 92.77ms. Allocated memory is still 3.0GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:14:54,444 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 481.90ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 72.0MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.44ms. Allocated memory is still 132.1MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.72ms. Allocated memory is still 132.1MB. Free memory was 69.9MB in the beginning and 67.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 645.91ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 67.0MB in the beginning and 115.3MB in the end (delta: -48.3MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * TraceAbstraction took 15597.97ms. Allocated memory was 159.4MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 115.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 92.77ms. Allocated memory is still 3.0GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 714]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.5s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1035 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 724 mSDsluCounter, 160 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1626 IncrementalHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 68 mSDtfsCounter, 1626 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=9, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 01:14:54,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d520f89c-0aff-4ee0-a4e4-4eb0dac91c64/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE