./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU --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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:40,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:41,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:10:41,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:41,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:41,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:41,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:41,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:41,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:41,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:41,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:41,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:41,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:41,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:41,135 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:41,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:41,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:41,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:41,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:41,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:41,138 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:10:41,142 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:10:41,142 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:10:41,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:41,143 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:10:41,143 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:41,144 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:41,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:41,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:41,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:41,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:41,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:41,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:41,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:41,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:41,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:41,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:41,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:41,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:41,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:41,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:41,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:41,153 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_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-10-31 22:10:41,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:41,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:41,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:41,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:41,525 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:41,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i Unable to find full path for "g++" [2024-10-31 22:10:43,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:44,331 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:44,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-31 22:10:44,353 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/data/8e08f3c8a/7b10ea9791d24a3fbb5c15d737bf8f9d/FLAGc57da2d1f [2024-10-31 22:10:44,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/data/8e08f3c8a/7b10ea9791d24a3fbb5c15d737bf8f9d [2024-10-31 22:10:44,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:44,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:44,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:44,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:44,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:44,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:44" (1/1) ... [2024-10-31 22:10:44,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c44f34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:44, skipping insertion in model container [2024-10-31 22:10:44,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:44" (1/1) ... [2024-10-31 22:10:44,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:45,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:45,209 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:45,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:45,337 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:45,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45 WrapperNode [2024-10-31 22:10:45,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:45,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:45,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:45,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:45,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,404 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 350 [2024-10-31 22:10:45,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:45,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:45,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:45,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:45,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,451 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-10-31 22:10:45,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:45,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:45,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:45,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:45,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (1/1) ... [2024-10-31 22:10:45,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:45,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:45,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:45,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:10:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:10:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:10:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:10:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:10:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:10:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:10:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:10:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:10:45,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:10:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:10:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:10:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:10:45,651 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:10:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:10:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:10:45,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:45,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:45,660 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:10:45,833 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:45,836 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:46,524 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:46,524 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:47,258 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:47,259 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-10-31 22:10:47,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:47 BoogieIcfgContainer [2024-10-31 22:10:47,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:47,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:47,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:47,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:47,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:44" (1/3) ... [2024-10-31 22:10:47,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b846063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:47, skipping insertion in model container [2024-10-31 22:10:47,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:45" (2/3) ... [2024-10-31 22:10:47,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b846063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:47, skipping insertion in model container [2024-10-31 22:10:47,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:47" (3/3) ... [2024-10-31 22:10:47,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-10-31 22:10:47,297 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:47,298 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-10-31 22:10:47,298 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:47,393 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:10:47,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 199 transitions, 405 flow [2024-10-31 22:10:47,592 INFO L124 PetriNetUnfolderBase]: 70/329 cut-off events. [2024-10-31 22:10:47,593 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:10:47,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 329 events. 70/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1963 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 192. Up to 8 conditions per place. [2024-10-31 22:10:47,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 199 transitions, 405 flow [2024-10-31 22:10:47,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 199 transitions, 405 flow [2024-10-31 22:10:47,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:47,643 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@7b0c3fed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:47,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-10-31 22:10:47,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:47,649 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-10-31 22:10:47,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:47,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:47,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:10:47,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:47,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash 28070051, now seen corresponding path program 1 times [2024-10-31 22:10:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346980012] [2024-10-31 22:10:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346980012] [2024-10-31 22:10:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346980012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:48,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:48,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:48,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581177814] [2024-10-31 22:10:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:48,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:48,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:48,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2024-10-31 22:10:48,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 199 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:48,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:48,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2024-10-31 22:10:48,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:48,949 INFO L124 PetriNetUnfolderBase]: 1085/3642 cut-off events. [2024-10-31 22:10:48,950 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:10:48,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 3642 events. 1085/3642 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 32638 event pairs, 924 based on Foata normal form. 734/3839 useless extension candidates. Maximal degree in co-relation 5534. Up to 2056 conditions per place. [2024-10-31 22:10:48,978 INFO L140 encePairwiseOnDemand]: 160/199 looper letters, 72 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2024-10-31 22:10:48,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 477 flow [2024-10-31 22:10:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2024-10-31 22:10:48,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6231155778894473 [2024-10-31 22:10:48,998 INFO L175 Difference]: Start difference. First operand has 159 places, 199 transitions, 405 flow. Second operand 3 states and 372 transitions. [2024-10-31 22:10:49,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 477 flow [2024-10-31 22:10:49,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:49,010 INFO L231 Difference]: Finished difference. Result has 159 places, 161 transitions, 339 flow [2024-10-31 22:10:49,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=159, PETRI_TRANSITIONS=161} [2024-10-31 22:10:49,019 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2024-10-31 22:10:49,019 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 161 transitions, 339 flow [2024-10-31 22:10:49,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:49,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:49,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:10:49,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:49,022 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:49,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash 870261621, now seen corresponding path program 1 times [2024-10-31 22:10:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:49,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227976307] [2024-10-31 22:10:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227976307] [2024-10-31 22:10:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227976307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122396651] [2024-10-31 22:10:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:49,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:49,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:49,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:49,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:10:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:49,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:10:49,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:49,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:49,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122396651] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:49,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:49,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-31 22:10:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408679504] [2024-10-31 22:10:49,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:49,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:49,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2024-10-31 22:10:49,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 161 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:49,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:49,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2024-10-31 22:10:49,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:50,162 INFO L124 PetriNetUnfolderBase]: 1085/3645 cut-off events. [2024-10-31 22:10:50,162 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:10:50,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5720 conditions, 3645 events. 1085/3645 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 32606 event pairs, 924 based on Foata normal form. 0/3108 useless extension candidates. Maximal degree in co-relation 5708. Up to 2056 conditions per place. [2024-10-31 22:10:50,186 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 72 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-10-31 22:10:50,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 164 transitions, 505 flow [2024-10-31 22:10:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 602 transitions. [2024-10-31 22:10:50,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5041876046901173 [2024-10-31 22:10:50,196 INFO L175 Difference]: Start difference. First operand has 159 places, 161 transitions, 339 flow. Second operand 6 states and 602 transitions. [2024-10-31 22:10:50,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 164 transitions, 505 flow [2024-10-31 22:10:50,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 164 transitions, 501 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:50,204 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 371 flow [2024-10-31 22:10:50,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2024-10-31 22:10:50,206 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 7 predicate places. [2024-10-31 22:10:50,206 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 371 flow [2024-10-31 22:10:50,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:50,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:50,209 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-10-31 22:10:50,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:10:50,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:50,414 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:50,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:50,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1630762275, now seen corresponding path program 2 times [2024-10-31 22:10:50,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984564028] [2024-10-31 22:10:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-31 22:10:50,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984564028] [2024-10-31 22:10:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984564028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:50,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840686972] [2024-10-31 22:10:50,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:50,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:50,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:50,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 199 [2024-10-31 22:10:50,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:50,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:50,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 199 [2024-10-31 22:10:50,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:51,375 INFO L124 PetriNetUnfolderBase]: 1131/3712 cut-off events. [2024-10-31 22:10:51,375 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:10:51,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 3712 events. 1131/3712 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 33037 event pairs, 924 based on Foata normal form. 0/3215 useless extension candidates. Maximal degree in co-relation 5857. Up to 2052 conditions per place. [2024-10-31 22:10:51,402 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 99 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2024-10-31 22:10:51,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 184 transitions, 613 flow [2024-10-31 22:10:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2024-10-31 22:10:51,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829145728643216 [2024-10-31 22:10:51,405 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 371 flow. Second operand 3 states and 348 transitions. [2024-10-31 22:10:51,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 184 transitions, 613 flow [2024-10-31 22:10:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 184 transitions, 599 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:10:51,413 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 357 flow [2024-10-31 22:10:51,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2024-10-31 22:10:51,416 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2024-10-31 22:10:51,416 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 357 flow [2024-10-31 22:10:51,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:51,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:51,417 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-10-31 22:10:51,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:51,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:51,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1630762276, now seen corresponding path program 1 times [2024-10-31 22:10:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:51,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429259973] [2024-10-31 22:10:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:51,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:51,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429259973] [2024-10-31 22:10:51,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429259973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:51,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547057771] [2024-10-31 22:10:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:51,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:51,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:51,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:51,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:10:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:51,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:10:51,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:51,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547057771] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:51,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-31 22:10:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902972273] [2024-10-31 22:10:51,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:51,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:10:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:10:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:10:51,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2024-10-31 22:10:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 357 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:51,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2024-10-31 22:10:51,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:52,463 INFO L124 PetriNetUnfolderBase]: 1085/3627 cut-off events. [2024-10-31 22:10:52,464 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-10-31 22:10:52,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 3627 events. 1085/3627 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 32277 event pairs, 924 based on Foata normal form. 6/3121 useless extension candidates. Maximal degree in co-relation 5699. Up to 2056 conditions per place. [2024-10-31 22:10:52,484 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 72 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-10-31 22:10:52,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 559 flow [2024-10-31 22:10:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:10:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:10:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1133 transitions. [2024-10-31 22:10:52,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47445561139028475 [2024-10-31 22:10:52,489 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 357 flow. Second operand 12 states and 1133 transitions. [2024-10-31 22:10:52,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 559 flow [2024-10-31 22:10:52,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 555 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:10:52,494 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 437 flow [2024-10-31 22:10:52,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=437, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2024-10-31 22:10:52,495 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 21 predicate places. [2024-10-31 22:10:52,496 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 437 flow [2024-10-31 22:10:52,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:52,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:52,497 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-10-31 22:10:52,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:10:52,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:52,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:52,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash 336622564, now seen corresponding path program 2 times [2024-10-31 22:10:52,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865347275] [2024-10-31 22:10:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-31 22:10:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865347275] [2024-10-31 22:10:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865347275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:52,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:52,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716739877] [2024-10-31 22:10:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:52,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:52,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:53,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 199 [2024-10-31 22:10:53,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 168 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:53,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:53,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 199 [2024-10-31 22:10:53,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:53,704 INFO L124 PetriNetUnfolderBase]: 1059/3350 cut-off events. [2024-10-31 22:10:53,705 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-31 22:10:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5458 conditions, 3350 events. 1059/3350 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 29635 event pairs, 0 based on Foata normal form. 1/2916 useless extension candidates. Maximal degree in co-relation 5382. Up to 2019 conditions per place. [2024-10-31 22:10:53,741 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 105 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-10-31 22:10:53,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 191 transitions, 697 flow [2024-10-31 22:10:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:10:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-10-31 22:10:53,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5979899497487438 [2024-10-31 22:10:53,744 INFO L175 Difference]: Start difference. First operand has 180 places, 168 transitions, 437 flow. Second operand 3 states and 357 transitions. [2024-10-31 22:10:53,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 191 transitions, 697 flow [2024-10-31 22:10:53,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 191 transitions, 649 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:53,754 INFO L231 Difference]: Finished difference. Result has 178 places, 168 transitions, 399 flow [2024-10-31 22:10:53,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=178, PETRI_TRANSITIONS=168} [2024-10-31 22:10:53,756 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, 19 predicate places. [2024-10-31 22:10:53,756 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 168 transitions, 399 flow [2024-10-31 22:10:53,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:53,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:53,758 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:53,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:53,759 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:53,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash -284018499, now seen corresponding path program 1 times [2024-10-31 22:10:53,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:53,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494884112] [2024-10-31 22:10:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-31 22:10:54,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:54,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494884112] [2024-10-31 22:10:54,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494884112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:54,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101218886] [2024-10-31 22:10:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:54,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:54,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:54,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:54,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:10:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:54,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:10:54,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:54,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-31 22:10:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-31 22:10:54,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:10:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-31 22:10:54,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101218886] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:10:54,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:10:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-31 22:10:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955441791] [2024-10-31 22:10:54,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:10:54,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:54,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 199 [2024-10-31 22:10:54,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 168 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:54,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:54,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 199 [2024-10-31 22:10:54,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:54,762 INFO L124 PetriNetUnfolderBase]: 72/276 cut-off events. [2024-10-31 22:10:54,762 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-10-31 22:10:54,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 276 events. 72/276 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1126 event pairs, 34 based on Foata normal form. 44/292 useless extension candidates. Maximal degree in co-relation 479. Up to 132 conditions per place. [2024-10-31 22:10:54,765 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 61 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-10-31 22:10:54,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 362 flow [2024-10-31 22:10:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:10:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2024-10-31 22:10:54,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962311557788945 [2024-10-31 22:10:54,767 INFO L175 Difference]: Start difference. First operand has 178 places, 168 transitions, 399 flow. Second operand 4 states and 395 transitions. [2024-10-31 22:10:54,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 362 flow [2024-10-31 22:10:54,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:54,770 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 186 flow [2024-10-31 22:10:54,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=4, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-10-31 22:10:54,771 INFO L277 CegarLoopForPetriNet]: 159 programPoint places, -79 predicate places. [2024-10-31 22:10:54,772 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 186 flow [2024-10-31 22:10:54,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:54,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:54,773 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:10:54,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:10:54,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:10:54,974 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-10-31 22:10:54,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash -214637841, now seen corresponding path program 1 times [2024-10-31 22:10:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:54,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208302384] [2024-10-31 22:10:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:54,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:55,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:55,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:55,082 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:55,083 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-10-31 22:10:55,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-10-31 22:10:55,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-10-31 22:10:55,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-10-31 22:10:55,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-10-31 22:10:55,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2024-10-31 22:10:55,087 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-10-31 22:10:55,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (42 of 50 remaining) [2024-10-31 22:10:55,088 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-10-31 22:10:55,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-10-31 22:10:55,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-10-31 22:10:55,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-10-31 22:10:55,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-10-31 22:10:55,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-10-31 22:10:55,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-10-31 22:10:55,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-10-31 22:10:55,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-10-31 22:10:55,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-10-31 22:10:55,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-10-31 22:10:55,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-10-31 22:10:55,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-10-31 22:10:55,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-10-31 22:10:55,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-10-31 22:10:55,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-10-31 22:10:55,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (25 of 50 remaining) [2024-10-31 22:10:55,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-10-31 22:10:55,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-10-31 22:10:55,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-10-31 22:10:55,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-10-31 22:10:55,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-10-31 22:10:55,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-10-31 22:10:55,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-10-31 22:10:55,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-10-31 22:10:55,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-10-31 22:10:55,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-10-31 22:10:55,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-10-31 22:10:55,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-10-31 22:10:55,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-10-31 22:10:55,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-10-31 22:10:55,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-10-31 22:10:55,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-10-31 22:10:55,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-10-31 22:10:55,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-10-31 22:10:55,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-10-31 22:10:55,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-10-31 22:10:55,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-10-31 22:10:55,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-10-31 22:10:55,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-10-31 22:10:55,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-10-31 22:10:55,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-10-31 22:10:55,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:10:55,102 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-31 22:10:55,105 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:55,105 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:10:55,154 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:10:55,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 262 transitions, 540 flow [2024-10-31 22:10:55,218 INFO L124 PetriNetUnfolderBase]: 113/534 cut-off events. [2024-10-31 22:10:55,218 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:10:55,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 534 events. 113/534 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3477 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 331. Up to 12 conditions per place. [2024-10-31 22:10:55,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 262 transitions, 540 flow [2024-10-31 22:10:55,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 262 transitions, 540 flow [2024-10-31 22:10:55,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:55,234 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@7b0c3fed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:55,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-31 22:10:55,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:55,238 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-10-31 22:10:55,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:55,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:55,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:10:55,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:10:55,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash 36135459, now seen corresponding path program 1 times [2024-10-31 22:10:55,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:55,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311852920] [2024-10-31 22:10:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:55,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311852920] [2024-10-31 22:10:55,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311852920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:55,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121914994] [2024-10-31 22:10:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:55,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:55,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:55,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 262 [2024-10-31 22:10:55,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 262 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:55,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:55,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 262 [2024-10-31 22:10:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:06,317 INFO L124 PetriNetUnfolderBase]: 47750/105628 cut-off events. [2024-10-31 22:11:06,317 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-10-31 22:11:06,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174866 conditions, 105628 events. 47750/105628 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 2991. Compared 1280559 event pairs, 42147 based on Foata normal form. 24746/116376 useless extension candidates. Maximal degree in co-relation 168894. Up to 69120 conditions per place. [2024-10-31 22:11:07,151 INFO L140 encePairwiseOnDemand]: 211/262 looper letters, 96 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2024-10-31 22:11:07,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 211 transitions, 634 flow [2024-10-31 22:11:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2024-10-31 22:11:07,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6183206106870229 [2024-10-31 22:11:07,154 INFO L175 Difference]: Start difference. First operand has 209 places, 262 transitions, 540 flow. Second operand 3 states and 486 transitions. [2024-10-31 22:11:07,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 211 transitions, 634 flow [2024-10-31 22:11:07,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 211 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:11:07,164 INFO L231 Difference]: Finished difference. Result has 208 places, 211 transitions, 448 flow [2024-10-31 22:11:07,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=208, PETRI_TRANSITIONS=211} [2024-10-31 22:11:07,165 INFO L277 CegarLoopForPetriNet]: 209 programPoint places, -1 predicate places. [2024-10-31 22:11:07,166 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 211 transitions, 448 flow [2024-10-31 22:11:07,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:07,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:07,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:11:07,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:11:07,168 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-10-31 22:11:07,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1120289531, now seen corresponding path program 1 times [2024-10-31 22:11:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:07,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563104342] [2024-10-31 22:11:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:07,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:07,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563104342] [2024-10-31 22:11:07,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563104342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:07,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299309397] [2024-10-31 22:11:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:07,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:07,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:07,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990c017d-54b9-41b1-8442-90372bad1025/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:11:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:07,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:11:07,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:07,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299309397] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:07,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-31 22:11:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817712845] [2024-10-31 22:11:07,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:07,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:11:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:11:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:11:07,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 262 [2024-10-31 22:11:07,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 211 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:07,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:07,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 262 [2024-10-31 22:11:07,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand