./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu --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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:53,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:53,506 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:39:53,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:53,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:53,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:53,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:53,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:53,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:53,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:53,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:53,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:53,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:53,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:53,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:53,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:53,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:53,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:53,550 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:53,550 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:53,551 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:53,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:53,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:53,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:53,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:53,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:53,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:53,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:53,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:53,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:53,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:53,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:53,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:53,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:53,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:53,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:53,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:53,559 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:53,560 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_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2023-11-19 07:39:53,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:53,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:53,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:53,961 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:53,962 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:53,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2023-11-19 07:39:57,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:57,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:57,733 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2023-11-19 07:39:57,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/data/c8833e2f1/39f325c0d7004c97a4fbebb906a544c7/FLAG8ab4c2dfd [2023-11-19 07:39:57,765 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/data/c8833e2f1/39f325c0d7004c97a4fbebb906a544c7 [2023-11-19 07:39:57,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:57,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:57,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:57,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:57,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:57,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:57" (1/1) ... [2023-11-19 07:39:57,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5fde76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:57, skipping insertion in model container [2023-11-19 07:39:57,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:57" (1/1) ... [2023-11-19 07:39:57,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:58,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:58,264 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:58,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:58,354 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:58,354 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:58,362 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:58,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58 WrapperNode [2023-11-19 07:39:58,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:58,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:58,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:58,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:58,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,436 INFO L138 Inliner]: procedures = 178, calls = 41, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 155 [2023-11-19 07:39:58,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:58,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:58,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:58,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:58,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:58,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:58,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:58,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:58,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (1/1) ... [2023-11-19 07:39:58,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:58,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:58,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:58,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8920dfb-fcb1-4992-8460-55520093ffaa/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:39:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:39:58,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:39:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:58,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:58,613 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:39:58,815 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:58,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:59,108 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:59,400 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:59,400 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:39:59,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:59 BoogieIcfgContainer [2023-11-19 07:39:59,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:59,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:59,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:59,425 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:59,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:57" (1/3) ... [2023-11-19 07:39:59,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a7df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:59, skipping insertion in model container [2023-11-19 07:39:59,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:58" (2/3) ... [2023-11-19 07:39:59,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a7df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:59, skipping insertion in model container [2023-11-19 07:39:59,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:59" (3/3) ... [2023-11-19 07:39:59,429 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2023-11-19 07:39:59,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:59,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-19 07:39:59,453 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:59,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:59,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 322 flow [2023-11-19 07:39:59,750 INFO L124 PetriNetUnfolderBase]: 18/175 cut-off events. [2023-11-19 07:39:59,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:59,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 175 events. 18/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 396 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 142. Up to 4 conditions per place. [2023-11-19 07:39:59,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 322 flow [2023-11-19 07:39:59,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 322 flow [2023-11-19 07:39:59,768 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:59,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 322 flow [2023-11-19 07:39:59,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 322 flow [2023-11-19 07:39:59,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 322 flow [2023-11-19 07:39:59,881 INFO L124 PetriNetUnfolderBase]: 18/175 cut-off events. [2023-11-19 07:39:59,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 175 events. 18/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 396 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 142. Up to 4 conditions per place. [2023-11-19 07:39:59,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 4712 [2023-11-19 07:40:07,468 INFO L134 LiptonReduction]: Checked pairs total: 7417 [2023-11-19 07:40:07,468 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-11-19 07:40:07,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:07,508 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53e8fcb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:07,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-19 07:40:07,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:07,513 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:40:07,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:07,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:07,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:07,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-19 07:40:07,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash 27113, now seen corresponding path program 1 times [2023-11-19 07:40:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749830225] [2023-11-19 07:40:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:07,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:07,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749830225] [2023-11-19 07:40:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749830225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:07,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:07,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563720066] [2023-11-19 07:40:07,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:07,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:08,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 346 [2023-11-19 07:40:08,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:08,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 346 [2023-11-19 07:40:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:08,126 INFO L124 PetriNetUnfolderBase]: 82/187 cut-off events. [2023-11-19 07:40:08,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 187 events. 82/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 823 event pairs, 66 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 350. Up to 177 conditions per place. [2023-11-19 07:40:08,130 INFO L140 encePairwiseOnDemand]: 338/346 looper letters, 30 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-19 07:40:08,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 132 flow [2023-11-19 07:40:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-19 07:40:08,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37764932562620424 [2023-11-19 07:40:08,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-19 07:40:08,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-19 07:40:08,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:08,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-19 07:40:08,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,165 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 90 flow. Second operand 3 states and 392 transitions. [2023-11-19 07:40:08,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 132 flow [2023-11-19 07:40:08,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:08,170 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 72 flow [2023-11-19 07:40:08,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-11-19 07:40:08,175 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-11-19 07:40:08,176 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 72 flow [2023-11-19 07:40:08,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:08,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:08,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-19 07:40:08,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash 27112, now seen corresponding path program 1 times [2023-11-19 07:40:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:08,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122705966] [2023-11-19 07:40:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:08,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:08,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122705966] [2023-11-19 07:40:08,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122705966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:08,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:08,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761130660] [2023-11-19 07:40:08,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:08,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:08,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 346 [2023-11-19 07:40:08,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:08,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 346 [2023-11-19 07:40:08,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:08,333 INFO L124 PetriNetUnfolderBase]: 57/147 cut-off events. [2023-11-19 07:40:08,333 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 147 events. 57/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 589 event pairs, 42 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 283. Up to 119 conditions per place. [2023-11-19 07:40:08,335 INFO L140 encePairwiseOnDemand]: 342/346 looper letters, 32 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-11-19 07:40:08,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 150 flow [2023-11-19 07:40:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-11-19 07:40:08,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3670520231213873 [2023-11-19 07:40:08,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-11-19 07:40:08,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-11-19 07:40:08,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:08,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-11-19 07:40:08,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,346 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 72 flow. Second operand 3 states and 381 transitions. [2023-11-19 07:40:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 150 flow [2023-11-19 07:40:08,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:08,348 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 89 flow [2023-11-19 07:40:08,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-11-19 07:40:08,350 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-11-19 07:40:08,350 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 89 flow [2023-11-19 07:40:08,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:08,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:40:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:08,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-19 07:40:08,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash 26074566, now seen corresponding path program 1 times [2023-11-19 07:40:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725972329] [2023-11-19 07:40:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:08,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725972329] [2023-11-19 07:40:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725972329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:08,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:08,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401408051] [2023-11-19 07:40:08,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:08,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:08,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 346 [2023-11-19 07:40:08,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:08,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 346 [2023-11-19 07:40:08,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:08,627 INFO L124 PetriNetUnfolderBase]: 48/127 cut-off events. [2023-11-19 07:40:08,627 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:40:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 127 events. 48/127 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 469 event pairs, 36 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 276. Up to 94 conditions per place. [2023-11-19 07:40:08,628 INFO L140 encePairwiseOnDemand]: 340/346 looper letters, 27 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-19 07:40:08,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 141 flow [2023-11-19 07:40:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-19 07:40:08,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3554913294797688 [2023-11-19 07:40:08,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-19 07:40:08,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-19 07:40:08,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:08,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-19 07:40:08,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,638 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 89 flow. Second operand 3 states and 369 transitions. [2023-11-19 07:40:08,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 141 flow [2023-11-19 07:40:08,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 135 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:08,640 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 79 flow [2023-11-19 07:40:08,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-11-19 07:40:08,642 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2023-11-19 07:40:08,642 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 79 flow [2023-11-19 07:40:08,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:08,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:40:08,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:08,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-19 07:40:08,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash 26074567, now seen corresponding path program 1 times [2023-11-19 07:40:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:08,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301904028] [2023-11-19 07:40:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:08,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:08,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301904028] [2023-11-19 07:40:08,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301904028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:08,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:08,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:08,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515410226] [2023-11-19 07:40:08,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:08,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:08,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:08,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 346 [2023-11-19 07:40:08,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:08,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 346 [2023-11-19 07:40:08,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:08,908 INFO L124 PetriNetUnfolderBase]: 40/106 cut-off events. [2023-11-19 07:40:08,908 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-19 07:40:08,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 106 events. 40/106 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 349 event pairs, 31 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 228. Up to 96 conditions per place. [2023-11-19 07:40:08,910 INFO L140 encePairwiseOnDemand]: 341/346 looper letters, 23 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-19 07:40:08,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 119 flow [2023-11-19 07:40:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-11-19 07:40:08,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36416184971098264 [2023-11-19 07:40:08,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-11-19 07:40:08,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-11-19 07:40:08,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:08,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-11-19 07:40:08,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,919 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 79 flow. Second operand 3 states and 378 transitions. [2023-11-19 07:40:08,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 119 flow [2023-11-19 07:40:08,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:08,921 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 69 flow [2023-11-19 07:40:08,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-11-19 07:40:08,922 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-11-19 07:40:08,922 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 69 flow [2023-11-19 07:40:08,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:08,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:08,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:40:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:08,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-19 07:40:08,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 808312652, now seen corresponding path program 1 times [2023-11-19 07:40:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18923083] [2023-11-19 07:40:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:09,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:09,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18923083] [2023-11-19 07:40:09,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18923083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:09,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:09,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:09,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863671797] [2023-11-19 07:40:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:09,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:09,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:09,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:09,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 346 [2023-11-19 07:40:09,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:09,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 346 [2023-11-19 07:40:09,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:09,135 INFO L124 PetriNetUnfolderBase]: 39/102 cut-off events. [2023-11-19 07:40:09,135 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:40:09,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 102 events. 39/102 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 338 event pairs, 26 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 217. Up to 87 conditions per place. [2023-11-19 07:40:09,137 INFO L140 encePairwiseOnDemand]: 343/346 looper letters, 25 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-19 07:40:09,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 131 flow [2023-11-19 07:40:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-11-19 07:40:09,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699421965317919 [2023-11-19 07:40:09,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-11-19 07:40:09,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-11-19 07:40:09,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:09,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-11-19 07:40:09,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,148 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 69 flow. Second operand 3 states and 384 transitions. [2023-11-19 07:40:09,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 131 flow [2023-11-19 07:40:09,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:09,150 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 82 flow [2023-11-19 07:40:09,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-11-19 07:40:09,151 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -9 predicate places. [2023-11-19 07:40:09,152 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 82 flow [2023-11-19 07:40:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:09,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:40:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:09,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-19 07:40:09,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash -712243659, now seen corresponding path program 1 times [2023-11-19 07:40:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492324558] [2023-11-19 07:40:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:09,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:09,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:09,211 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:40:09,212 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2023-11-19 07:40:09,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 42 remaining) [2023-11-19 07:40:09,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 42 remaining) [2023-11-19 07:40:09,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 42 remaining) [2023-11-19 07:40:09,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 42 remaining) [2023-11-19 07:40:09,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (36 of 42 remaining) [2023-11-19 07:40:09,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 42 remaining) [2023-11-19 07:40:09,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 42 remaining) [2023-11-19 07:40:09,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (33 of 42 remaining) [2023-11-19 07:40:09,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 42 remaining) [2023-11-19 07:40:09,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 42 remaining) [2023-11-19 07:40:09,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 42 remaining) [2023-11-19 07:40:09,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 42 remaining) [2023-11-19 07:40:09,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 42 remaining) [2023-11-19 07:40:09,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 42 remaining) [2023-11-19 07:40:09,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 42 remaining) [2023-11-19 07:40:09,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 42 remaining) [2023-11-19 07:40:09,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 42 remaining) [2023-11-19 07:40:09,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 42 remaining) [2023-11-19 07:40:09,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (22 of 42 remaining) [2023-11-19 07:40:09,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 42 remaining) [2023-11-19 07:40:09,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 42 remaining) [2023-11-19 07:40:09,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (19 of 42 remaining) [2023-11-19 07:40:09,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 42 remaining) [2023-11-19 07:40:09,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 42 remaining) [2023-11-19 07:40:09,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 42 remaining) [2023-11-19 07:40:09,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 42 remaining) [2023-11-19 07:40:09,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (14 of 42 remaining) [2023-11-19 07:40:09,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 42 remaining) [2023-11-19 07:40:09,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 42 remaining) [2023-11-19 07:40:09,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 42 remaining) [2023-11-19 07:40:09,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 42 remaining) [2023-11-19 07:40:09,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 42 remaining) [2023-11-19 07:40:09,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 42 remaining) [2023-11-19 07:40:09,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 42 remaining) [2023-11-19 07:40:09,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 42 remaining) [2023-11-19 07:40:09,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 42 remaining) [2023-11-19 07:40:09,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 42 remaining) [2023-11-19 07:40:09,232 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 42 remaining) [2023-11-19 07:40:09,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 42 remaining) [2023-11-19 07:40:09,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 42 remaining) [2023-11-19 07:40:09,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (0 of 42 remaining) [2023-11-19 07:40:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:09,234 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:09,237 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:40:09,237 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:40:09,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:40:09,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 284 transitions, 578 flow [2023-11-19 07:40:09,434 INFO L124 PetriNetUnfolderBase]: 35/318 cut-off events. [2023-11-19 07:40:09,434 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:40:09,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 318 events. 35/318 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1169 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 266. Up to 6 conditions per place. [2023-11-19 07:40:09,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 284 transitions, 578 flow [2023-11-19 07:40:09,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 284 transitions, 578 flow [2023-11-19 07:40:09,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:09,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 284 transitions, 578 flow [2023-11-19 07:40:09,448 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 284 transitions, 578 flow [2023-11-19 07:40:09,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 284 transitions, 578 flow [2023-11-19 07:40:09,522 INFO L124 PetriNetUnfolderBase]: 35/318 cut-off events. [2023-11-19 07:40:09,522 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:40:09,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 318 events. 35/318 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1169 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 266. Up to 6 conditions per place. [2023-11-19 07:40:09,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 40424 [2023-11-19 07:40:21,973 INFO L134 LiptonReduction]: Checked pairs total: 65484 [2023-11-19 07:40:21,974 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-11-19 07:40:21,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:21,977 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53e8fcb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:21,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 07:40:21,978 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:21,979 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:40:21,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:21,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:21,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:21,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:21,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 49918, now seen corresponding path program 1 times [2023-11-19 07:40:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814386566] [2023-11-19 07:40:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814386566] [2023-11-19 07:40:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814386566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:22,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37474288] [2023-11-19 07:40:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:22,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:22,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 605 [2023-11-19 07:40:22,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:22,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:22,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 605 [2023-11-19 07:40:22,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:23,722 INFO L124 PetriNetUnfolderBase]: 5140/8202 cut-off events. [2023-11-19 07:40:23,723 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-19 07:40:23,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 8202 events. 5140/8202 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 60295 event pairs, 4408 based on Foata normal form. 0/3662 useless extension candidates. Maximal degree in co-relation 8984. Up to 7933 conditions per place. [2023-11-19 07:40:23,808 INFO L140 encePairwiseOnDemand]: 594/605 looper letters, 70 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-11-19 07:40:23,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 78 transitions, 308 flow [2023-11-19 07:40:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-11-19 07:40:23,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39008264462809916 [2023-11-19 07:40:23,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-11-19 07:40:23,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-11-19 07:40:23,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:23,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-11-19 07:40:23,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:23,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:23,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:23,830 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 192 flow. Second operand 3 states and 708 transitions. [2023-11-19 07:40:23,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 78 transitions, 308 flow [2023-11-19 07:40:23,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:23,837 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 168 flow [2023-11-19 07:40:23,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=605, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-11-19 07:40:23,840 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -7 predicate places. [2023-11-19 07:40:23,840 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 168 flow [2023-11-19 07:40:23,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:23,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:23,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:23,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:23,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 49917, now seen corresponding path program 1 times [2023-11-19 07:40:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488092910] [2023-11-19 07:40:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:23,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:23,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488092910] [2023-11-19 07:40:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488092910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:23,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450399252] [2023-11-19 07:40:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:23,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:23,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 605 [2023-11-19 07:40:23,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:23,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:23,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 605 [2023-11-19 07:40:23,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:25,152 INFO L124 PetriNetUnfolderBase]: 3752/6353 cut-off events. [2023-11-19 07:40:25,153 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-11-19 07:40:25,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12534 conditions, 6353 events. 3752/6353 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 45618 event pairs, 2582 based on Foata normal form. 0/3329 useless extension candidates. Maximal degree in co-relation 12526. Up to 4853 conditions per place. [2023-11-19 07:40:25,226 INFO L140 encePairwiseOnDemand]: 600/605 looper letters, 135 selfloop transitions, 4 changer transitions 0/146 dead transitions. [2023-11-19 07:40:25,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 146 transitions, 587 flow [2023-11-19 07:40:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-11-19 07:40:25,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2023-11-19 07:40:25,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-11-19 07:40:25,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-11-19 07:40:25,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:25,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-11-19 07:40:25,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,244 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 168 flow. Second operand 3 states and 755 transitions. [2023-11-19 07:40:25,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 146 transitions, 587 flow [2023-11-19 07:40:25,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 146 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:25,253 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 197 flow [2023-11-19 07:40:25,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=605, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-11-19 07:40:25,255 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2023-11-19 07:40:25,256 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 197 flow [2023-11-19 07:40:25,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:25,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:25,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:25,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1107800024, now seen corresponding path program 1 times [2023-11-19 07:40:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044251381] [2023-11-19 07:40:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044251381] [2023-11-19 07:40:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044251381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:25,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:25,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647432051] [2023-11-19 07:40:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:25,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:25,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 605 [2023-11-19 07:40:25,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:25,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 605 [2023-11-19 07:40:25,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:27,104 INFO L124 PetriNetUnfolderBase]: 3606/6240 cut-off events. [2023-11-19 07:40:27,105 INFO L125 PetriNetUnfolderBase]: For 1891/1891 co-relation queries the response was YES. [2023-11-19 07:40:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14070 conditions, 6240 events. 3606/6240 cut-off events. For 1891/1891 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 46037 event pairs, 2023 based on Foata normal form. 0/3614 useless extension candidates. Maximal degree in co-relation 14059. Up to 3175 conditions per place. [2023-11-19 07:40:27,156 INFO L140 encePairwiseOnDemand]: 576/605 looper letters, 150 selfloop transitions, 25 changer transitions 0/182 dead transitions. [2023-11-19 07:40:27,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 182 transitions, 784 flow [2023-11-19 07:40:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 983 transitions. [2023-11-19 07:40:27,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406198347107438 [2023-11-19 07:40:27,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 983 transitions. [2023-11-19 07:40:27,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 983 transitions. [2023-11-19 07:40:27,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:27,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 983 transitions. [2023-11-19 07:40:27,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:27,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 605.0) internal successors, (3025), 5 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:27,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 605.0) internal successors, (3025), 5 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:27,174 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 197 flow. Second operand 4 states and 983 transitions. [2023-11-19 07:40:27,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 182 transitions, 784 flow [2023-11-19 07:40:27,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 182 transitions, 766 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:27,185 INFO L231 Difference]: Finished difference. Result has 84 places, 105 transitions, 421 flow [2023-11-19 07:40:27,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=605, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=84, PETRI_TRANSITIONS=105} [2023-11-19 07:40:27,188 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-11-19 07:40:27,188 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 105 transitions, 421 flow [2023-11-19 07:40:27,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:27,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:27,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:27,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:27,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:27,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1107800023, now seen corresponding path program 1 times [2023-11-19 07:40:27,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:27,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622790555] [2023-11-19 07:40:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:27,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:27,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622790555] [2023-11-19 07:40:27,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622790555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:27,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:27,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:27,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706343745] [2023-11-19 07:40:27,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:27,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:27,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:27,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 605 [2023-11-19 07:40:27,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 105 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:27,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:27,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 605 [2023-11-19 07:40:27,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:28,278 INFO L124 PetriNetUnfolderBase]: 2801/4895 cut-off events. [2023-11-19 07:40:28,278 INFO L125 PetriNetUnfolderBase]: For 1781/1781 co-relation queries the response was YES. [2023-11-19 07:40:28,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12507 conditions, 4895 events. 2801/4895 cut-off events. For 1781/1781 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 34897 event pairs, 2165 based on Foata normal form. 378/3461 useless extension candidates. Maximal degree in co-relation 12493. Up to 4624 conditions per place. [2023-11-19 07:40:28,332 INFO L140 encePairwiseOnDemand]: 596/605 looper letters, 89 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-11-19 07:40:28,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 585 flow [2023-11-19 07:40:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2023-11-19 07:40:28,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2023-11-19 07:40:28,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2023-11-19 07:40:28,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2023-11-19 07:40:28,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:28,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2023-11-19 07:40:28,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,349 INFO L175 Difference]: Start difference. First operand has 84 places, 105 transitions, 421 flow. Second operand 3 states and 704 transitions. [2023-11-19 07:40:28,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 585 flow [2023-11-19 07:40:28,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 585 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:28,368 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 407 flow [2023-11-19 07:40:28,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=605, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=78, PETRI_TRANSITIONS=97} [2023-11-19 07:40:28,370 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2023-11-19 07:40:28,370 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 407 flow [2023-11-19 07:40:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:28,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:28,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:40:28,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:28,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 60554535, now seen corresponding path program 1 times [2023-11-19 07:40:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:28,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519804103] [2023-11-19 07:40:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:28,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:28,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519804103] [2023-11-19 07:40:28,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519804103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:28,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052905090] [2023-11-19 07:40:28,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:28,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:28,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:28,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 605 [2023-11-19 07:40:28,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 97 transitions, 407 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:28,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:28,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 605 [2023-11-19 07:40:28,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:29,631 INFO L124 PetriNetUnfolderBase]: 3061/5342 cut-off events. [2023-11-19 07:40:29,631 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2023-11-19 07:40:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13644 conditions, 5342 events. 3061/5342 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 38516 event pairs, 2051 based on Foata normal form. 0/3450 useless extension candidates. Maximal degree in co-relation 13628. Up to 4629 conditions per place. [2023-11-19 07:40:29,675 INFO L140 encePairwiseOnDemand]: 597/605 looper letters, 115 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2023-11-19 07:40:29,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 762 flow [2023-11-19 07:40:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2023-11-19 07:40:29,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39834710743801655 [2023-11-19 07:40:29,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2023-11-19 07:40:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2023-11-19 07:40:29,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:29,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2023-11-19 07:40:29,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,692 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 407 flow. Second operand 3 states and 723 transitions. [2023-11-19 07:40:29,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 762 flow [2023-11-19 07:40:29,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 130 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:29,705 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 472 flow [2023-11-19 07:40:29,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=605, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-11-19 07:40:29,707 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2023-11-19 07:40:29,707 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 472 flow [2023-11-19 07:40:29,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:29,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:29,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:40:29,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err7ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:29,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1789973009, now seen corresponding path program 1 times [2023-11-19 07:40:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137986402] [2023-11-19 07:40:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:29,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:29,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137986402] [2023-11-19 07:40:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137986402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:29,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:29,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553980434] [2023-11-19 07:40:29,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:29,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 605 [2023-11-19 07:40:29,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:29,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:29,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 605 [2023-11-19 07:40:29,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:30,114 INFO L124 PetriNetUnfolderBase]: 772/1351 cut-off events. [2023-11-19 07:40:30,114 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2023-11-19 07:40:30,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 1351 events. 772/1351 cut-off events. For 1215/1215 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7248 event pairs, 313 based on Foata normal form. 0/1161 useless extension candidates. Maximal degree in co-relation 4031. Up to 1131 conditions per place. [2023-11-19 07:40:30,128 INFO L140 encePairwiseOnDemand]: 598/605 looper letters, 80 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-11-19 07:40:30,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 536 flow [2023-11-19 07:40:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-11-19 07:40:30,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39008264462809916 [2023-11-19 07:40:30,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-11-19 07:40:30,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-11-19 07:40:30,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:30,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-11-19 07:40:30,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:30,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:30,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:30,143 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 472 flow. Second operand 3 states and 708 transitions. [2023-11-19 07:40:30,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 536 flow [2023-11-19 07:40:30,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 520 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:30,149 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 319 flow [2023-11-19 07:40:30,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=605, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2023-11-19 07:40:30,151 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2023-11-19 07:40:30,151 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 319 flow [2023-11-19 07:40:30,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:30,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:30,152 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:40:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:40:30,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:40:30,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 348269617, now seen corresponding path program 1 times [2023-11-19 07:40:30,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089495917] [2023-11-19 07:40:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:30,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:30,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:30,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:40:30,199 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2023-11-19 07:40:30,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2023-11-19 07:40:30,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2023-11-19 07:40:30,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2023-11-19 07:40:30,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2023-11-19 07:40:30,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (55 of 61 remaining) [2023-11-19 07:40:30,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2023-11-19 07:40:30,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2023-11-19 07:40:30,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (52 of 61 remaining) [2023-11-19 07:40:30,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2023-11-19 07:40:30,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2023-11-19 07:40:30,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2023-11-19 07:40:30,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2023-11-19 07:40:30,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2023-11-19 07:40:30,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2023-11-19 07:40:30,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 61 remaining) [2023-11-19 07:40:30,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 61 remaining) [2023-11-19 07:40:30,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2023-11-19 07:40:30,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2023-11-19 07:40:30,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (41 of 61 remaining) [2023-11-19 07:40:30,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2023-11-19 07:40:30,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2023-11-19 07:40:30,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (38 of 61 remaining) [2023-11-19 07:40:30,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 61 remaining) [2023-11-19 07:40:30,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 61 remaining) [2023-11-19 07:40:30,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 61 remaining) [2023-11-19 07:40:30,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 61 remaining) [2023-11-19 07:40:30,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (33 of 61 remaining) [2023-11-19 07:40:30,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 61 remaining) [2023-11-19 07:40:30,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 61 remaining) [2023-11-19 07:40:30,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (30 of 61 remaining) [2023-11-19 07:40:30,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 61 remaining) [2023-11-19 07:40:30,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2023-11-19 07:40:30,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2023-11-19 07:40:30,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2023-11-19 07:40:30,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2023-11-19 07:40:30,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2023-11-19 07:40:30,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2023-11-19 07:40:30,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2023-11-19 07:40:30,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2023-11-19 07:40:30,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2023-11-19 07:40:30,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (19 of 61 remaining) [2023-11-19 07:40:30,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2023-11-19 07:40:30,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2023-11-19 07:40:30,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2023-11-19 07:40:30,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2023-11-19 07:40:30,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (14 of 61 remaining) [2023-11-19 07:40:30,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2023-11-19 07:40:30,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2023-11-19 07:40:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (11 of 61 remaining) [2023-11-19 07:40:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2023-11-19 07:40:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2023-11-19 07:40:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 61 remaining) [2023-11-19 07:40:30,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 61 remaining) [2023-11-19 07:40:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 61 remaining) [2023-11-19 07:40:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 61 remaining) [2023-11-19 07:40:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 61 remaining) [2023-11-19 07:40:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 61 remaining) [2023-11-19 07:40:30,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 61 remaining) [2023-11-19 07:40:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 61 remaining) [2023-11-19 07:40:30,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONMEMORY_LEAK (0 of 61 remaining) [2023-11-19 07:40:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:40:30,213 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:30,214 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:40:30,214 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:40:30,299 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:40:30,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 409 transitions, 836 flow [2023-11-19 07:40:30,504 INFO L124 PetriNetUnfolderBase]: 52/461 cut-off events. [2023-11-19 07:40:30,505 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:40:30,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 461 events. 52/461 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2024 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 390. Up to 8 conditions per place. [2023-11-19 07:40:30,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 409 transitions, 836 flow [2023-11-19 07:40:30,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 409 transitions, 836 flow [2023-11-19 07:40:30,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:30,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 409 transitions, 836 flow [2023-11-19 07:40:30,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 409 transitions, 836 flow [2023-11-19 07:40:30,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 409 transitions, 836 flow [2023-11-19 07:40:30,735 INFO L124 PetriNetUnfolderBase]: 52/461 cut-off events. [2023-11-19 07:40:30,735 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:40:30,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 461 events. 52/461 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2024 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 390. Up to 8 conditions per place. [2023-11-19 07:40:30,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 107136