./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:13:04,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:13:04,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:13:04,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:13:04,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:13:04,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:13:04,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:13:04,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:13:04,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:13:04,199 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:13:04,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:13:04,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:13:04,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:13:04,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:13:04,202 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:13:04,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:13:04,203 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:13:04,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:13:04,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:13:04,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:13:04,205 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:13:04,206 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:13:04,206 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:13:04,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:13:04,207 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:13:04,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:13:04,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:13:04,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:13:04,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:13:04,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:13:04,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:13:04,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:13:04,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:13:04,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:13:04,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:13:04,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:13:04,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:13:04,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:13:04,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:13:04,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:13:04,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:13:04,213 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_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2023-11-29 00:13:04,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:13:04,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:13:04,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:13:04,469 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:13:04,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:13:04,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/mult-dist.wvr.c [2023-11-29 00:13:07,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:13:07,339 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:13:07,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/sv-benchmarks/c/weaver/mult-dist.wvr.c [2023-11-29 00:13:07,345 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/data/d56e6053e/dcc3c1d7fdb74995afe454e871184ea4/FLAGacb0865e0 [2023-11-29 00:13:07,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/data/d56e6053e/dcc3c1d7fdb74995afe454e871184ea4 [2023-11-29 00:13:07,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:13:07,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:13:07,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:13:07,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:13:07,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:13:07,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297b7ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07, skipping insertion in model container [2023-11-29 00:13:07,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:13:07,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:13:07,563 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:13:07,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:13:07,603 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:13:07,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07 WrapperNode [2023-11-29 00:13:07,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:13:07,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:13:07,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:13:07,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:13:07,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,638 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-29 00:13:07,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:13:07,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:13:07,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:13:07,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:13:07,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,666 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 00:13:07,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,679 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:13:07,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:13:07,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:13:07,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:13:07,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (1/1) ... [2023-11-29 00:13:07,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:13:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:07,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:13:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:13:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:13:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:13:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:13:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:13:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:13:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:13:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:13:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:13:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:13:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:13:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:13:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:13:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:13:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:13:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:13:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:13:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:13:07,766 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:13:07,875 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:13:07,876 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:13:08,093 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:13:08,259 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:13:08,259 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 00:13:08,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:13:08 BoogieIcfgContainer [2023-11-29 00:13:08,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:13:08,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:13:08,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:13:08,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:13:08,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:13:07" (1/3) ... [2023-11-29 00:13:08,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f115c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:13:08, skipping insertion in model container [2023-11-29 00:13:08,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:07" (2/3) ... [2023-11-29 00:13:08,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f115c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:13:08, skipping insertion in model container [2023-11-29 00:13:08,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:13:08" (3/3) ... [2023-11-29 00:13:08,269 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-11-29 00:13:08,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:13:08,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 00:13:08,295 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:13:08,345 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:13:08,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 115 flow [2023-11-29 00:13:08,407 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2023-11-29 00:13:08,407 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:13:08,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 3/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-29 00:13:08,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 47 transitions, 115 flow [2023-11-29 00:13:08,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 43 transitions, 104 flow [2023-11-29 00:13:08,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:13:08,430 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;@2f551b2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:13:08,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 00:13:08,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:13:08,433 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:13:08,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:13:08,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:08,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:13:08,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:08,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash 9919, now seen corresponding path program 1 times [2023-11-29 00:13:08,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:08,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858912102] [2023-11-29 00:13:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:08,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:08,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:08,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858912102] [2023-11-29 00:13:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858912102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:08,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:08,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274304584] [2023-11-29 00:13:08,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:08,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:08,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:08,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-29 00:13:08,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:08,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:08,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-29 00:13:08,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:08,959 INFO L124 PetriNetUnfolderBase]: 280/484 cut-off events. [2023-11-29 00:13:08,959 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-29 00:13:08,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 484 events. 280/484 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1569 event pairs, 178 based on Foata normal form. 1/339 useless extension candidates. Maximal degree in co-relation 783. Up to 401 conditions per place. [2023-11-29 00:13:08,966 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-29 00:13:08,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 140 flow [2023-11-29 00:13:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-29 00:13:08,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2023-11-29 00:13:08,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-29 00:13:08,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-29 00:13:08,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:08,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-29 00:13:08,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:08,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:08,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:08,991 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 104 flow. Second operand 3 states and 88 transitions. [2023-11-29 00:13:08,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 140 flow [2023-11-29 00:13:08,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 00:13:08,997 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 86 flow [2023-11-29 00:13:08,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-29 00:13:09,003 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-11-29 00:13:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 86 flow [2023-11-29 00:13:09,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:09,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:13:09,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:13:09,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:09,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash 9920, now seen corresponding path program 1 times [2023-11-29 00:13:09,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:09,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864320483] [2023-11-29 00:13:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:09,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:09,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864320483] [2023-11-29 00:13:09,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864320483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:09,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:09,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:09,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753529665] [2023-11-29 00:13:09,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:09,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:09,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-29 00:13:09,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:09,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-29 00:13:09,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:09,263 INFO L124 PetriNetUnfolderBase]: 199/343 cut-off events. [2023-11-29 00:13:09,263 INFO L125 PetriNetUnfolderBase]: For 13/15 co-relation queries the response was YES. [2023-11-29 00:13:09,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 343 events. 199/343 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1049 event pairs, 124 based on Foata normal form. 28/263 useless extension candidates. Maximal degree in co-relation 646. Up to 292 conditions per place. [2023-11-29 00:13:09,267 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-29 00:13:09,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 122 flow [2023-11-29 00:13:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-29 00:13:09,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-29 00:13:09,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:09,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,273 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 86 flow. Second operand 3 states and 91 transitions. [2023-11-29 00:13:09,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 122 flow [2023-11-29 00:13:09,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:09,275 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 83 flow [2023-11-29 00:13:09,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-29 00:13:09,276 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-11-29 00:13:09,276 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 83 flow [2023-11-29 00:13:09,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:09,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:13:09,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:13:09,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:09,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash 295764153, now seen corresponding path program 1 times [2023-11-29 00:13:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:09,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434653208] [2023-11-29 00:13:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:09,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434653208] [2023-11-29 00:13:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434653208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:09,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:09,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:09,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644456744] [2023-11-29 00:13:09,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:09,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:09,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-29 00:13:09,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:09,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-29 00:13:09,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:09,440 INFO L124 PetriNetUnfolderBase]: 220/374 cut-off events. [2023-11-29 00:13:09,441 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-29 00:13:09,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 374 events. 220/374 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1102 event pairs, 138 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 710. Up to 325 conditions per place. [2023-11-29 00:13:09,445 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-29 00:13:09,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 123 flow [2023-11-29 00:13:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-29 00:13:09,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-11-29 00:13:09,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-29 00:13:09,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-29 00:13:09,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:09,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-29 00:13:09,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,450 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 83 flow. Second operand 3 states and 87 transitions. [2023-11-29 00:13:09,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 123 flow [2023-11-29 00:13:09,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:09,452 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 80 flow [2023-11-29 00:13:09,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-29 00:13:09,453 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2023-11-29 00:13:09,453 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 80 flow [2023-11-29 00:13:09,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:09,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:13:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:13:09,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:09,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash 295764154, now seen corresponding path program 1 times [2023-11-29 00:13:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053405443] [2023-11-29 00:13:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:09,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053405443] [2023-11-29 00:13:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053405443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:09,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:09,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327599226] [2023-11-29 00:13:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:09,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-29 00:13:09,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:09,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-29 00:13:09,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:09,635 INFO L124 PetriNetUnfolderBase]: 199/333 cut-off events. [2023-11-29 00:13:09,635 INFO L125 PetriNetUnfolderBase]: For 13/15 co-relation queries the response was YES. [2023-11-29 00:13:09,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 333 events. 199/333 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 975 event pairs, 124 based on Foata normal form. 9/244 useless extension candidates. Maximal degree in co-relation 636. Up to 292 conditions per place. [2023-11-29 00:13:09,639 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-29 00:13:09,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 116 flow [2023-11-29 00:13:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-29 00:13:09,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-29 00:13:09,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:09,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,643 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 80 flow. Second operand 3 states and 91 transitions. [2023-11-29 00:13:09,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 116 flow [2023-11-29 00:13:09,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:09,644 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 77 flow [2023-11-29 00:13:09,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=77, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-29 00:13:09,645 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-11-29 00:13:09,646 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 77 flow [2023-11-29 00:13:09,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:09,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:09,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:13:09,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2132229365, now seen corresponding path program 1 times [2023-11-29 00:13:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965407119] [2023-11-29 00:13:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965407119] [2023-11-29 00:13:09,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965407119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:09,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:09,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046478760] [2023-11-29 00:13:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:09,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:09,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-29 00:13:09,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:09,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-29 00:13:09,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:09,786 INFO L124 PetriNetUnfolderBase]: 220/352 cut-off events. [2023-11-29 00:13:09,787 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-29 00:13:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 352 events. 220/352 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 953 event pairs, 138 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 688. Up to 325 conditions per place. [2023-11-29 00:13:09,790 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-29 00:13:09,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 117 flow [2023-11-29 00:13:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-29 00:13:09,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-11-29 00:13:09,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-29 00:13:09,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-29 00:13:09,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:09,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-29 00:13:09,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,795 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 77 flow. Second operand 3 states and 87 transitions. [2023-11-29 00:13:09,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 117 flow [2023-11-29 00:13:09,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:09,796 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 74 flow [2023-11-29 00:13:09,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-29 00:13:09,797 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2023-11-29 00:13:09,797 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 74 flow [2023-11-29 00:13:09,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:09,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:13:09,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:09,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2132229366, now seen corresponding path program 1 times [2023-11-29 00:13:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598947262] [2023-11-29 00:13:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598947262] [2023-11-29 00:13:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598947262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:09,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361522921] [2023-11-29 00:13:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:09,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-29 00:13:09,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:09,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-29 00:13:09,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:09,955 INFO L124 PetriNetUnfolderBase]: 199/319 cut-off events. [2023-11-29 00:13:09,955 INFO L125 PetriNetUnfolderBase]: For 13/15 co-relation queries the response was YES. [2023-11-29 00:13:09,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 319 events. 199/319 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 856 event pairs, 124 based on Foata normal form. 11/246 useless extension candidates. Maximal degree in co-relation 622. Up to 292 conditions per place. [2023-11-29 00:13:09,958 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-29 00:13:09,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 110 flow [2023-11-29 00:13:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-29 00:13:09,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-29 00:13:09,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:09,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-29 00:13:09,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,962 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 3 states and 91 transitions. [2023-11-29 00:13:09,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 110 flow [2023-11-29 00:13:09,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:09,963 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 71 flow [2023-11-29 00:13:09,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-29 00:13:09,964 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2023-11-29 00:13:09,965 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 71 flow [2023-11-29 00:13:09,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:09,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:09,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:09,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:13:09,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:09,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash -77619352, now seen corresponding path program 1 times [2023-11-29 00:13:09,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:09,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590045390] [2023-11-29 00:13:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:10,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:10,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590045390] [2023-11-29 00:13:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590045390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:10,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:10,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:13:10,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57230303] [2023-11-29 00:13:10,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:10,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:10,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:10,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:10,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:10,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:10,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:10,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:10,332 INFO L124 PetriNetUnfolderBase]: 386/615 cut-off events. [2023-11-29 00:13:10,332 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2023-11-29 00:13:10,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 615 events. 386/615 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2179 event pairs, 124 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 1200. Up to 349 conditions per place. [2023-11-29 00:13:10,338 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2023-11-29 00:13:10,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 184 flow [2023-11-29 00:13:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-29 00:13:10,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8014184397163121 [2023-11-29 00:13:10,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-29 00:13:10,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-29 00:13:10,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:10,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-29 00:13:10,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,342 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 71 flow. Second operand 3 states and 113 transitions. [2023-11-29 00:13:10,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 184 flow [2023-11-29 00:13:10,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:10,343 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 96 flow [2023-11-29 00:13:10,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-29 00:13:10,344 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-11-29 00:13:10,344 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 96 flow [2023-11-29 00:13:10,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:10,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:10,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:13:10,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:10,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:10,346 INFO L85 PathProgramCache]: Analyzing trace with hash -609916501, now seen corresponding path program 1 times [2023-11-29 00:13:10,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:10,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134600482] [2023-11-29 00:13:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134600482] [2023-11-29 00:13:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134600482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64258614] [2023-11-29 00:13:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:10,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:10,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:10,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:10,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:10,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:10,891 INFO L124 PetriNetUnfolderBase]: 544/818 cut-off events. [2023-11-29 00:13:10,891 INFO L125 PetriNetUnfolderBase]: For 169/173 co-relation queries the response was YES. [2023-11-29 00:13:10,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 818 events. 544/818 cut-off events. For 169/173 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2895 event pairs, 176 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 1953. Up to 554 conditions per place. [2023-11-29 00:13:10,899 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 47 selfloop transitions, 18 changer transitions 3/77 dead transitions. [2023-11-29 00:13:10,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 369 flow [2023-11-29 00:13:10,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2023-11-29 00:13:10,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112462006079028 [2023-11-29 00:13:10,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2023-11-29 00:13:10,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2023-11-29 00:13:10,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:10,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2023-11-29 00:13:10,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,904 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 96 flow. Second operand 7 states and 234 transitions. [2023-11-29 00:13:10,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 369 flow [2023-11-29 00:13:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 77 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:10,908 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 220 flow [2023-11-29 00:13:10,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-29 00:13:10,909 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-11-29 00:13:10,909 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 220 flow [2023-11-29 00:13:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:10,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:10,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:10,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:13:10,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:10,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1095744237, now seen corresponding path program 2 times [2023-11-29 00:13:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472701402] [2023-11-29 00:13:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472701402] [2023-11-29 00:13:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472701402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272545750] [2023-11-29 00:13:11,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:13:11,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:11,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:11,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:13:11,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:13:11,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:11,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:13:11,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:11,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272545750] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:12,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:13:12,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-11-29 00:13:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418030445] [2023-11-29 00:13:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:12,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:13:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:13:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:13:12,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:12,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:12,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:12,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:12,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:12,778 INFO L124 PetriNetUnfolderBase]: 849/1290 cut-off events. [2023-11-29 00:13:12,778 INFO L125 PetriNetUnfolderBase]: For 1219/1233 co-relation queries the response was YES. [2023-11-29 00:13:12,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4027 conditions, 1290 events. 849/1290 cut-off events. For 1219/1233 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5238 event pairs, 231 based on Foata normal form. 14/1287 useless extension candidates. Maximal degree in co-relation 4010. Up to 454 conditions per place. [2023-11-29 00:13:12,794 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 90 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2023-11-29 00:13:12,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 120 transitions, 722 flow [2023-11-29 00:13:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:13:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:13:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2023-11-29 00:13:12,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.773936170212766 [2023-11-29 00:13:12,796 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 291 transitions. [2023-11-29 00:13:12,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 291 transitions. [2023-11-29 00:13:12,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:12,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 291 transitions. [2023-11-29 00:13:12,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:12,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:12,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:12,800 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 220 flow. Second operand 8 states and 291 transitions. [2023-11-29 00:13:12,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 120 transitions, 722 flow [2023-11-29 00:13:12,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 120 transitions, 700 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-29 00:13:12,810 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 353 flow [2023-11-29 00:13:12,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=353, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-11-29 00:13:12,811 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-29 00:13:12,811 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 353 flow [2023-11-29 00:13:12,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:12,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:12,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:12,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:13:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:13,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:13,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash -334161496, now seen corresponding path program 1 times [2023-11-29 00:13:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480197796] [2023-11-29 00:13:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:13,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480197796] [2023-11-29 00:13:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480197796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452247990] [2023-11-29 00:13:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:13,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:13,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:13,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:13,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:13:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:13,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:13:13,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:13,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452247990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:13:14,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:13:14,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-29 00:13:14,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071646499] [2023-11-29 00:13:14,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:13:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:13:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:13:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:13:14,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 353 flow. Second operand has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 15 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:14,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:15,482 INFO L124 PetriNetUnfolderBase]: 1451/2315 cut-off events. [2023-11-29 00:13:15,482 INFO L125 PetriNetUnfolderBase]: For 5465/5489 co-relation queries the response was YES. [2023-11-29 00:13:15,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8667 conditions, 2315 events. 1451/2315 cut-off events. For 5465/5489 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11701 event pairs, 194 based on Foata normal form. 33/2333 useless extension candidates. Maximal degree in co-relation 8644. Up to 723 conditions per place. [2023-11-29 00:13:15,530 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 195 selfloop transitions, 70 changer transitions 0/274 dead transitions. [2023-11-29 00:13:15,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 274 transitions, 2019 flow [2023-11-29 00:13:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:13:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 00:13:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 762 transitions. [2023-11-29 00:13:15,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7369439071566731 [2023-11-29 00:13:15,534 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 762 transitions. [2023-11-29 00:13:15,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 762 transitions. [2023-11-29 00:13:15,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:15,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 762 transitions. [2023-11-29 00:13:15,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 34.63636363636363) internal successors, (762), 22 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:15,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 47.0) internal successors, (1081), 23 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:15,541 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 47.0) internal successors, (1081), 23 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:15,541 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 353 flow. Second operand 22 states and 762 transitions. [2023-11-29 00:13:15,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 274 transitions, 2019 flow [2023-11-29 00:13:15,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 274 transitions, 1947 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-11-29 00:13:15,563 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1036 flow [2023-11-29 00:13:15,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1036, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2023-11-29 00:13:15,564 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2023-11-29 00:13:15,564 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1036 flow [2023-11-29 00:13:15,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 15 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:15,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:15,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:15,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:13:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:15,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:15,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 368369408, now seen corresponding path program 2 times [2023-11-29 00:13:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113186519] [2023-11-29 00:13:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:15,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113186519] [2023-11-29 00:13:15,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113186519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441664644] [2023-11-29 00:13:15,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:13:15,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:15,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:15,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:15,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:13:16,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:13:16,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:16,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:13:16,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:16,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:16,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441664644] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:13:16,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:13:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-11-29 00:13:16,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414432651] [2023-11-29 00:13:16,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:13:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:13:16,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:13:16,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:13:16,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:16,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1036 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:16,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:16,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:16,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:17,549 INFO L124 PetriNetUnfolderBase]: 1860/2811 cut-off events. [2023-11-29 00:13:17,549 INFO L125 PetriNetUnfolderBase]: For 26333/26362 co-relation queries the response was YES. [2023-11-29 00:13:17,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15954 conditions, 2811 events. 1860/2811 cut-off events. For 26333/26362 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13439 event pairs, 538 based on Foata normal form. 12/2785 useless extension candidates. Maximal degree in co-relation 15913. Up to 1834 conditions per place. [2023-11-29 00:13:17,593 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 171 selfloop transitions, 98 changer transitions 0/278 dead transitions. [2023-11-29 00:13:17,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 278 transitions, 3087 flow [2023-11-29 00:13:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:13:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:13:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 690 transitions. [2023-11-29 00:13:17,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6990881458966566 [2023-11-29 00:13:17,597 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 690 transitions. [2023-11-29 00:13:17,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 690 transitions. [2023-11-29 00:13:17,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:17,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 690 transitions. [2023-11-29 00:13:17,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.857142857142854) internal successors, (690), 21 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:17,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:17,603 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:17,603 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1036 flow. Second operand 21 states and 690 transitions. [2023-11-29 00:13:17,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 278 transitions, 3087 flow [2023-11-29 00:13:17,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 278 transitions, 2909 flow, removed 89 selfloop flow, removed 0 redundant places. [2023-11-29 00:13:17,688 INFO L231 Difference]: Finished difference. Result has 132 places, 194 transitions, 2168 flow [2023-11-29 00:13:17,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2168, PETRI_PLACES=132, PETRI_TRANSITIONS=194} [2023-11-29 00:13:17,689 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 82 predicate places. [2023-11-29 00:13:17,690 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 194 transitions, 2168 flow [2023-11-29 00:13:17,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:17,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:17,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:17,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:13:17,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 00:13:17,893 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2066735845, now seen corresponding path program 1 times [2023-11-29 00:13:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939868866] [2023-11-29 00:13:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939868866] [2023-11-29 00:13:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939868866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:18,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:18,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803856715] [2023-11-29 00:13:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:18,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:18,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:18,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:18,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 194 transitions, 2168 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:18,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:18,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:18,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:18,742 INFO L124 PetriNetUnfolderBase]: 1868/2960 cut-off events. [2023-11-29 00:13:18,742 INFO L125 PetriNetUnfolderBase]: For 52712/52746 co-relation queries the response was YES. [2023-11-29 00:13:18,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19505 conditions, 2960 events. 1868/2960 cut-off events. For 52712/52746 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15210 event pairs, 562 based on Foata normal form. 16/2941 useless extension candidates. Maximal degree in co-relation 19449. Up to 1666 conditions per place. [2023-11-29 00:13:18,784 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 171 selfloop transitions, 43 changer transitions 13/236 dead transitions. [2023-11-29 00:13:18,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 2991 flow [2023-11-29 00:13:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2023-11-29 00:13:18,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477203647416414 [2023-11-29 00:13:18,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 246 transitions. [2023-11-29 00:13:18,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 246 transitions. [2023-11-29 00:13:18,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:18,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 246 transitions. [2023-11-29 00:13:18,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:18,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:18,789 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:18,789 INFO L175 Difference]: Start difference. First operand has 132 places, 194 transitions, 2168 flow. Second operand 7 states and 246 transitions. [2023-11-29 00:13:18,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 2991 flow [2023-11-29 00:13:18,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 236 transitions, 2663 flow, removed 160 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:18,924 INFO L231 Difference]: Finished difference. Result has 139 places, 193 transitions, 1928 flow [2023-11-29 00:13:18,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1928, PETRI_PLACES=139, PETRI_TRANSITIONS=193} [2023-11-29 00:13:18,925 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 89 predicate places. [2023-11-29 00:13:18,926 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 193 transitions, 1928 flow [2023-11-29 00:13:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:18,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:18,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:18,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:13:18,927 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:18,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -110356823, now seen corresponding path program 3 times [2023-11-29 00:13:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764078223] [2023-11-29 00:13:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764078223] [2023-11-29 00:13:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764078223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68855937] [2023-11-29 00:13:19,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:13:19,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:19,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:19,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:19,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:13:19,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:13:19,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:19,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:13:19,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:19,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68855937] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:19,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:13:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 16 [2023-11-29 00:13:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336698064] [2023-11-29 00:13:19,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:19,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:13:19,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:19,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 193 transitions, 1928 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:19,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:19,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:19,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:20,503 INFO L124 PetriNetUnfolderBase]: 2037/3160 cut-off events. [2023-11-29 00:13:20,503 INFO L125 PetriNetUnfolderBase]: For 54565/54576 co-relation queries the response was YES. [2023-11-29 00:13:20,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20744 conditions, 3160 events. 2037/3160 cut-off events. For 54565/54576 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15935 event pairs, 461 based on Foata normal form. 10/3145 useless extension candidates. Maximal degree in co-relation 20685. Up to 1510 conditions per place. [2023-11-29 00:13:20,532 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 192 selfloop transitions, 70 changer transitions 0/271 dead transitions. [2023-11-29 00:13:20,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 271 transitions, 3103 flow [2023-11-29 00:13:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:13:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:13:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2023-11-29 00:13:20,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7210401891252955 [2023-11-29 00:13:20,534 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 305 transitions. [2023-11-29 00:13:20,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 305 transitions. [2023-11-29 00:13:20,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:20,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 305 transitions. [2023-11-29 00:13:20,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.888888888888886) internal successors, (305), 9 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:20,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:20,537 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:20,537 INFO L175 Difference]: Start difference. First operand has 139 places, 193 transitions, 1928 flow. Second operand 9 states and 305 transitions. [2023-11-29 00:13:20,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 271 transitions, 3103 flow [2023-11-29 00:13:20,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 271 transitions, 2997 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-29 00:13:20,678 INFO L231 Difference]: Finished difference. Result has 144 places, 228 transitions, 2454 flow [2023-11-29 00:13:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2454, PETRI_PLACES=144, PETRI_TRANSITIONS=228} [2023-11-29 00:13:20,679 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2023-11-29 00:13:20,679 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 228 transitions, 2454 flow [2023-11-29 00:13:20,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:20,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:20,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:20,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:13:20,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:13:20,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1479090092, now seen corresponding path program 3 times [2023-11-29 00:13:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741689584] [2023-11-29 00:13:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:21,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741689584] [2023-11-29 00:13:21,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741689584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:21,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937211092] [2023-11-29 00:13:21,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:13:21,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:21,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:21,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:13:21,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:13:21,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:21,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:13:21,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:21,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937211092] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:21,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:13:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 15 [2023-11-29 00:13:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209722151] [2023-11-29 00:13:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:13:21,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:21,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 228 transitions, 2454 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:21,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:21,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:21,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:22,976 INFO L124 PetriNetUnfolderBase]: 2438/3844 cut-off events. [2023-11-29 00:13:22,976 INFO L125 PetriNetUnfolderBase]: For 77351/77436 co-relation queries the response was YES. [2023-11-29 00:13:22,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27398 conditions, 3844 events. 2438/3844 cut-off events. For 77351/77436 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20699 event pairs, 484 based on Foata normal form. 29/3837 useless extension candidates. Maximal degree in co-relation 27336. Up to 1196 conditions per place. [2023-11-29 00:13:23,017 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 232 selfloop transitions, 85 changer transitions 0/326 dead transitions. [2023-11-29 00:13:23,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 326 transitions, 4241 flow [2023-11-29 00:13:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:13:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:13:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 322 transitions. [2023-11-29 00:13:23,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7612293144208038 [2023-11-29 00:13:23,019 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 322 transitions. [2023-11-29 00:13:23,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 322 transitions. [2023-11-29 00:13:23,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:23,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 322 transitions. [2023-11-29 00:13:23,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.77777777777778) internal successors, (322), 9 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:23,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:23,022 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:23,023 INFO L175 Difference]: Start difference. First operand has 144 places, 228 transitions, 2454 flow. Second operand 9 states and 322 transitions. [2023-11-29 00:13:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 326 transitions, 4241 flow [2023-11-29 00:13:23,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 326 transitions, 4081 flow, removed 69 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:23,254 INFO L231 Difference]: Finished difference. Result has 159 places, 250 transitions, 3013 flow [2023-11-29 00:13:23,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3013, PETRI_PLACES=159, PETRI_TRANSITIONS=250} [2023-11-29 00:13:23,255 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 109 predicate places. [2023-11-29 00:13:23,255 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 250 transitions, 3013 flow [2023-11-29 00:13:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:23,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:23,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:23,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:13:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:23,458 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:23,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash -443458867, now seen corresponding path program 2 times [2023-11-29 00:13:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:23,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608020806] [2023-11-29 00:13:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608020806] [2023-11-29 00:13:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608020806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:23,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101683060] [2023-11-29 00:13:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:23,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:23,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:23,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 250 transitions, 3013 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:23,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:23,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:23,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:24,489 INFO L124 PetriNetUnfolderBase]: 2492/3943 cut-off events. [2023-11-29 00:13:24,489 INFO L125 PetriNetUnfolderBase]: For 98534/98601 co-relation queries the response was YES. [2023-11-29 00:13:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30000 conditions, 3943 events. 2492/3943 cut-off events. For 98534/98601 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21432 event pairs, 793 based on Foata normal form. 15/3903 useless extension candidates. Maximal degree in co-relation 29931. Up to 2853 conditions per place. [2023-11-29 00:13:24,524 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 234 selfloop transitions, 59 changer transitions 7/309 dead transitions. [2023-11-29 00:13:24,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 309 transitions, 4360 flow [2023-11-29 00:13:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2023-11-29 00:13:24,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7325227963525835 [2023-11-29 00:13:24,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 241 transitions. [2023-11-29 00:13:24,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 241 transitions. [2023-11-29 00:13:24,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:24,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 241 transitions. [2023-11-29 00:13:24,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:24,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:24,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:24,527 INFO L175 Difference]: Start difference. First operand has 159 places, 250 transitions, 3013 flow. Second operand 7 states and 241 transitions. [2023-11-29 00:13:24,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 309 transitions, 4360 flow [2023-11-29 00:13:24,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 309 transitions, 4320 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-29 00:13:24,707 INFO L231 Difference]: Finished difference. Result has 169 places, 261 transitions, 3397 flow [2023-11-29 00:13:24,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3397, PETRI_PLACES=169, PETRI_TRANSITIONS=261} [2023-11-29 00:13:24,708 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 119 predicate places. [2023-11-29 00:13:24,708 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 261 transitions, 3397 flow [2023-11-29 00:13:24,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:24,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:24,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:24,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:13:24,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:24,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2119877249, now seen corresponding path program 4 times [2023-11-29 00:13:24,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:24,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206867125] [2023-11-29 00:13:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:24,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:24,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206867125] [2023-11-29 00:13:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206867125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:24,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755732320] [2023-11-29 00:13:24,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:13:24,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:24,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:24,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:24,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:13:25,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:13:25,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:25,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:13:25,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:25,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755732320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:13:25,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:13:25,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 00:13:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867031372] [2023-11-29 00:13:25,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:13:25,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:13:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:13:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:13:25,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:25,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 261 transitions, 3397 flow. Second operand has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:25,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:25,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:25,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:26,660 INFO L124 PetriNetUnfolderBase]: 2626/4234 cut-off events. [2023-11-29 00:13:26,660 INFO L125 PetriNetUnfolderBase]: For 116543/116643 co-relation queries the response was YES. [2023-11-29 00:13:26,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33500 conditions, 4234 events. 2626/4234 cut-off events. For 116543/116643 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 24081 event pairs, 461 based on Foata normal form. 48/4250 useless extension candidates. Maximal degree in co-relation 33426. Up to 1353 conditions per place. [2023-11-29 00:13:26,710 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 233 selfloop transitions, 142 changer transitions 1/385 dead transitions. [2023-11-29 00:13:26,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 385 transitions, 5735 flow [2023-11-29 00:13:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:13:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:13:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 350 transitions. [2023-11-29 00:13:26,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-11-29 00:13:26,712 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 350 transitions. [2023-11-29 00:13:26,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 350 transitions. [2023-11-29 00:13:26,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:26,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 350 transitions. [2023-11-29 00:13:26,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:26,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:26,715 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:26,715 INFO L175 Difference]: Start difference. First operand has 169 places, 261 transitions, 3397 flow. Second operand 10 states and 350 transitions. [2023-11-29 00:13:26,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 385 transitions, 5735 flow [2023-11-29 00:13:27,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 385 transitions, 5531 flow, removed 102 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:27,054 INFO L231 Difference]: Finished difference. Result has 181 places, 299 transitions, 4277 flow [2023-11-29 00:13:27,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4277, PETRI_PLACES=181, PETRI_TRANSITIONS=299} [2023-11-29 00:13:27,055 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2023-11-29 00:13:27,055 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 299 transitions, 4277 flow [2023-11-29 00:13:27,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:27,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:27,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:27,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:13:27,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:13:27,256 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:27,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2050736916, now seen corresponding path program 4 times [2023-11-29 00:13:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51500227] [2023-11-29 00:13:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51500227] [2023-11-29 00:13:27,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51500227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:27,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076202966] [2023-11-29 00:13:27,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:13:27,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:27,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:27,400 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:27,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:13:27,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:13:27,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:27,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:13:27,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:27,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076202966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:13:27,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:13:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-29 00:13:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021528132] [2023-11-29 00:13:27,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:13:27,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:13:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:13:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:13:27,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:27,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 299 transitions, 4277 flow. Second operand has 15 states, 15 states have (on average 27.533333333333335) internal successors, (413), 15 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:27,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:27,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:27,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:29,551 INFO L124 PetriNetUnfolderBase]: 2905/4720 cut-off events. [2023-11-29 00:13:29,551 INFO L125 PetriNetUnfolderBase]: For 127240/127295 co-relation queries the response was YES. [2023-11-29 00:13:29,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37465 conditions, 4720 events. 2905/4720 cut-off events. For 127240/127295 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27690 event pairs, 535 based on Foata normal form. 43/4734 useless extension candidates. Maximal degree in co-relation 37386. Up to 1397 conditions per place. [2023-11-29 00:13:29,646 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 315 selfloop transitions, 165 changer transitions 0/489 dead transitions. [2023-11-29 00:13:29,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 489 transitions, 7721 flow [2023-11-29 00:13:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:13:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:13:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 688 transitions. [2023-11-29 00:13:29,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6970618034447822 [2023-11-29 00:13:29,649 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 688 transitions. [2023-11-29 00:13:29,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 688 transitions. [2023-11-29 00:13:29,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:29,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 688 transitions. [2023-11-29 00:13:29,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.76190476190476) internal successors, (688), 21 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:29,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:29,654 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:29,655 INFO L175 Difference]: Start difference. First operand has 181 places, 299 transitions, 4277 flow. Second operand 21 states and 688 transitions. [2023-11-29 00:13:29,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 489 transitions, 7721 flow [2023-11-29 00:13:29,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 489 transitions, 7391 flow, removed 107 selfloop flow, removed 2 redundant places. [2023-11-29 00:13:29,950 INFO L231 Difference]: Finished difference. Result has 215 places, 367 transitions, 5792 flow [2023-11-29 00:13:29,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5792, PETRI_PLACES=215, PETRI_TRANSITIONS=367} [2023-11-29 00:13:29,951 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 165 predicate places. [2023-11-29 00:13:29,951 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 367 transitions, 5792 flow [2023-11-29 00:13:29,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.533333333333335) internal successors, (413), 15 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:29,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:29,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:29,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:13:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:13:30,152 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:30,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash 886607671, now seen corresponding path program 5 times [2023-11-29 00:13:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972104297] [2023-11-29 00:13:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:30,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:30,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972104297] [2023-11-29 00:13:30,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972104297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:30,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:30,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:30,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590206513] [2023-11-29 00:13:30,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:30,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:30,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:30,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:30,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 367 transitions, 5792 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:30,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:30,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:30,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:31,552 INFO L124 PetriNetUnfolderBase]: 3133/5075 cut-off events. [2023-11-29 00:13:31,552 INFO L125 PetriNetUnfolderBase]: For 228684/228751 co-relation queries the response was YES. [2023-11-29 00:13:31,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46057 conditions, 5075 events. 3133/5075 cut-off events. For 228684/228751 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 29934 event pairs, 651 based on Foata normal form. 36/5085 useless extension candidates. Maximal degree in co-relation 45962. Up to 2063 conditions per place. [2023-11-29 00:13:31,608 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 328 selfloop transitions, 153 changer transitions 2/492 dead transitions. [2023-11-29 00:13:31,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 492 transitions, 8879 flow [2023-11-29 00:13:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:13:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:13:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 341 transitions. [2023-11-29 00:13:31,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725531914893617 [2023-11-29 00:13:31,610 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 341 transitions. [2023-11-29 00:13:31,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 341 transitions. [2023-11-29 00:13:31,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:31,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 341 transitions. [2023-11-29 00:13:31,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.1) internal successors, (341), 10 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:31,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:31,680 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:31,680 INFO L175 Difference]: Start difference. First operand has 215 places, 367 transitions, 5792 flow. Second operand 10 states and 341 transitions. [2023-11-29 00:13:31,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 492 transitions, 8879 flow [2023-11-29 00:13:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 492 transitions, 8396 flow, removed 198 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:32,440 INFO L231 Difference]: Finished difference. Result has 230 places, 423 transitions, 7131 flow [2023-11-29 00:13:32,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5402, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7131, PETRI_PLACES=230, PETRI_TRANSITIONS=423} [2023-11-29 00:13:32,441 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 180 predicate places. [2023-11-29 00:13:32,441 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 423 transitions, 7131 flow [2023-11-29 00:13:32,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:32,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:32,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:32,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:13:32,442 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:32,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash 735234607, now seen corresponding path program 6 times [2023-11-29 00:13:32,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:32,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885947902] [2023-11-29 00:13:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885947902] [2023-11-29 00:13:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885947902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729182231] [2023-11-29 00:13:32,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:13:32,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:32,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:32,625 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:32,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:13:32,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:13:32,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:32,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:13:32,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:32,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729182231] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:13:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 16 [2023-11-29 00:13:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793579809] [2023-11-29 00:13:33,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:33,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:13:33,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:33,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 423 transitions, 7131 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:33,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:33,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:33,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:34,656 INFO L124 PetriNetUnfolderBase]: 3515/5746 cut-off events. [2023-11-29 00:13:34,656 INFO L125 PetriNetUnfolderBase]: For 304646/304685 co-relation queries the response was YES. [2023-11-29 00:13:34,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54115 conditions, 5746 events. 3515/5746 cut-off events. For 304646/304685 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 35059 event pairs, 670 based on Foata normal form. 17/5744 useless extension candidates. Maximal degree in co-relation 54013. Up to 2839 conditions per place. [2023-11-29 00:13:34,729 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 375 selfloop transitions, 162 changer transitions 0/546 dead transitions. [2023-11-29 00:13:34,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 546 transitions, 10099 flow [2023-11-29 00:13:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:13:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:13:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2023-11-29 00:13:34,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7186761229314421 [2023-11-29 00:13:34,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 304 transitions. [2023-11-29 00:13:34,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 304 transitions. [2023-11-29 00:13:34,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:34,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 304 transitions. [2023-11-29 00:13:34,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.77777777777778) internal successors, (304), 9 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:34,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:34,733 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:34,733 INFO L175 Difference]: Start difference. First operand has 230 places, 423 transitions, 7131 flow. Second operand 9 states and 304 transitions. [2023-11-29 00:13:34,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 546 transitions, 10099 flow [2023-11-29 00:13:35,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 546 transitions, 9810 flow, removed 95 selfloop flow, removed 3 redundant places. [2023-11-29 00:13:35,678 INFO L231 Difference]: Finished difference. Result has 240 places, 486 transitions, 8822 flow [2023-11-29 00:13:35,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6879, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8822, PETRI_PLACES=240, PETRI_TRANSITIONS=486} [2023-11-29 00:13:35,679 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 190 predicate places. [2023-11-29 00:13:35,679 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 486 transitions, 8822 flow [2023-11-29 00:13:35,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:35,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:35,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:35,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:13:35,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:35,880 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:35,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash 273813767, now seen corresponding path program 7 times [2023-11-29 00:13:35,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672454093] [2023-11-29 00:13:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:35,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:36,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:36,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672454093] [2023-11-29 00:13:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672454093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:36,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:36,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:36,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128684907] [2023-11-29 00:13:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:36,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:36,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:36,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:36,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 486 transitions, 8822 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:36,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:36,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:36,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:37,714 INFO L124 PetriNetUnfolderBase]: 3637/5931 cut-off events. [2023-11-29 00:13:37,714 INFO L125 PetriNetUnfolderBase]: For 278979/279058 co-relation queries the response was YES. [2023-11-29 00:13:37,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56371 conditions, 5931 events. 3637/5931 cut-off events. For 278979/279058 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36391 event pairs, 498 based on Foata normal form. 54/5978 useless extension candidates. Maximal degree in co-relation 56266. Up to 2080 conditions per place. [2023-11-29 00:13:37,781 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 368 selfloop transitions, 295 changer transitions 2/674 dead transitions. [2023-11-29 00:13:37,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 674 transitions, 13721 flow [2023-11-29 00:13:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:13:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:13:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 339 transitions. [2023-11-29 00:13:37,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7212765957446808 [2023-11-29 00:13:37,782 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 339 transitions. [2023-11-29 00:13:37,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 339 transitions. [2023-11-29 00:13:37,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:37,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 339 transitions. [2023-11-29 00:13:37,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.9) internal successors, (339), 10 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:37,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:37,784 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:37,784 INFO L175 Difference]: Start difference. First operand has 240 places, 486 transitions, 8822 flow. Second operand 10 states and 339 transitions. [2023-11-29 00:13:37,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 674 transitions, 13721 flow [2023-11-29 00:13:39,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 674 transitions, 13101 flow, removed 310 selfloop flow, removed 0 redundant places. [2023-11-29 00:13:39,229 INFO L231 Difference]: Finished difference. Result has 257 places, 561 transitions, 11345 flow [2023-11-29 00:13:39,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8448, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11345, PETRI_PLACES=257, PETRI_TRANSITIONS=561} [2023-11-29 00:13:39,230 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 207 predicate places. [2023-11-29 00:13:39,230 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 561 transitions, 11345 flow [2023-11-29 00:13:39,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:39,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:39,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:39,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:13:39,230 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:39,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash -968930666, now seen corresponding path program 5 times [2023-11-29 00:13:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:39,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010692089] [2023-11-29 00:13:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:39,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:39,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010692089] [2023-11-29 00:13:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010692089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:39,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:39,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:39,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475550013] [2023-11-29 00:13:39,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:39,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:39,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:39,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 561 transitions, 11345 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:39,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:39,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:39,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:41,510 INFO L124 PetriNetUnfolderBase]: 3635/5954 cut-off events. [2023-11-29 00:13:41,510 INFO L125 PetriNetUnfolderBase]: For 178718/178821 co-relation queries the response was YES. [2023-11-29 00:13:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53168 conditions, 5954 events. 3635/5954 cut-off events. For 178718/178821 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 36713 event pairs, 569 based on Foata normal form. 39/5980 useless extension candidates. Maximal degree in co-relation 53054. Up to 2588 conditions per place. [2023-11-29 00:13:41,579 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 495 selfloop transitions, 208 changer transitions 9/721 dead transitions. [2023-11-29 00:13:41,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 721 transitions, 15476 flow [2023-11-29 00:13:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2023-11-29 00:13:41,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112462006079028 [2023-11-29 00:13:41,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2023-11-29 00:13:41,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2023-11-29 00:13:41,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:41,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2023-11-29 00:13:41,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:41,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:41,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:41,582 INFO L175 Difference]: Start difference. First operand has 257 places, 561 transitions, 11345 flow. Second operand 7 states and 234 transitions. [2023-11-29 00:13:41,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 721 transitions, 15476 flow [2023-11-29 00:13:42,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 721 transitions, 15015 flow, removed 151 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:42,672 INFO L231 Difference]: Finished difference. Result has 266 places, 579 transitions, 11886 flow [2023-11-29 00:13:42,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10897, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11886, PETRI_PLACES=266, PETRI_TRANSITIONS=579} [2023-11-29 00:13:42,672 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 216 predicate places. [2023-11-29 00:13:42,672 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 579 transitions, 11886 flow [2023-11-29 00:13:42,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:42,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:42,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:42,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:13:42,673 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:42,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1039498941, now seen corresponding path program 8 times [2023-11-29 00:13:42,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:42,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699285550] [2023-11-29 00:13:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:42,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699285550] [2023-11-29 00:13:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699285550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884506472] [2023-11-29 00:13:42,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:13:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:42,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:42,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:13:43,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:13:43,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:43,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:13:43,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:43,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884506472] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:43,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:13:43,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-11-29 00:13:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635178734] [2023-11-29 00:13:43,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:13:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:13:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:13:43,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:43,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 579 transitions, 11886 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:43,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:43,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:43,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:45,121 INFO L124 PetriNetUnfolderBase]: 3636/5944 cut-off events. [2023-11-29 00:13:45,121 INFO L125 PetriNetUnfolderBase]: For 161041/161081 co-relation queries the response was YES. [2023-11-29 00:13:45,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52200 conditions, 5944 events. 3636/5944 cut-off events. For 161041/161081 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36654 event pairs, 718 based on Foata normal form. 42/5958 useless extension candidates. Maximal degree in co-relation 52082. Up to 2981 conditions per place. [2023-11-29 00:13:45,222 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 449 selfloop transitions, 160 changer transitions 0/618 dead transitions. [2023-11-29 00:13:45,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 618 transitions, 13631 flow [2023-11-29 00:13:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:13:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:13:45,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2023-11-29 00:13:45,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7553191489361702 [2023-11-29 00:13:45,223 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 213 transitions. [2023-11-29 00:13:45,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 213 transitions. [2023-11-29 00:13:45,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:45,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 213 transitions. [2023-11-29 00:13:45,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:45,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:45,225 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:45,225 INFO L175 Difference]: Start difference. First operand has 266 places, 579 transitions, 11886 flow. Second operand 6 states and 213 transitions. [2023-11-29 00:13:45,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 618 transitions, 13631 flow [2023-11-29 00:13:46,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 618 transitions, 13215 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-29 00:13:46,154 INFO L231 Difference]: Finished difference. Result has 267 places, 581 transitions, 12025 flow [2023-11-29 00:13:46,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11406, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12025, PETRI_PLACES=267, PETRI_TRANSITIONS=581} [2023-11-29 00:13:46,155 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 217 predicate places. [2023-11-29 00:13:46,155 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 581 transitions, 12025 flow [2023-11-29 00:13:46,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:46,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:46,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:46,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:13:46,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:13:46,357 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:46,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1503248456, now seen corresponding path program 6 times [2023-11-29 00:13:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:46,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109277171] [2023-11-29 00:13:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:46,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109277171] [2023-11-29 00:13:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109277171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:46,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372309705] [2023-11-29 00:13:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:46,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:46,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:46,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:46,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 581 transitions, 12025 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:46,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:46,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:46,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:48,443 INFO L124 PetriNetUnfolderBase]: 3635/5985 cut-off events. [2023-11-29 00:13:48,443 INFO L125 PetriNetUnfolderBase]: For 159502/159586 co-relation queries the response was YES. [2023-11-29 00:13:48,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52385 conditions, 5985 events. 3635/5985 cut-off events. For 159502/159586 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 37358 event pairs, 916 based on Foata normal form. 3/5954 useless extension candidates. Maximal degree in co-relation 52266. Up to 3708 conditions per place. [2023-11-29 00:13:48,511 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 455 selfloop transitions, 153 changer transitions 3/620 dead transitions. [2023-11-29 00:13:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 620 transitions, 13667 flow [2023-11-29 00:13:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2023-11-29 00:13:48,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264437689969605 [2023-11-29 00:13:48,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 239 transitions. [2023-11-29 00:13:48,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 239 transitions. [2023-11-29 00:13:48,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:48,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 239 transitions. [2023-11-29 00:13:48,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:48,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:48,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:48,513 INFO L175 Difference]: Start difference. First operand has 267 places, 581 transitions, 12025 flow. Second operand 7 states and 239 transitions. [2023-11-29 00:13:48,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 620 transitions, 13667 flow [2023-11-29 00:13:49,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 620 transitions, 13546 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-11-29 00:13:49,339 INFO L231 Difference]: Finished difference. Result has 274 places, 582 transitions, 12248 flow [2023-11-29 00:13:49,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11904, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12248, PETRI_PLACES=274, PETRI_TRANSITIONS=582} [2023-11-29 00:13:49,340 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 224 predicate places. [2023-11-29 00:13:49,340 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 582 transitions, 12248 flow [2023-11-29 00:13:49,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:49,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:49,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:49,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:13:49,341 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:49,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 395174198, now seen corresponding path program 7 times [2023-11-29 00:13:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424066413] [2023-11-29 00:13:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424066413] [2023-11-29 00:13:49,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424066413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:49,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:49,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:49,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285892619] [2023-11-29 00:13:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:49,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:49,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 582 transitions, 12248 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:49,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:49,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:49,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:51,607 INFO L124 PetriNetUnfolderBase]: 3634/6051 cut-off events. [2023-11-29 00:13:51,607 INFO L125 PetriNetUnfolderBase]: For 162729/162827 co-relation queries the response was YES. [2023-11-29 00:13:51,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53065 conditions, 6051 events. 3634/6051 cut-off events. For 162729/162827 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 38508 event pairs, 889 based on Foata normal form. 28/6049 useless extension candidates. Maximal degree in co-relation 52944. Up to 3708 conditions per place. [2023-11-29 00:13:51,680 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 445 selfloop transitions, 168 changer transitions 6/628 dead transitions. [2023-11-29 00:13:51,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 628 transitions, 14039 flow [2023-11-29 00:13:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2023-11-29 00:13:51,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7355623100303952 [2023-11-29 00:13:51,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 242 transitions. [2023-11-29 00:13:51,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 242 transitions. [2023-11-29 00:13:51,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:51,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 242 transitions. [2023-11-29 00:13:51,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:51,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:51,684 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:51,684 INFO L175 Difference]: Start difference. First operand has 274 places, 582 transitions, 12248 flow. Second operand 7 states and 242 transitions. [2023-11-29 00:13:51,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 628 transitions, 14039 flow [2023-11-29 00:13:52,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 628 transitions, 13727 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 00:13:52,514 INFO L231 Difference]: Finished difference. Result has 277 places, 580 transitions, 12260 flow [2023-11-29 00:13:52,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11937, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12260, PETRI_PLACES=277, PETRI_TRANSITIONS=580} [2023-11-29 00:13:52,515 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 227 predicate places. [2023-11-29 00:13:52,515 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 580 transitions, 12260 flow [2023-11-29 00:13:52,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:52,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:52,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:52,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:13:52,516 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:52,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1373269215, now seen corresponding path program 9 times [2023-11-29 00:13:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001730807] [2023-11-29 00:13:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:52,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:52,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001730807] [2023-11-29 00:13:52,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001730807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:52,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:52,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:13:52,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053259495] [2023-11-29 00:13:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:52,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:13:52,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:13:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:13:52,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:52,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 580 transitions, 12260 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:52,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:52,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:52,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:54,760 INFO L124 PetriNetUnfolderBase]: 3964/6562 cut-off events. [2023-11-29 00:13:54,760 INFO L125 PetriNetUnfolderBase]: For 177934/178001 co-relation queries the response was YES. [2023-11-29 00:13:54,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58466 conditions, 6562 events. 3964/6562 cut-off events. For 177934/178001 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 41949 event pairs, 599 based on Foata normal form. 33/6575 useless extension candidates. Maximal degree in co-relation 58344. Up to 2795 conditions per place. [2023-11-29 00:13:54,865 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 443 selfloop transitions, 250 changer transitions 0/702 dead transitions. [2023-11-29 00:13:54,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 702 transitions, 15665 flow [2023-11-29 00:13:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:13:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:13:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2023-11-29 00:13:54,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.756838905775076 [2023-11-29 00:13:54,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 249 transitions. [2023-11-29 00:13:54,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 249 transitions. [2023-11-29 00:13:54,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:54,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 249 transitions. [2023-11-29 00:13:54,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.57142857142857) internal successors, (249), 7 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:54,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:54,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:54,867 INFO L175 Difference]: Start difference. First operand has 277 places, 580 transitions, 12260 flow. Second operand 7 states and 249 transitions. [2023-11-29 00:13:54,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 702 transitions, 15665 flow [2023-11-29 00:13:55,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 702 transitions, 15391 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-29 00:13:55,963 INFO L231 Difference]: Finished difference. Result has 280 places, 597 transitions, 13078 flow [2023-11-29 00:13:55,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11986, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13078, PETRI_PLACES=280, PETRI_TRANSITIONS=597} [2023-11-29 00:13:55,964 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 230 predicate places. [2023-11-29 00:13:55,964 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 597 transitions, 13078 flow [2023-11-29 00:13:55,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:55,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:55,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:13:55,965 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:55,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 944715567, now seen corresponding path program 10 times [2023-11-29 00:13:55,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645702227] [2023-11-29 00:13:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:56,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:56,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645702227] [2023-11-29 00:13:56,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645702227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:56,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721927885] [2023-11-29 00:13:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:13:56,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:56,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:56,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:56,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:13:56,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:13:56,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:56,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:13:56,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:56,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:56,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721927885] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:56,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:13:56,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 17 [2023-11-29 00:13:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155991689] [2023-11-29 00:13:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:13:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:13:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:13:56,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:13:56,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 597 transitions, 13078 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:56,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:56,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:13:56,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:58,607 INFO L124 PetriNetUnfolderBase]: 3987/6664 cut-off events. [2023-11-29 00:13:58,607 INFO L125 PetriNetUnfolderBase]: For 191683/191722 co-relation queries the response was YES. [2023-11-29 00:13:58,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60704 conditions, 6664 events. 3987/6664 cut-off events. For 191683/191722 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 43149 event pairs, 840 based on Foata normal form. 22/6656 useless extension candidates. Maximal degree in co-relation 60581. Up to 3529 conditions per place. [2023-11-29 00:13:58,690 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 468 selfloop transitions, 162 changer transitions 0/639 dead transitions. [2023-11-29 00:13:58,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 639 transitions, 14919 flow [2023-11-29 00:13:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:13:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:13:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2023-11-29 00:13:58,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75177304964539 [2023-11-29 00:13:58,692 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 212 transitions. [2023-11-29 00:13:58,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 212 transitions. [2023-11-29 00:13:58,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:58,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 212 transitions. [2023-11-29 00:13:58,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:58,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:58,693 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:58,693 INFO L175 Difference]: Start difference. First operand has 280 places, 597 transitions, 13078 flow. Second operand 6 states and 212 transitions. [2023-11-29 00:13:58,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 639 transitions, 14919 flow [2023-11-29 00:13:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 639 transitions, 14686 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-29 00:13:59,691 INFO L231 Difference]: Finished difference. Result has 283 places, 601 transitions, 13308 flow [2023-11-29 00:13:59,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12853, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13308, PETRI_PLACES=283, PETRI_TRANSITIONS=601} [2023-11-29 00:13:59,692 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 233 predicate places. [2023-11-29 00:13:59,692 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 601 transitions, 13308 flow [2023-11-29 00:13:59,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:13:59,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:59,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:59,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:13:59,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:13:59,893 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:13:59,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash -407077785, now seen corresponding path program 11 times [2023-11-29 00:13:59,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:59,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465991977] [2023-11-29 00:13:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:00,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:00,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465991977] [2023-11-29 00:14:00,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465991977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:00,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:00,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302901640] [2023-11-29 00:14:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:00,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:00,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:00,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 601 transitions, 13308 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:00,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:00,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:00,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:02,113 INFO L124 PetriNetUnfolderBase]: 3967/6631 cut-off events. [2023-11-29 00:14:02,114 INFO L125 PetriNetUnfolderBase]: For 193834/193897 co-relation queries the response was YES. [2023-11-29 00:14:02,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60568 conditions, 6631 events. 3967/6631 cut-off events. For 193834/193897 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 43002 event pairs, 845 based on Foata normal form. 27/6635 useless extension candidates. Maximal degree in co-relation 60445. Up to 3333 conditions per place. [2023-11-29 00:14:02,213 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 398 selfloop transitions, 265 changer transitions 0/672 dead transitions. [2023-11-29 00:14:02,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 672 transitions, 15729 flow [2023-11-29 00:14:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:14:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2023-11-29 00:14:02,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7507598784194529 [2023-11-29 00:14:02,214 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 247 transitions. [2023-11-29 00:14:02,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 247 transitions. [2023-11-29 00:14:02,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:02,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 247 transitions. [2023-11-29 00:14:02,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:02,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:02,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:02,216 INFO L175 Difference]: Start difference. First operand has 283 places, 601 transitions, 13308 flow. Second operand 7 states and 247 transitions. [2023-11-29 00:14:02,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 672 transitions, 15729 flow [2023-11-29 00:14:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 672 transitions, 15399 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:03,333 INFO L231 Difference]: Finished difference. Result has 289 places, 611 transitions, 14006 flow [2023-11-29 00:14:03,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12996, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14006, PETRI_PLACES=289, PETRI_TRANSITIONS=611} [2023-11-29 00:14:03,334 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 239 predicate places. [2023-11-29 00:14:03,334 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 611 transitions, 14006 flow [2023-11-29 00:14:03,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:03,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:03,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:03,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 00:14:03,335 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:03,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash 344953911, now seen corresponding path program 12 times [2023-11-29 00:14:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:03,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768453894] [2023-11-29 00:14:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768453894] [2023-11-29 00:14:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768453894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178409850] [2023-11-29 00:14:03,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:14:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:03,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:03,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:03,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:14:03,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:14:03,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:03,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:14:03,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:03,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178409850] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-11-29 00:14:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646596028] [2023-11-29 00:14:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:03,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:14:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:14:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:14:03,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:03,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 611 transitions, 14006 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:03,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:03,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:03,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:05,971 INFO L124 PetriNetUnfolderBase]: 3933/6555 cut-off events. [2023-11-29 00:14:05,971 INFO L125 PetriNetUnfolderBase]: For 197249/197303 co-relation queries the response was YES. [2023-11-29 00:14:06,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61140 conditions, 6555 events. 3933/6555 cut-off events. For 197249/197303 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 42175 event pairs, 786 based on Foata normal form. 42/6577 useless extension candidates. Maximal degree in co-relation 61014. Up to 3304 conditions per place. [2023-11-29 00:14:06,054 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 454 selfloop transitions, 194 changer transitions 0/657 dead transitions. [2023-11-29 00:14:06,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 657 transitions, 15875 flow [2023-11-29 00:14:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:14:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:14:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2023-11-29 00:14:06,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75177304964539 [2023-11-29 00:14:06,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 212 transitions. [2023-11-29 00:14:06,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 212 transitions. [2023-11-29 00:14:06,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:06,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 212 transitions. [2023-11-29 00:14:06,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:06,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:06,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:06,057 INFO L175 Difference]: Start difference. First operand has 289 places, 611 transitions, 14006 flow. Second operand 6 states and 212 transitions. [2023-11-29 00:14:06,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 657 transitions, 15875 flow [2023-11-29 00:14:07,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 657 transitions, 15328 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-29 00:14:07,143 INFO L231 Difference]: Finished difference. Result has 287 places, 605 transitions, 13760 flow [2023-11-29 00:14:07,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13372, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13760, PETRI_PLACES=287, PETRI_TRANSITIONS=605} [2023-11-29 00:14:07,144 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 237 predicate places. [2023-11-29 00:14:07,144 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 605 transitions, 13760 flow [2023-11-29 00:14:07,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:07,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:07,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:07,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:14:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:14:07,345 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:07,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash -793804163, now seen corresponding path program 13 times [2023-11-29 00:14:07,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:07,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789027427] [2023-11-29 00:14:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:07,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789027427] [2023-11-29 00:14:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789027427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:07,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:07,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207772504] [2023-11-29 00:14:07,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:07,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:07,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:07,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 605 transitions, 13760 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:07,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:07,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:07,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:09,921 INFO L124 PetriNetUnfolderBase]: 4399/7388 cut-off events. [2023-11-29 00:14:09,921 INFO L125 PetriNetUnfolderBase]: For 219823/219946 co-relation queries the response was YES. [2023-11-29 00:14:09,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68271 conditions, 7388 events. 4399/7388 cut-off events. For 219823/219946 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 49318 event pairs, 1070 based on Foata normal form. 32/7377 useless extension candidates. Maximal degree in co-relation 68146. Up to 3747 conditions per place. [2023-11-29 00:14:10,018 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 382 selfloop transitions, 331 changer transitions 0/722 dead transitions. [2023-11-29 00:14:10,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 722 transitions, 17247 flow [2023-11-29 00:14:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:14:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:14:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 350 transitions. [2023-11-29 00:14:10,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-11-29 00:14:10,019 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 350 transitions. [2023-11-29 00:14:10,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 350 transitions. [2023-11-29 00:14:10,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:10,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 350 transitions. [2023-11-29 00:14:10,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:10,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:10,021 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:10,021 INFO L175 Difference]: Start difference. First operand has 287 places, 605 transitions, 13760 flow. Second operand 10 states and 350 transitions. [2023-11-29 00:14:10,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 722 transitions, 17247 flow [2023-11-29 00:14:11,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 722 transitions, 16819 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:11,288 INFO L231 Difference]: Finished difference. Result has 298 places, 642 transitions, 15471 flow [2023-11-29 00:14:11,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13390, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15471, PETRI_PLACES=298, PETRI_TRANSITIONS=642} [2023-11-29 00:14:11,289 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 248 predicate places. [2023-11-29 00:14:11,289 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 642 transitions, 15471 flow [2023-11-29 00:14:11,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:11,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:11,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:11,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 00:14:11,290 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:11,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1734560873, now seen corresponding path program 14 times [2023-11-29 00:14:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:11,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553162131] [2023-11-29 00:14:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553162131] [2023-11-29 00:14:11,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553162131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:11,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:11,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172313511] [2023-11-29 00:14:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:11,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:11,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:11,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:11,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:11,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 642 transitions, 15471 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:11,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:11,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:11,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:14,058 INFO L124 PetriNetUnfolderBase]: 4416/7406 cut-off events. [2023-11-29 00:14:14,058 INFO L125 PetriNetUnfolderBase]: For 236620/236758 co-relation queries the response was YES. [2023-11-29 00:14:14,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70271 conditions, 7406 events. 4416/7406 cut-off events. For 236620/236758 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 49464 event pairs, 1495 based on Foata normal form. 2/7354 useless extension candidates. Maximal degree in co-relation 70142. Up to 6073 conditions per place. [2023-11-29 00:14:14,148 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 498 selfloop transitions, 162 changer transitions 2/671 dead transitions. [2023-11-29 00:14:14,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 671 transitions, 17169 flow [2023-11-29 00:14:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:14:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2023-11-29 00:14:14,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7051671732522796 [2023-11-29 00:14:14,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 232 transitions. [2023-11-29 00:14:14,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 232 transitions. [2023-11-29 00:14:14,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:14,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 232 transitions. [2023-11-29 00:14:14,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:14,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:14,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:14,151 INFO L175 Difference]: Start difference. First operand has 298 places, 642 transitions, 15471 flow. Second operand 7 states and 232 transitions. [2023-11-29 00:14:14,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 671 transitions, 17169 flow [2023-11-29 00:14:15,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 671 transitions, 16900 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:15,404 INFO L231 Difference]: Finished difference. Result has 304 places, 652 transitions, 15790 flow [2023-11-29 00:14:15,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=15214, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15790, PETRI_PLACES=304, PETRI_TRANSITIONS=652} [2023-11-29 00:14:15,405 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 254 predicate places. [2023-11-29 00:14:15,405 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 652 transitions, 15790 flow [2023-11-29 00:14:15,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:15,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:15,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:15,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 00:14:15,405 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:15,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1906189971, now seen corresponding path program 15 times [2023-11-29 00:14:15,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:15,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376912534] [2023-11-29 00:14:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:15,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:15,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376912534] [2023-11-29 00:14:15,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376912534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790841790] [2023-11-29 00:14:15,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:14:15,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:15,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:15,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:15,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:14:15,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:14:15,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:15,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:14:15,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:15,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790841790] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:15,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:15,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-11-29 00:14:15,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377790038] [2023-11-29 00:14:15,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:15,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:14:15,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:15,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:14:15,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:14:15,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:15,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 652 transitions, 15790 flow. Second operand has 16 states, 16 states have (on average 27.25) internal successors, (436), 16 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:15,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:15,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:15,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:19,282 INFO L124 PetriNetUnfolderBase]: 5024/8457 cut-off events. [2023-11-29 00:14:19,282 INFO L125 PetriNetUnfolderBase]: For 277888/277976 co-relation queries the response was YES. [2023-11-29 00:14:19,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80285 conditions, 8457 events. 5024/8457 cut-off events. For 277888/277976 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 58007 event pairs, 1190 based on Foata normal form. 53/8452 useless extension candidates. Maximal degree in co-relation 80152. Up to 5644 conditions per place. [2023-11-29 00:14:19,405 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 500 selfloop transitions, 376 changer transitions 0/885 dead transitions. [2023-11-29 00:14:19,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 885 transitions, 21796 flow [2023-11-29 00:14:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:14:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:14:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 703 transitions. [2023-11-29 00:14:19,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7122593718338399 [2023-11-29 00:14:19,408 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 703 transitions. [2023-11-29 00:14:19,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 703 transitions. [2023-11-29 00:14:19,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:19,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 703 transitions. [2023-11-29 00:14:19,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 33.476190476190474) internal successors, (703), 21 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:19,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:19,412 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:19,412 INFO L175 Difference]: Start difference. First operand has 304 places, 652 transitions, 15790 flow. Second operand 21 states and 703 transitions. [2023-11-29 00:14:19,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 885 transitions, 21796 flow [2023-11-29 00:14:20,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 885 transitions, 21632 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-29 00:14:20,976 INFO L231 Difference]: Finished difference. Result has 333 places, 756 transitions, 19443 flow [2023-11-29 00:14:20,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=15626, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=19443, PETRI_PLACES=333, PETRI_TRANSITIONS=756} [2023-11-29 00:14:20,977 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 283 predicate places. [2023-11-29 00:14:20,977 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 756 transitions, 19443 flow [2023-11-29 00:14:20,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.25) internal successors, (436), 16 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:20,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:20,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:20,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:14:21,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:21,178 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:21,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1849752649, now seen corresponding path program 16 times [2023-11-29 00:14:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530569348] [2023-11-29 00:14:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:21,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530569348] [2023-11-29 00:14:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530569348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:21,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117773626] [2023-11-29 00:14:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:21,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:21,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:21,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:21,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:21,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:21,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 756 transitions, 19443 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:21,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:21,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:21,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:24,278 INFO L124 PetriNetUnfolderBase]: 5023/8400 cut-off events. [2023-11-29 00:14:24,279 INFO L125 PetriNetUnfolderBase]: For 306535/306681 co-relation queries the response was YES. [2023-11-29 00:14:24,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85623 conditions, 8400 events. 5023/8400 cut-off events. For 306535/306681 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 57003 event pairs, 1598 based on Foata normal form. 2/8343 useless extension candidates. Maximal degree in co-relation 85479. Up to 6944 conditions per place. [2023-11-29 00:14:24,389 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 591 selfloop transitions, 177 changer transitions 2/779 dead transitions. [2023-11-29 00:14:24,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 779 transitions, 21286 flow [2023-11-29 00:14:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:14:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2023-11-29 00:14:24,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6990881458966566 [2023-11-29 00:14:24,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 230 transitions. [2023-11-29 00:14:24,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 230 transitions. [2023-11-29 00:14:24,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:24,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 230 transitions. [2023-11-29 00:14:24,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:24,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:24,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:24,392 INFO L175 Difference]: Start difference. First operand has 333 places, 756 transitions, 19443 flow. Second operand 7 states and 230 transitions. [2023-11-29 00:14:24,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 779 transitions, 21286 flow [2023-11-29 00:14:26,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 779 transitions, 20324 flow, removed 323 selfloop flow, removed 4 redundant places. [2023-11-29 00:14:26,098 INFO L231 Difference]: Finished difference. Result has 337 places, 760 transitions, 18984 flow [2023-11-29 00:14:26,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=18490, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18984, PETRI_PLACES=337, PETRI_TRANSITIONS=760} [2023-11-29 00:14:26,098 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 287 predicate places. [2023-11-29 00:14:26,099 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 760 transitions, 18984 flow [2023-11-29 00:14:26,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:26,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:26,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:26,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 00:14:26,099 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:26,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -207377273, now seen corresponding path program 17 times [2023-11-29 00:14:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:26,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984539796] [2023-11-29 00:14:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:26,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:26,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:26,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984539796] [2023-11-29 00:14:26,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984539796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:26,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:26,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:26,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864012247] [2023-11-29 00:14:26,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:26,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:26,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:26,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:26,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 760 transitions, 18984 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:26,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:26,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:29,122 INFO L124 PetriNetUnfolderBase]: 5006/8360 cut-off events. [2023-11-29 00:14:29,122 INFO L125 PetriNetUnfolderBase]: For 279484/279614 co-relation queries the response was YES. [2023-11-29 00:14:29,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82476 conditions, 8360 events. 5006/8360 cut-off events. For 279484/279614 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 56551 event pairs, 1504 based on Foata normal form. 10/8318 useless extension candidates. Maximal degree in co-relation 82330. Up to 6647 conditions per place. [2023-11-29 00:14:29,236 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 595 selfloop transitions, 192 changer transitions 0/796 dead transitions. [2023-11-29 00:14:29,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 796 transitions, 20981 flow [2023-11-29 00:14:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:14:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2023-11-29 00:14:29,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7386018237082067 [2023-11-29 00:14:29,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 243 transitions. [2023-11-29 00:14:29,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 243 transitions. [2023-11-29 00:14:29,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:29,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 243 transitions. [2023-11-29 00:14:29,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:29,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:29,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:29,239 INFO L175 Difference]: Start difference. First operand has 337 places, 760 transitions, 18984 flow. Second operand 7 states and 243 transitions. [2023-11-29 00:14:29,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 796 transitions, 20981 flow [2023-11-29 00:14:30,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 796 transitions, 20674 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 00:14:31,000 INFO L231 Difference]: Finished difference. Result has 340 places, 762 transitions, 19115 flow [2023-11-29 00:14:31,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=18677, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19115, PETRI_PLACES=340, PETRI_TRANSITIONS=762} [2023-11-29 00:14:31,001 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 290 predicate places. [2023-11-29 00:14:31,001 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 762 transitions, 19115 flow [2023-11-29 00:14:31,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:31,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:31,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 00:14:31,002 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:31,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2093621317, now seen corresponding path program 18 times [2023-11-29 00:14:31,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:31,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140550702] [2023-11-29 00:14:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:31,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140550702] [2023-11-29 00:14:31,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140550702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:31,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:31,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134025095] [2023-11-29 00:14:31,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:31,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:31,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:31,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:31,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:31,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 762 transitions, 19115 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:31,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:31,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:31,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:34,193 INFO L124 PetriNetUnfolderBase]: 5012/8336 cut-off events. [2023-11-29 00:14:34,193 INFO L125 PetriNetUnfolderBase]: For 282595/282750 co-relation queries the response was YES. [2023-11-29 00:14:34,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82780 conditions, 8336 events. 5012/8336 cut-off events. For 282595/282750 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 56131 event pairs, 1591 based on Foata normal form. 2/8278 useless extension candidates. Maximal degree in co-relation 82634. Up to 6908 conditions per place. [2023-11-29 00:14:34,315 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 603 selfloop transitions, 178 changer transitions 2/792 dead transitions. [2023-11-29 00:14:34,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 792 transitions, 21127 flow [2023-11-29 00:14:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:14:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2023-11-29 00:14:34,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6960486322188449 [2023-11-29 00:14:34,316 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 229 transitions. [2023-11-29 00:14:34,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 229 transitions. [2023-11-29 00:14:34,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:34,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 229 transitions. [2023-11-29 00:14:34,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:34,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:34,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:34,317 INFO L175 Difference]: Start difference. First operand has 340 places, 762 transitions, 19115 flow. Second operand 7 states and 229 transitions. [2023-11-29 00:14:34,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 792 transitions, 21127 flow [2023-11-29 00:14:36,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 792 transitions, 20764 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 00:14:36,068 INFO L231 Difference]: Finished difference. Result has 344 places, 766 transitions, 19244 flow [2023-11-29 00:14:36,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=18763, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19244, PETRI_PLACES=344, PETRI_TRANSITIONS=766} [2023-11-29 00:14:36,069 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 294 predicate places. [2023-11-29 00:14:36,070 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 766 transitions, 19244 flow [2023-11-29 00:14:36,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:36,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:36,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:36,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 00:14:36,070 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:36,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash -791187933, now seen corresponding path program 19 times [2023-11-29 00:14:36,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:36,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857746307] [2023-11-29 00:14:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:36,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:36,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857746307] [2023-11-29 00:14:36,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857746307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:36,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637476207] [2023-11-29 00:14:36,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:14:36,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:36,305 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:36,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:14:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:36,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:14:36,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:36,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:36,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637476207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:36,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-11-29 00:14:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987532735] [2023-11-29 00:14:36,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:36,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:14:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:14:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:14:36,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:36,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 766 transitions, 19244 flow. Second operand has 14 states, 14 states have (on average 27.428571428571427) internal successors, (384), 14 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) [2023-11-29 00:14:36,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:36,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:36,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:40,417 INFO L124 PetriNetUnfolderBase]: 5262/8920 cut-off events. [2023-11-29 00:14:40,417 INFO L125 PetriNetUnfolderBase]: For 290756/290893 co-relation queries the response was YES. [2023-11-29 00:14:40,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86860 conditions, 8920 events. 5262/8920 cut-off events. For 290756/290893 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 62662 event pairs, 1352 based on Foata normal form. 42/8899 useless extension candidates. Maximal degree in co-relation 86712. Up to 6287 conditions per place. [2023-11-29 00:14:40,546 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 572 selfloop transitions, 359 changer transitions 0/940 dead transitions. [2023-11-29 00:14:40,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 940 transitions, 23820 flow [2023-11-29 00:14:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:14:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 00:14:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 625 transitions. [2023-11-29 00:14:40,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6998880179171333 [2023-11-29 00:14:40,547 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 625 transitions. [2023-11-29 00:14:40,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 625 transitions. [2023-11-29 00:14:40,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:40,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 625 transitions. [2023-11-29 00:14:40,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 32.89473684210526) internal successors, (625), 19 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:40,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 47.0) internal successors, (940), 20 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:40,550 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 47.0) internal successors, (940), 20 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:40,550 INFO L175 Difference]: Start difference. First operand has 344 places, 766 transitions, 19244 flow. Second operand 19 states and 625 transitions. [2023-11-29 00:14:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 940 transitions, 23820 flow [2023-11-29 00:14:42,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 940 transitions, 23475 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:42,421 INFO L231 Difference]: Finished difference. Result has 368 places, 829 transitions, 21192 flow [2023-11-29 00:14:42,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=18916, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=21192, PETRI_PLACES=368, PETRI_TRANSITIONS=829} [2023-11-29 00:14:42,422 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 318 predicate places. [2023-11-29 00:14:42,423 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 829 transitions, 21192 flow [2023-11-29 00:14:42,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.428571428571427) internal successors, (384), 14 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) [2023-11-29 00:14:42,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:42,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:42,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:14:42,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 00:14:42,623 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:42,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1297590521, now seen corresponding path program 20 times [2023-11-29 00:14:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:42,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060260568] [2023-11-29 00:14:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:42,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:42,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060260568] [2023-11-29 00:14:42,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060260568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210092511] [2023-11-29 00:14:42,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:14:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:42,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:42,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:42,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:14:42,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:14:42,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:42,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:14:42,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:43,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210092511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:43,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2023-11-29 00:14:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102978640] [2023-11-29 00:14:43,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:43,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:14:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:14:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:14:43,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:43,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 829 transitions, 21192 flow. Second operand has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 15 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:43,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:43,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:43,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:48,120 INFO L124 PetriNetUnfolderBase]: 6845/11734 cut-off events. [2023-11-29 00:14:48,120 INFO L125 PetriNetUnfolderBase]: For 423027/423209 co-relation queries the response was YES. [2023-11-29 00:14:48,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118016 conditions, 11734 events. 6845/11734 cut-off events. For 423027/423209 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 87073 event pairs, 866 based on Foata normal form. 79/11787 useless extension candidates. Maximal degree in co-relation 117858. Up to 3834 conditions per place. [2023-11-29 00:14:48,323 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 587 selfloop transitions, 753 changer transitions 0/1349 dead transitions. [2023-11-29 00:14:48,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1349 transitions, 35247 flow [2023-11-29 00:14:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:14:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:14:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 800 transitions. [2023-11-29 00:14:48,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2023-11-29 00:14:48,325 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 800 transitions. [2023-11-29 00:14:48,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 800 transitions. [2023-11-29 00:14:48,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:48,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 800 transitions. [2023-11-29 00:14:48,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 33.333333333333336) internal successors, (800), 24 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:48,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 47.0) internal successors, (1175), 25 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:48,328 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 47.0) internal successors, (1175), 25 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:48,328 INFO L175 Difference]: Start difference. First operand has 368 places, 829 transitions, 21192 flow. Second operand 24 states and 800 transitions. [2023-11-29 00:14:48,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1349 transitions, 35247 flow [2023-11-29 00:14:51,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1349 transitions, 34490 flow, removed 160 selfloop flow, removed 6 redundant places. [2023-11-29 00:14:51,559 INFO L231 Difference]: Finished difference. Result has 401 places, 1103 transitions, 30654 flow [2023-11-29 00:14:51,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=20593, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=30654, PETRI_PLACES=401, PETRI_TRANSITIONS=1103} [2023-11-29 00:14:51,560 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 351 predicate places. [2023-11-29 00:14:51,560 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 1103 transitions, 30654 flow [2023-11-29 00:14:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 15 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:51,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:51,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:51,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:14:51,761 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:14:51,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -277397057, now seen corresponding path program 3 times [2023-11-29 00:14:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838473780] [2023-11-29 00:14:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:51,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:51,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838473780] [2023-11-29 00:14:51,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838473780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:51,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:51,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:14:51,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151901347] [2023-11-29 00:14:51,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:51,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:51,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:51,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:51,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:51,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:14:51,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 1103 transitions, 30654 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:51,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:51,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:14:51,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:57,293 INFO L124 PetriNetUnfolderBase]: 6850/11730 cut-off events. [2023-11-29 00:14:57,293 INFO L125 PetriNetUnfolderBase]: For 494096/494286 co-relation queries the response was YES. [2023-11-29 00:14:57,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126799 conditions, 11730 events. 6850/11730 cut-off events. For 494096/494286 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 87256 event pairs, 1868 based on Foata normal form. 26/11691 useless extension candidates. Maximal degree in co-relation 126625. Up to 9624 conditions per place. [2023-11-29 00:14:57,509 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 951 selfloop transitions, 177 changer transitions 9/1146 dead transitions. [2023-11-29 00:14:57,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1146 transitions, 33450 flow [2023-11-29 00:14:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:14:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2023-11-29 00:14:57,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7325227963525835 [2023-11-29 00:14:57,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 241 transitions. [2023-11-29 00:14:57,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 241 transitions. [2023-11-29 00:14:57,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:57,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 241 transitions. [2023-11-29 00:14:57,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:57,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:57,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:14:57,512 INFO L175 Difference]: Start difference. First operand has 401 places, 1103 transitions, 30654 flow. Second operand 7 states and 241 transitions. [2023-11-29 00:14:57,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1146 transitions, 33450 flow [2023-11-29 00:15:02,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 1146 transitions, 32411 flow, removed 385 selfloop flow, removed 4 redundant places. [2023-11-29 00:15:02,242 INFO L231 Difference]: Finished difference. Result has 406 places, 1105 transitions, 30074 flow [2023-11-29 00:15:02,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=29631, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30074, PETRI_PLACES=406, PETRI_TRANSITIONS=1105} [2023-11-29 00:15:02,243 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 356 predicate places. [2023-11-29 00:15:02,243 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 1105 transitions, 30074 flow [2023-11-29 00:15:02,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:02,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:02,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:02,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 00:15:02,243 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:15:02,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash -413775602, now seen corresponding path program 8 times [2023-11-29 00:15:02,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:02,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929159173] [2023-11-29 00:15:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:02,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929159173] [2023-11-29 00:15:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929159173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591248025] [2023-11-29 00:15:02,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:15:02,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:02,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:02,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:02,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:15:02,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:15:02,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:02,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:15:02,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:02,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:02,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591248025] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:02,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:02,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 00:15:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973456514] [2023-11-29 00:15:02,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:02,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:15:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:15:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:15:02,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:15:02,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 1105 transitions, 30074 flow. Second operand has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:02,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:02,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:15:02,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:08,542 INFO L124 PetriNetUnfolderBase]: 7019/12019 cut-off events. [2023-11-29 00:15:08,542 INFO L125 PetriNetUnfolderBase]: For 451835/452028 co-relation queries the response was YES. [2023-11-29 00:15:08,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124969 conditions, 12019 events. 7019/12019 cut-off events. For 451835/452028 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 89986 event pairs, 1531 based on Foata normal form. 20/11978 useless extension candidates. Maximal degree in co-relation 124793. Up to 6446 conditions per place. [2023-11-29 00:15:08,731 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 717 selfloop transitions, 474 changer transitions 0/1200 dead transitions. [2023-11-29 00:15:08,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1200 transitions, 33869 flow [2023-11-29 00:15:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:15:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:15:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 383 transitions. [2023-11-29 00:15:08,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7408123791102514 [2023-11-29 00:15:08,733 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 383 transitions. [2023-11-29 00:15:08,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 383 transitions. [2023-11-29 00:15:08,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:08,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 383 transitions. [2023-11-29 00:15:08,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 34.81818181818182) internal successors, (383), 11 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:08,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 47.0) internal successors, (564), 12 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:08,734 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 47.0) internal successors, (564), 12 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:08,734 INFO L175 Difference]: Start difference. First operand has 406 places, 1105 transitions, 30074 flow. Second operand 11 states and 383 transitions. [2023-11-29 00:15:08,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1200 transitions, 33869 flow [2023-11-29 00:15:12,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 1200 transitions, 33487 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-29 00:15:12,687 INFO L231 Difference]: Finished difference. Result has 414 places, 1112 transitions, 31266 flow [2023-11-29 00:15:12,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=29707, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=31266, PETRI_PLACES=414, PETRI_TRANSITIONS=1112} [2023-11-29 00:15:12,688 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 364 predicate places. [2023-11-29 00:15:12,688 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 1112 transitions, 31266 flow [2023-11-29 00:15:12,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:12,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:12,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:12,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:15:12,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 00:15:12,889 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:15:12,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2033422143, now seen corresponding path program 4 times [2023-11-29 00:15:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:12,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367949639] [2023-11-29 00:15:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:12,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367949639] [2023-11-29 00:15:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367949639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:13,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:15:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65171032] [2023-11-29 00:15:13,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:13,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:13,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:15:13,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 1112 transitions, 31266 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:15:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:18,251 INFO L124 PetriNetUnfolderBase]: 6993/11994 cut-off events. [2023-11-29 00:15:18,252 INFO L125 PetriNetUnfolderBase]: For 471429/471633 co-relation queries the response was YES. [2023-11-29 00:15:18,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127052 conditions, 11994 events. 6993/11994 cut-off events. For 471429/471633 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 90012 event pairs, 1972 based on Foata normal form. 20/11947 useless extension candidates. Maximal degree in co-relation 126875. Up to 9935 conditions per place. [2023-11-29 00:15:18,455 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 955 selfloop transitions, 166 changer transitions 14/1144 dead transitions. [2023-11-29 00:15:18,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 1144 transitions, 33740 flow [2023-11-29 00:15:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:15:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:15:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2023-11-29 00:15:18,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.729483282674772 [2023-11-29 00:15:18,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 240 transitions. [2023-11-29 00:15:18,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 240 transitions. [2023-11-29 00:15:18,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:18,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 240 transitions. [2023-11-29 00:15:18,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:18,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:18,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:18,457 INFO L175 Difference]: Start difference. First operand has 414 places, 1112 transitions, 31266 flow. Second operand 7 states and 240 transitions. [2023-11-29 00:15:18,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 1144 transitions, 33740 flow [2023-11-29 00:15:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1144 transitions, 33124 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-29 00:15:22,553 INFO L231 Difference]: Finished difference. Result has 415 places, 1104 transitions, 30738 flow [2023-11-29 00:15:22,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30579, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30738, PETRI_PLACES=415, PETRI_TRANSITIONS=1104} [2023-11-29 00:15:22,555 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 365 predicate places. [2023-11-29 00:15:22,555 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 1104 transitions, 30738 flow [2023-11-29 00:15:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:22,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:22,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 00:15:22,555 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:15:22,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1863001363, now seen corresponding path program 5 times [2023-11-29 00:15:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899640853] [2023-11-29 00:15:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:22,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:22,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899640853] [2023-11-29 00:15:22,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899640853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:22,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838623006] [2023-11-29 00:15:22,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:15:22,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:22,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:22,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:15:22,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:15:22,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:22,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:15:22,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:22,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838623006] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:22,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 00:15:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852548919] [2023-11-29 00:15:22,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:22,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:15:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:15:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:15:22,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:15:22,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1104 transitions, 30738 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:22,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:22,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:15:22,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:28,121 INFO L124 PetriNetUnfolderBase]: 6973/11911 cut-off events. [2023-11-29 00:15:28,121 INFO L125 PetriNetUnfolderBase]: For 464712/464901 co-relation queries the response was YES. [2023-11-29 00:15:28,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125757 conditions, 11911 events. 6973/11911 cut-off events. For 464712/464901 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 88788 event pairs, 1956 based on Foata normal form. 12/11856 useless extension candidates. Maximal degree in co-relation 125578. Up to 9869 conditions per place. [2023-11-29 00:15:28,317 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 950 selfloop transitions, 178 changer transitions 0/1137 dead transitions. [2023-11-29 00:15:28,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 1137 transitions, 33382 flow [2023-11-29 00:15:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:15:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:15:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2023-11-29 00:15:28,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7203647416413373 [2023-11-29 00:15:28,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2023-11-29 00:15:28,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2023-11-29 00:15:28,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:28,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2023-11-29 00:15:28,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:28,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:28,319 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:28,319 INFO L175 Difference]: Start difference. First operand has 415 places, 1104 transitions, 30738 flow. Second operand 7 states and 237 transitions. [2023-11-29 00:15:28,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 1137 transitions, 33382 flow [2023-11-29 00:15:32,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1137 transitions, 33041 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 00:15:32,202 INFO L231 Difference]: Finished difference. Result has 418 places, 1110 transitions, 30938 flow [2023-11-29 00:15:32,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30397, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30938, PETRI_PLACES=418, PETRI_TRANSITIONS=1110} [2023-11-29 00:15:32,203 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 368 predicate places. [2023-11-29 00:15:32,203 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 1110 transitions, 30938 flow [2023-11-29 00:15:32,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:32,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:32,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:32,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:15:32,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 00:15:32,404 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:15:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1666421402, now seen corresponding path program 9 times [2023-11-29 00:15:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:32,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723857077] [2023-11-29 00:15:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:32,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:32,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723857077] [2023-11-29 00:15:32,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723857077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:15:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988598241] [2023-11-29 00:15:32,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:15:32,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:32,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:32,514 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:32,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:15:32,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:15:32,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:32,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:15:32,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:32,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988598241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:32,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:15:32,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 00:15:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404922531] [2023-11-29 00:15:32,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:32,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:15:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:15:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:15:32,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:15:32,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 1110 transitions, 30938 flow. Second operand has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:32,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:32,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:15:32,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:38,270 INFO L124 PetriNetUnfolderBase]: 6995/11952 cut-off events. [2023-11-29 00:15:38,270 INFO L125 PetriNetUnfolderBase]: For 470680/470882 co-relation queries the response was YES. [2023-11-29 00:15:38,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126345 conditions, 11952 events. 6995/11952 cut-off events. For 470680/470882 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 89114 event pairs, 1960 based on Foata normal form. 14/11899 useless extension candidates. Maximal degree in co-relation 126164. Up to 9953 conditions per place. [2023-11-29 00:15:38,628 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 946 selfloop transitions, 187 changer transitions 0/1142 dead transitions. [2023-11-29 00:15:38,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 1142 transitions, 33630 flow [2023-11-29 00:15:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:15:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:15:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2023-11-29 00:15:38,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7355623100303952 [2023-11-29 00:15:38,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 242 transitions. [2023-11-29 00:15:38,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 242 transitions. [2023-11-29 00:15:38,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:38,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 242 transitions. [2023-11-29 00:15:38,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:38,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:38,631 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:38,631 INFO L175 Difference]: Start difference. First operand has 418 places, 1110 transitions, 30938 flow. Second operand 7 states and 242 transitions. [2023-11-29 00:15:38,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 1142 transitions, 33630 flow [2023-11-29 00:15:42,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1142 transitions, 33264 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-29 00:15:42,774 INFO L231 Difference]: Finished difference. Result has 421 places, 1112 transitions, 31012 flow [2023-11-29 00:15:42,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30572, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31012, PETRI_PLACES=421, PETRI_TRANSITIONS=1112} [2023-11-29 00:15:42,775 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 371 predicate places. [2023-11-29 00:15:42,775 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 1112 transitions, 31012 flow [2023-11-29 00:15:42,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:42,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:42,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:42,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:15:42,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:42,976 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:15:42,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1809739553, now seen corresponding path program 21 times [2023-11-29 00:15:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158348802] [2023-11-29 00:15:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:43,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158348802] [2023-11-29 00:15:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158348802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:43,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:15:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042863310] [2023-11-29 00:15:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:43,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:43,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:43,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:15:43,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 1112 transitions, 31012 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:43,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:43,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:15:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:48,571 INFO L124 PetriNetUnfolderBase]: 7001/11978 cut-off events. [2023-11-29 00:15:48,571 INFO L125 PetriNetUnfolderBase]: For 471578/471786 co-relation queries the response was YES. [2023-11-29 00:15:48,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126578 conditions, 11978 events. 7001/11978 cut-off events. For 471578/471786 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 89538 event pairs, 1988 based on Foata normal form. 2/11912 useless extension candidates. Maximal degree in co-relation 126396. Up to 9989 conditions per place. [2023-11-29 00:15:48,827 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 950 selfloop transitions, 172 changer transitions 2/1133 dead transitions. [2023-11-29 00:15:48,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 1133 transitions, 33509 flow [2023-11-29 00:15:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:15:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:15:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2023-11-29 00:15:48,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7051671732522796 [2023-11-29 00:15:48,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 232 transitions. [2023-11-29 00:15:48,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 232 transitions. [2023-11-29 00:15:48,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:48,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 232 transitions. [2023-11-29 00:15:48,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:48,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:48,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:48,829 INFO L175 Difference]: Start difference. First operand has 421 places, 1112 transitions, 31012 flow. Second operand 7 states and 232 transitions. [2023-11-29 00:15:48,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 1133 transitions, 33509 flow [2023-11-29 00:15:53,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 1133 transitions, 33129 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-29 00:15:53,090 INFO L231 Difference]: Finished difference. Result has 422 places, 1115 transitions, 31073 flow [2023-11-29 00:15:53,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30640, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=943, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31073, PETRI_PLACES=422, PETRI_TRANSITIONS=1115} [2023-11-29 00:15:53,091 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 372 predicate places. [2023-11-29 00:15:53,092 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 1115 transitions, 31073 flow [2023-11-29 00:15:53,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:53,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:53,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:53,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 00:15:53,092 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:15:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash -433452742, now seen corresponding path program 10 times [2023-11-29 00:15:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244803527] [2023-11-29 00:15:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244803527] [2023-11-29 00:15:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244803527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:15:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790143870] [2023-11-29 00:15:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:53,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:15:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1115 transitions, 31073 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:15:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:58,797 INFO L124 PetriNetUnfolderBase]: 7007/11977 cut-off events. [2023-11-29 00:15:58,797 INFO L125 PetriNetUnfolderBase]: For 468654/468856 co-relation queries the response was YES. [2023-11-29 00:15:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126624 conditions, 11977 events. 7007/11977 cut-off events. For 468654/468856 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 89430 event pairs, 1986 based on Foata normal form. 3/11912 useless extension candidates. Maximal degree in co-relation 126442. Up to 9993 conditions per place. [2023-11-29 00:15:59,029 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 951 selfloop transitions, 174 changer transitions 3/1137 dead transitions. [2023-11-29 00:15:59,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 1137 transitions, 33553 flow [2023-11-29 00:15:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:15:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:15:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2023-11-29 00:15:59,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7082066869300911 [2023-11-29 00:15:59,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2023-11-29 00:15:59,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2023-11-29 00:15:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:59,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2023-11-29 00:15:59,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:59,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:59,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:15:59,031 INFO L175 Difference]: Start difference. First operand has 422 places, 1115 transitions, 31073 flow. Second operand 7 states and 233 transitions. [2023-11-29 00:15:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 1137 transitions, 33553 flow [2023-11-29 00:16:03,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1137 transitions, 33214 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 00:16:03,071 INFO L231 Difference]: Finished difference. Result has 426 places, 1117 transitions, 31157 flow [2023-11-29 00:16:03,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30734, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=941, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31157, PETRI_PLACES=426, PETRI_TRANSITIONS=1117} [2023-11-29 00:16:03,073 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 376 predicate places. [2023-11-29 00:16:03,073 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1117 transitions, 31157 flow [2023-11-29 00:16:03,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:03,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:16:03,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:03,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 00:16:03,073 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:16:03,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash -973699956, now seen corresponding path program 11 times [2023-11-29 00:16:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571664801] [2023-11-29 00:16:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:03,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571664801] [2023-11-29 00:16:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571664801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:16:03,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:16:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:16:03,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875302850] [2023-11-29 00:16:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:16:03,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:16:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:16:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:16:03,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:16:03,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1117 transitions, 31157 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:03,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:16:03,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:16:03,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:16:09,042 INFO L124 PetriNetUnfolderBase]: 7004/11995 cut-off events. [2023-11-29 00:16:09,042 INFO L125 PetriNetUnfolderBase]: For 473152/473362 co-relation queries the response was YES. [2023-11-29 00:16:09,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126656 conditions, 11995 events. 7004/11995 cut-off events. For 473152/473362 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 89730 event pairs, 1976 based on Foata normal form. 3/11931 useless extension candidates. Maximal degree in co-relation 126472. Up to 9995 conditions per place. [2023-11-29 00:16:09,285 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 952 selfloop transitions, 171 changer transitions 3/1135 dead transitions. [2023-11-29 00:16:09,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1135 transitions, 33543 flow [2023-11-29 00:16:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:16:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:16:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2023-11-29 00:16:09,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7051671732522796 [2023-11-29 00:16:09,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 232 transitions. [2023-11-29 00:16:09,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 232 transitions. [2023-11-29 00:16:09,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:16:09,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 232 transitions. [2023-11-29 00:16:09,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:09,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:09,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:09,288 INFO L175 Difference]: Start difference. First operand has 426 places, 1117 transitions, 31157 flow. Second operand 7 states and 232 transitions. [2023-11-29 00:16:09,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1135 transitions, 33543 flow [2023-11-29 00:16:13,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1135 transitions, 33192 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 00:16:13,325 INFO L231 Difference]: Finished difference. Result has 427 places, 1116 transitions, 31120 flow [2023-11-29 00:16:13,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30806, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=946, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31120, PETRI_PLACES=427, PETRI_TRANSITIONS=1116} [2023-11-29 00:16:13,326 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 377 predicate places. [2023-11-29 00:16:13,326 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1116 transitions, 31120 flow [2023-11-29 00:16:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:13,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:16:13,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-29 00:16:13,327 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:16:13,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -604877894, now seen corresponding path program 12 times [2023-11-29 00:16:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:13,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519768622] [2023-11-29 00:16:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:13,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:13,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519768622] [2023-11-29 00:16:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519768622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:13,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406191380] [2023-11-29 00:16:13,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:16:13,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:13,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:13,435 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:13,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:16:13,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:16:13,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:16:13,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:16:13,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:13,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406191380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:13,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:16:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-11-29 00:16:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298896772] [2023-11-29 00:16:13,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:13,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:16:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:16:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:16:13,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:16:13,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1116 transitions, 31120 flow. Second operand has 16 states, 16 states have (on average 27.375) internal successors, (438), 16 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:13,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:16:13,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:16:13,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:16:20,688 INFO L124 PetriNetUnfolderBase]: 7542/12989 cut-off events. [2023-11-29 00:16:20,688 INFO L125 PetriNetUnfolderBase]: For 522973/523220 co-relation queries the response was YES. [2023-11-29 00:16:20,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135994 conditions, 12989 events. 7542/12989 cut-off events. For 522973/523220 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 99208 event pairs, 1690 based on Foata normal form. 90/12989 useless extension candidates. Maximal degree in co-relation 135810. Up to 9081 conditions per place. [2023-11-29 00:16:20,958 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 867 selfloop transitions, 516 changer transitions 0/1392 dead transitions. [2023-11-29 00:16:20,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1392 transitions, 39490 flow [2023-11-29 00:16:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:16:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 00:16:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 824 transitions. [2023-11-29 00:16:20,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7012765957446808 [2023-11-29 00:16:20,959 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 824 transitions. [2023-11-29 00:16:20,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 824 transitions. [2023-11-29 00:16:20,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:16:20,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 824 transitions. [2023-11-29 00:16:20,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 32.96) internal successors, (824), 25 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:20,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 47.0) internal successors, (1222), 26 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:20,962 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 47.0) internal successors, (1222), 26 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:20,962 INFO L175 Difference]: Start difference. First operand has 427 places, 1116 transitions, 31120 flow. Second operand 25 states and 824 transitions. [2023-11-29 00:16:20,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1392 transitions, 39490 flow [2023-11-29 00:16:25,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1392 transitions, 39097 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 00:16:25,651 INFO L231 Difference]: Finished difference. Result has 459 places, 1287 transitions, 36450 flow [2023-11-29 00:16:25,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=30779, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=36450, PETRI_PLACES=459, PETRI_TRANSITIONS=1287} [2023-11-29 00:16:25,653 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 409 predicate places. [2023-11-29 00:16:25,653 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 1287 transitions, 36450 flow [2023-11-29 00:16:25,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.375) internal successors, (438), 16 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:25,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:16:25,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:25,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:16:25,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 00:16:25,854 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:16:25,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:25,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1628238184, now seen corresponding path program 13 times [2023-11-29 00:16:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652668842] [2023-11-29 00:16:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:25,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652668842] [2023-11-29 00:16:25,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652668842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:25,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084128800] [2023-11-29 00:16:25,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:16:25,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:25,962 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:25,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:16:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:26,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:16:26,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:26,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084128800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:26,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:16:26,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-29 00:16:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778343563] [2023-11-29 00:16:26,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:26,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:16:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:16:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:16:26,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:16:26,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1287 transitions, 36450 flow. Second operand has 15 states, 15 states have (on average 27.2) internal successors, (408), 15 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:26,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:16:26,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:16:26,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:16:33,639 INFO L124 PetriNetUnfolderBase]: 7726/13435 cut-off events. [2023-11-29 00:16:33,639 INFO L125 PetriNetUnfolderBase]: For 595111/595355 co-relation queries the response was YES. [2023-11-29 00:16:33,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146364 conditions, 13435 events. 7726/13435 cut-off events. For 595111/595355 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 104569 event pairs, 1761 based on Foata normal form. 47/13396 useless extension candidates. Maximal degree in co-relation 146167. Up to 9382 conditions per place. [2023-11-29 00:16:33,874 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 919 selfloop transitions, 504 changer transitions 0/1432 dead transitions. [2023-11-29 00:16:33,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1432 transitions, 42288 flow [2023-11-29 00:16:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:16:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:16:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 688 transitions. [2023-11-29 00:16:33,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6970618034447822 [2023-11-29 00:16:33,876 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 688 transitions. [2023-11-29 00:16:33,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 688 transitions. [2023-11-29 00:16:33,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:16:33,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 688 transitions. [2023-11-29 00:16:33,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.76190476190476) internal successors, (688), 21 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:33,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:33,878 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:33,879 INFO L175 Difference]: Start difference. First operand has 459 places, 1287 transitions, 36450 flow. Second operand 21 states and 688 transitions. [2023-11-29 00:16:33,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1432 transitions, 42288 flow [2023-11-29 00:16:39,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1432 transitions, 41047 flow, removed 422 selfloop flow, removed 4 redundant places. [2023-11-29 00:16:39,595 INFO L231 Difference]: Finished difference. Result has 483 places, 1347 transitions, 38345 flow [2023-11-29 00:16:39,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=35263, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=806, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=38345, PETRI_PLACES=483, PETRI_TRANSITIONS=1347} [2023-11-29 00:16:39,597 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 433 predicate places. [2023-11-29 00:16:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1347 transitions, 38345 flow [2023-11-29 00:16:39,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.2) internal successors, (408), 15 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:39,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:16:39,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:39,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 00:16:39,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:39,798 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:16:39,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1148792495, now seen corresponding path program 22 times [2023-11-29 00:16:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:39,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065013819] [2023-11-29 00:16:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:39,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065013819] [2023-11-29 00:16:39,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065013819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:16:39,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:16:39,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:16:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189819317] [2023-11-29 00:16:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:16:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:16:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:16:39,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:16:39,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:16:39,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1347 transitions, 38345 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:39,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:16:39,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:16:39,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:16:46,946 INFO L124 PetriNetUnfolderBase]: 7740/13307 cut-off events. [2023-11-29 00:16:46,946 INFO L125 PetriNetUnfolderBase]: For 594319/594579 co-relation queries the response was YES. [2023-11-29 00:16:47,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148266 conditions, 13307 events. 7740/13307 cut-off events. For 594319/594579 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 101911 event pairs, 2240 based on Foata normal form. 10/13246 useless extension candidates. Maximal degree in co-relation 148061. Up to 11050 conditions per place. [2023-11-29 00:16:47,381 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1158 selfloop transitions, 201 changer transitions 0/1368 dead transitions. [2023-11-29 00:16:47,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1368 transitions, 41298 flow [2023-11-29 00:16:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:16:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:16:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2023-11-29 00:16:47,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112462006079028 [2023-11-29 00:16:47,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2023-11-29 00:16:47,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2023-11-29 00:16:47,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:16:47,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2023-11-29 00:16:47,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:47,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:47,383 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:47,383 INFO L175 Difference]: Start difference. First operand has 483 places, 1347 transitions, 38345 flow. Second operand 7 states and 234 transitions. [2023-11-29 00:16:47,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1368 transitions, 41298 flow [2023-11-29 00:16:53,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1368 transitions, 40576 flow, removed 288 selfloop flow, removed 6 redundant places. [2023-11-29 00:16:54,013 INFO L231 Difference]: Finished difference. Result has 484 places, 1349 transitions, 38104 flow [2023-11-29 00:16:54,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=37626, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38104, PETRI_PLACES=484, PETRI_TRANSITIONS=1349} [2023-11-29 00:16:54,015 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 434 predicate places. [2023-11-29 00:16:54,015 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 1349 transitions, 38104 flow [2023-11-29 00:16:54,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:54,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:16:54,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:54,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-29 00:16:54,015 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:16:54,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash 265832773, now seen corresponding path program 23 times [2023-11-29 00:16:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852364390] [2023-11-29 00:16:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:54,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:16:54,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852364390] [2023-11-29 00:16:54,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852364390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:16:54,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:16:54,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:16:54,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152681094] [2023-11-29 00:16:54,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:16:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:16:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:54,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:16:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:16:54,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:16:54,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1349 transitions, 38104 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:16:54,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:16:54,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:16:54,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:17:01,604 INFO L124 PetriNetUnfolderBase]: 7756/13341 cut-off events. [2023-11-29 00:17:01,604 INFO L125 PetriNetUnfolderBase]: For 556526/556766 co-relation queries the response was YES. [2023-11-29 00:17:01,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146082 conditions, 13341 events. 7756/13341 cut-off events. For 556526/556766 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 102317 event pairs, 2156 based on Foata normal form. 12/13281 useless extension candidates. Maximal degree in co-relation 145875. Up to 11076 conditions per place. [2023-11-29 00:17:01,926 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1160 selfloop transitions, 203 changer transitions 0/1372 dead transitions. [2023-11-29 00:17:01,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1372 transitions, 41088 flow [2023-11-29 00:17:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:17:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:17:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2023-11-29 00:17:01,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 00:17:01,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2023-11-29 00:17:01,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2023-11-29 00:17:01,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:17:01,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2023-11-29 00:17:01,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:01,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:01,928 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:01,928 INFO L175 Difference]: Start difference. First operand has 484 places, 1349 transitions, 38104 flow. Second operand 7 states and 235 transitions. [2023-11-29 00:17:01,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1372 transitions, 41088 flow [2023-11-29 00:17:07,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1372 transitions, 40679 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-29 00:17:07,924 INFO L231 Difference]: Finished difference. Result has 486 places, 1352 transitions, 38199 flow [2023-11-29 00:17:07,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=37695, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38199, PETRI_PLACES=486, PETRI_TRANSITIONS=1352} [2023-11-29 00:17:07,926 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 436 predicate places. [2023-11-29 00:17:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 1352 transitions, 38199 flow [2023-11-29 00:17:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:17:07,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-29 00:17:07,926 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:17:07,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:07,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2060416279, now seen corresponding path program 6 times [2023-11-29 00:17:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:07,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096166617] [2023-11-29 00:17:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:08,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:08,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096166617] [2023-11-29 00:17:08,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096166617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:17:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377235665] [2023-11-29 00:17:08,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:17:08,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:08,047 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:17:08,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:17:08,165 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:17:08,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:17:08,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:17:08,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:08,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:17:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:08,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377235665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:17:08,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:17:08,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-11-29 00:17:08,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781366375] [2023-11-29 00:17:08,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:17:08,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:17:08,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:17:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:17:08,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:17:08,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1352 transitions, 38199 flow. Second operand has 16 states, 16 states have (on average 27.0625) internal successors, (433), 16 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:08,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:17:08,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:17:08,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:17:16,486 INFO L124 PetriNetUnfolderBase]: 7928/13650 cut-off events. [2023-11-29 00:17:16,487 INFO L125 PetriNetUnfolderBase]: For 574091/574332 co-relation queries the response was YES. [2023-11-29 00:17:16,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149123 conditions, 13650 events. 7928/13650 cut-off events. For 574091/574332 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 105048 event pairs, 2208 based on Foata normal form. 42/13619 useless extension candidates. Maximal degree in co-relation 148915. Up to 11032 conditions per place. [2023-11-29 00:17:16,818 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1174 selfloop transitions, 289 changer transitions 0/1472 dead transitions. [2023-11-29 00:17:16,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1472 transitions, 43239 flow [2023-11-29 00:17:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:17:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 00:17:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 594 transitions. [2023-11-29 00:17:16,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2023-11-29 00:17:16,820 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 594 transitions. [2023-11-29 00:17:16,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 594 transitions. [2023-11-29 00:17:16,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:17:16,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 594 transitions. [2023-11-29 00:17:16,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:16,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 47.0) internal successors, (893), 19 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:16,821 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 47.0) internal successors, (893), 19 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:16,822 INFO L175 Difference]: Start difference. First operand has 486 places, 1352 transitions, 38199 flow. Second operand 18 states and 594 transitions. [2023-11-29 00:17:16,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1472 transitions, 43239 flow [2023-11-29 00:17:23,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1472 transitions, 42769 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-29 00:17:23,060 INFO L231 Difference]: Finished difference. Result has 508 places, 1413 transitions, 40025 flow [2023-11-29 00:17:23,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=37657, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=40025, PETRI_PLACES=508, PETRI_TRANSITIONS=1413} [2023-11-29 00:17:23,061 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 458 predicate places. [2023-11-29 00:17:23,061 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 1413 transitions, 40025 flow [2023-11-29 00:17:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.0625) internal successors, (433), 16 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:23,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:17:23,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:23,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 00:17:23,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:23,262 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:17:23,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:23,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1634512683, now seen corresponding path program 7 times [2023-11-29 00:17:23,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:23,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778271224] [2023-11-29 00:17:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:23,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778271224] [2023-11-29 00:17:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778271224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:17:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674360437] [2023-11-29 00:17:23,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:17:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:23,370 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:17:23,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:17:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:23,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:17:23,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:23,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:17:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:23,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674360437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:17:23,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:17:23,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 00:17:23,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470793682] [2023-11-29 00:17:23,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:17:23,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:17:23,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:17:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:17:23,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:17:23,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1413 transitions, 40025 flow. Second operand has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:23,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:17:23,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:17:23,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:17:31,553 INFO L124 PetriNetUnfolderBase]: 7929/13626 cut-off events. [2023-11-29 00:17:31,553 INFO L125 PetriNetUnfolderBase]: For 583492/583743 co-relation queries the response was YES. [2023-11-29 00:17:31,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150601 conditions, 13626 events. 7929/13626 cut-off events. For 583492/583743 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 104669 event pairs, 2261 based on Foata normal form. 4/13555 useless extension candidates. Maximal degree in co-relation 150382. Up to 11233 conditions per place. [2023-11-29 00:17:31,919 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1199 selfloop transitions, 226 changer transitions 0/1434 dead transitions. [2023-11-29 00:17:31,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1434 transitions, 43046 flow [2023-11-29 00:17:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:17:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:17:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2023-11-29 00:17:31,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7101063829787234 [2023-11-29 00:17:31,920 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2023-11-29 00:17:31,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2023-11-29 00:17:31,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:17:31,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2023-11-29 00:17:31,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,921 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,921 INFO L175 Difference]: Start difference. First operand has 508 places, 1413 transitions, 40025 flow. Second operand 8 states and 267 transitions. [2023-11-29 00:17:31,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1434 transitions, 43046 flow [2023-11-29 00:17:38,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 1434 transitions, 42717 flow, removed 140 selfloop flow, removed 2 redundant places. [2023-11-29 00:17:38,854 INFO L231 Difference]: Finished difference. Result has 513 places, 1412 transitions, 40130 flow [2023-11-29 00:17:38,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=39643, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=40130, PETRI_PLACES=513, PETRI_TRANSITIONS=1412} [2023-11-29 00:17:38,855 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 463 predicate places. [2023-11-29 00:17:38,855 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 1412 transitions, 40130 flow [2023-11-29 00:17:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:38,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:17:38,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:38,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 00:17:39,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:39,056 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:17:39,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1841094631, now seen corresponding path program 24 times [2023-11-29 00:17:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251460495] [2023-11-29 00:17:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:39,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:39,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:39,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251460495] [2023-11-29 00:17:39,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251460495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:39,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:17:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108546574] [2023-11-29 00:17:39,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:39,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:17:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:17:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:17:39,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:17:39,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1412 transitions, 40130 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:39,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:17:39,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:17:39,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:17:47,168 INFO L124 PetriNetUnfolderBase]: 7901/13656 cut-off events. [2023-11-29 00:17:47,168 INFO L125 PetriNetUnfolderBase]: For 581480/581732 co-relation queries the response was YES. [2023-11-29 00:17:47,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150536 conditions, 13656 events. 7901/13656 cut-off events. For 581480/581732 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 105762 event pairs, 2034 based on Foata normal form. 33/13617 useless extension candidates. Maximal degree in co-relation 150316. Up to 10616 conditions per place. [2023-11-29 00:17:47,532 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1139 selfloop transitions, 333 changer transitions 0/1481 dead transitions. [2023-11-29 00:17:47,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1481 transitions, 44416 flow [2023-11-29 00:17:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:17:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:17:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2023-11-29 00:17:47,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7325227963525835 [2023-11-29 00:17:47,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 241 transitions. [2023-11-29 00:17:47,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 241 transitions. [2023-11-29 00:17:47,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:17:47,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 241 transitions. [2023-11-29 00:17:47,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:47,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:47,534 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:47,534 INFO L175 Difference]: Start difference. First operand has 513 places, 1412 transitions, 40130 flow. Second operand 7 states and 241 transitions. [2023-11-29 00:17:47,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1481 transitions, 44416 flow [2023-11-29 00:17:54,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1481 transitions, 44158 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:17:54,214 INFO L231 Difference]: Finished difference. Result has 516 places, 1424 transitions, 41099 flow [2023-11-29 00:17:54,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=39872, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41099, PETRI_PLACES=516, PETRI_TRANSITIONS=1424} [2023-11-29 00:17:54,215 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 466 predicate places. [2023-11-29 00:17:54,215 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 1424 transitions, 41099 flow [2023-11-29 00:17:54,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:54,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:17:54,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-29 00:17:54,215 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:17:54,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 870079930, now seen corresponding path program 14 times [2023-11-29 00:17:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:54,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555331764] [2023-11-29 00:17:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:54,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:54,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555331764] [2023-11-29 00:17:54,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555331764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:54,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:54,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:17:54,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421971738] [2023-11-29 00:17:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:54,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:17:54,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:17:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:17:54,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:17:54,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1424 transitions, 41099 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:54,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:17:54,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:17:54,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:18:02,434 INFO L124 PetriNetUnfolderBase]: 7899/13651 cut-off events. [2023-11-29 00:18:02,434 INFO L125 PetriNetUnfolderBase]: For 598824/599074 co-relation queries the response was YES. [2023-11-29 00:18:02,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152128 conditions, 13651 events. 7899/13651 cut-off events. For 598824/599074 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 105828 event pairs, 2193 based on Foata normal form. 43/13624 useless extension candidates. Maximal degree in co-relation 151906. Up to 10809 conditions per place. [2023-11-29 00:18:02,774 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 1151 selfloop transitions, 295 changer transitions 5/1460 dead transitions. [2023-11-29 00:18:02,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1460 transitions, 44519 flow [2023-11-29 00:18:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:18:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:18:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2023-11-29 00:18:02,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 00:18:02,775 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2023-11-29 00:18:02,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2023-11-29 00:18:02,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:18:02,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2023-11-29 00:18:02,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:02,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:02,776 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:02,776 INFO L175 Difference]: Start difference. First operand has 516 places, 1424 transitions, 41099 flow. Second operand 7 states and 235 transitions. [2023-11-29 00:18:02,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1460 transitions, 44519 flow [2023-11-29 00:18:09,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 1460 transitions, 43804 flow, removed 90 selfloop flow, removed 3 redundant places. [2023-11-29 00:18:09,788 INFO L231 Difference]: Finished difference. Result has 522 places, 1424 transitions, 41114 flow [2023-11-29 00:18:09,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=40384, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41114, PETRI_PLACES=522, PETRI_TRANSITIONS=1424} [2023-11-29 00:18:09,789 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 472 predicate places. [2023-11-29 00:18:09,789 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 1424 transitions, 41114 flow [2023-11-29 00:18:09,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:09,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:18:09,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:09,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-29 00:18:09,790 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:18:09,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash -331426020, now seen corresponding path program 15 times [2023-11-29 00:18:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346963549] [2023-11-29 00:18:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346963549] [2023-11-29 00:18:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346963549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:09,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:09,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:18:09,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289744150] [2023-11-29 00:18:09,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:09,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:18:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:09,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:18:09,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:18:09,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:18:09,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1424 transitions, 41114 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:09,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:18:09,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:18:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:18:17,566 INFO L124 PetriNetUnfolderBase]: 7880/13651 cut-off events. [2023-11-29 00:18:17,567 INFO L125 PetriNetUnfolderBase]: For 601171/601422 co-relation queries the response was YES. [2023-11-29 00:18:17,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151783 conditions, 13651 events. 7880/13651 cut-off events. For 601171/601422 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 106146 event pairs, 2300 based on Foata normal form. 9/13585 useless extension candidates. Maximal degree in co-relation 151558. Up to 11263 conditions per place. [2023-11-29 00:18:17,844 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 1189 selfloop transitions, 242 changer transitions 11/1451 dead transitions. [2023-11-29 00:18:17,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 1451 transitions, 44313 flow [2023-11-29 00:18:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:18:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:18:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2023-11-29 00:18:17,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2023-11-29 00:18:17,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 231 transitions. [2023-11-29 00:18:17,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 231 transitions. [2023-11-29 00:18:17,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:18:17,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 231 transitions. [2023-11-29 00:18:17,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:17,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:17,846 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:17,846 INFO L175 Difference]: Start difference. First operand has 522 places, 1424 transitions, 41114 flow. Second operand 7 states and 231 transitions. [2023-11-29 00:18:17,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 1451 transitions, 44313 flow [2023-11-29 00:18:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1451 transitions, 43751 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-11-29 00:18:24,488 INFO L231 Difference]: Finished difference. Result has 525 places, 1420 transitions, 40913 flow [2023-11-29 00:18:24,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=40554, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40913, PETRI_PLACES=525, PETRI_TRANSITIONS=1420} [2023-11-29 00:18:24,489 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 475 predicate places. [2023-11-29 00:18:24,489 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 1420 transitions, 40913 flow [2023-11-29 00:18:24,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:18:24,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-29 00:18:24,490 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:18:24,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash -111061752, now seen corresponding path program 16 times [2023-11-29 00:18:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:24,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863027413] [2023-11-29 00:18:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:24,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863027413] [2023-11-29 00:18:24,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863027413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:18:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400820775] [2023-11-29 00:18:24,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:18:24,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:24,630 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:24,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:18:24,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:18:24,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:18:24,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:18:24,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:24,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:18:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:24,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400820775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:18:24,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:18:24,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 00:18:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142107671] [2023-11-29 00:18:24,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:24,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:18:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:18:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:18:24,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:18:24,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 1420 transitions, 40913 flow. Second operand has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:24,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:18:24,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:18:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:18:32,297 INFO L124 PetriNetUnfolderBase]: 7853/13603 cut-off events. [2023-11-29 00:18:32,297 INFO L125 PetriNetUnfolderBase]: For 598594/598849 co-relation queries the response was YES. [2023-11-29 00:18:32,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150578 conditions, 13603 events. 7853/13603 cut-off events. For 598594/598849 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 105479 event pairs, 2250 based on Foata normal form. 18/13547 useless extension candidates. Maximal degree in co-relation 150352. Up to 11055 conditions per place. [2023-11-29 00:18:32,569 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1161 selfloop transitions, 273 changer transitions 0/1443 dead transitions. [2023-11-29 00:18:32,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1443 transitions, 44099 flow [2023-11-29 00:18:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:18:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:18:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2023-11-29 00:18:32,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7203647416413373 [2023-11-29 00:18:32,570 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2023-11-29 00:18:32,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2023-11-29 00:18:32,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:18:32,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2023-11-29 00:18:32,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:32,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:32,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:32,571 INFO L175 Difference]: Start difference. First operand has 525 places, 1420 transitions, 40913 flow. Second operand 7 states and 237 transitions. [2023-11-29 00:18:32,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1443 transitions, 44099 flow [2023-11-29 00:18:39,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1443 transitions, 43603 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-29 00:18:39,356 INFO L231 Difference]: Finished difference. Result has 524 places, 1420 transitions, 41006 flow [2023-11-29 00:18:39,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=40397, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41006, PETRI_PLACES=524, PETRI_TRANSITIONS=1420} [2023-11-29 00:18:39,358 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 474 predicate places. [2023-11-29 00:18:39,358 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1420 transitions, 41006 flow [2023-11-29 00:18:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.615384615384617) internal successors, (359), 13 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:18:39,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:39,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 00:18:39,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:39,559 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:18:39,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash -856723381, now seen corresponding path program 25 times [2023-11-29 00:18:39,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:39,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772918755] [2023-11-29 00:18:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:39,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772918755] [2023-11-29 00:18:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772918755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:39,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:18:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554125933] [2023-11-29 00:18:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:18:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:18:39,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:18:39,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:18:39,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1420 transitions, 41006 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:39,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:18:39,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:18:39,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:18:46,868 INFO L124 PetriNetUnfolderBase]: 7848/13579 cut-off events. [2023-11-29 00:18:46,868 INFO L125 PetriNetUnfolderBase]: For 589086/589342 co-relation queries the response was YES. [2023-11-29 00:18:47,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150640 conditions, 13579 events. 7848/13579 cut-off events. For 589086/589342 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 105364 event pairs, 2195 based on Foata normal form. 2/13507 useless extension candidates. Maximal degree in co-relation 150415. Up to 11213 conditions per place. [2023-11-29 00:18:47,146 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1177 selfloop transitions, 246 changer transitions 2/1434 dead transitions. [2023-11-29 00:18:47,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 1434 transitions, 43953 flow [2023-11-29 00:18:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:18:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:18:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2023-11-29 00:18:47,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6960486322188449 [2023-11-29 00:18:47,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 229 transitions. [2023-11-29 00:18:47,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 229 transitions. [2023-11-29 00:18:47,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:18:47,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 229 transitions. [2023-11-29 00:18:47,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:47,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:47,148 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:47,148 INFO L175 Difference]: Start difference. First operand has 524 places, 1420 transitions, 41006 flow. Second operand 7 states and 229 transitions. [2023-11-29 00:18:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 1434 transitions, 43953 flow [2023-11-29 00:18:54,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1434 transitions, 43540 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-29 00:18:54,119 INFO L231 Difference]: Finished difference. Result has 528 places, 1419 transitions, 41043 flow [2023-11-29 00:18:54,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=40546, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41043, PETRI_PLACES=528, PETRI_TRANSITIONS=1419} [2023-11-29 00:18:54,120 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 478 predicate places. [2023-11-29 00:18:54,121 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1419 transitions, 41043 flow [2023-11-29 00:18:54,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:18:54,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:54,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-29 00:18:54,121 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:18:54,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash 635492050, now seen corresponding path program 17 times [2023-11-29 00:18:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:54,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694424374] [2023-11-29 00:18:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:54,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694424374] [2023-11-29 00:18:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694424374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:18:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288761398] [2023-11-29 00:18:54,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:18:54,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:54,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:54,239 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:54,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 00:18:54,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:18:54,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:18:54,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:18:54,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:54,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:18:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288761398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:18:54,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:18:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-29 00:18:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186030421] [2023-11-29 00:18:54,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:18:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:18:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:18:54,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:18:54,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1419 transitions, 41043 flow. Second operand has 15 states, 15 states have (on average 27.0) internal successors, (405), 15 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:18:54,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:18:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:19:02,855 INFO L124 PetriNetUnfolderBase]: 7954/13968 cut-off events. [2023-11-29 00:19:02,855 INFO L125 PetriNetUnfolderBase]: For 611450/611680 co-relation queries the response was YES. [2023-11-29 00:19:03,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153365 conditions, 13968 events. 7954/13968 cut-off events. For 611450/611680 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 110830 event pairs, 1819 based on Foata normal form. 59/13952 useless extension candidates. Maximal degree in co-relation 153140. Up to 9646 conditions per place. [2023-11-29 00:19:03,234 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 973 selfloop transitions, 573 changer transitions 0/1555 dead transitions. [2023-11-29 00:19:03,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1555 transitions, 46933 flow [2023-11-29 00:19:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:19:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:19:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 680 transitions. [2023-11-29 00:19:03,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6889564336372846 [2023-11-29 00:19:03,235 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 680 transitions. [2023-11-29 00:19:03,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 680 transitions. [2023-11-29 00:19:03,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:19:03,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 680 transitions. [2023-11-29 00:19:03,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.38095238095238) internal successors, (680), 21 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:03,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:03,238 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:03,239 INFO L175 Difference]: Start difference. First operand has 528 places, 1419 transitions, 41043 flow. Second operand 21 states and 680 transitions. [2023-11-29 00:19:03,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1555 transitions, 46933 flow [2023-11-29 00:19:10,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1555 transitions, 46588 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 00:19:10,260 INFO L231 Difference]: Finished difference. Result has 553 places, 1479 transitions, 44372 flow [2023-11-29 00:19:10,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=40698, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=869, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=44372, PETRI_PLACES=553, PETRI_TRANSITIONS=1479} [2023-11-29 00:19:10,261 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 503 predicate places. [2023-11-29 00:19:10,261 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 1479 transitions, 44372 flow [2023-11-29 00:19:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.0) internal successors, (405), 15 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:10,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:19:10,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:10,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 00:19:10,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:10,462 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:19:10,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:10,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1317894643, now seen corresponding path program 26 times [2023-11-29 00:19:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:10,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123268143] [2023-11-29 00:19:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:10,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:10,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:10,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123268143] [2023-11-29 00:19:10,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123268143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:19:10,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:19:10,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:19:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961485562] [2023-11-29 00:19:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:19:10,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:19:10,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:19:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:19:10,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:19:10,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1479 transitions, 44372 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:10,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:19:10,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:19:10,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:19:19,354 INFO L124 PetriNetUnfolderBase]: 7919/13785 cut-off events. [2023-11-29 00:19:19,354 INFO L125 PetriNetUnfolderBase]: For 637900/638134 co-relation queries the response was YES. [2023-11-29 00:19:19,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156400 conditions, 13785 events. 7919/13785 cut-off events. For 637900/638134 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 107974 event pairs, 2017 based on Foata normal form. 29/13748 useless extension candidates. Maximal degree in co-relation 156164. Up to 10638 conditions per place. [2023-11-29 00:19:19,736 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1188 selfloop transitions, 341 changer transitions 0/1538 dead transitions. [2023-11-29 00:19:19,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1538 transitions, 48458 flow [2023-11-29 00:19:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:19:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:19:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2023-11-29 00:19:19,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.729483282674772 [2023-11-29 00:19:19,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 240 transitions. [2023-11-29 00:19:19,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 240 transitions. [2023-11-29 00:19:19,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:19:19,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 240 transitions. [2023-11-29 00:19:19,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:19,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:19,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:19,739 INFO L175 Difference]: Start difference. First operand has 553 places, 1479 transitions, 44372 flow. Second operand 7 states and 240 transitions. [2023-11-29 00:19:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 1538 transitions, 48458 flow [2023-11-29 00:19:27,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1538 transitions, 47499 flow, removed 328 selfloop flow, removed 4 redundant places. [2023-11-29 00:19:27,836 INFO L231 Difference]: Finished difference. Result has 556 places, 1479 transitions, 44161 flow [2023-11-29 00:19:27,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=43457, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44161, PETRI_PLACES=556, PETRI_TRANSITIONS=1479} [2023-11-29 00:19:27,837 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 506 predicate places. [2023-11-29 00:19:27,837 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 1479 transitions, 44161 flow [2023-11-29 00:19:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:27,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:19:27,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:27,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-29 00:19:27,838 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:19:27,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1857365721, now seen corresponding path program 27 times [2023-11-29 00:19:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95761084] [2023-11-29 00:19:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:27,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:27,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:27,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95761084] [2023-11-29 00:19:27,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95761084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:19:27,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613985397] [2023-11-29 00:19:27,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:19:27,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:19:27,989 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:19:27,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 00:19:28,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:19:28,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:19:28,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:19:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:28,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613985397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:28,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-11-29 00:19:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342249700] [2023-11-29 00:19:28,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:19:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:19:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:19:28,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:19:28,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 1479 transitions, 44161 flow. Second operand has 16 states, 16 states have (on average 27.3125) internal successors, (437), 16 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:28,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:19:28,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:19:28,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:19:38,566 INFO L124 PetriNetUnfolderBase]: 8916/15560 cut-off events. [2023-11-29 00:19:38,566 INFO L125 PetriNetUnfolderBase]: For 727611/727827 co-relation queries the response was YES. [2023-11-29 00:19:38,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176550 conditions, 15560 events. 8916/15560 cut-off events. For 727611/727827 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 124147 event pairs, 1215 based on Foata normal form. 63/15583 useless extension candidates. Maximal degree in co-relation 176313. Up to 6321 conditions per place. [2023-11-29 00:19:39,020 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 798 selfloop transitions, 1033 changer transitions 0/1840 dead transitions. [2023-11-29 00:19:39,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1840 transitions, 56228 flow [2023-11-29 00:19:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:19:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 00:19:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 725 transitions. [2023-11-29 00:19:39,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011605415860735 [2023-11-29 00:19:39,021 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 725 transitions. [2023-11-29 00:19:39,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 725 transitions. [2023-11-29 00:19:39,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:19:39,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 725 transitions. [2023-11-29 00:19:39,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 32.95454545454545) internal successors, (725), 22 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:39,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 47.0) internal successors, (1081), 23 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:39,023 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 47.0) internal successors, (1081), 23 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:39,023 INFO L175 Difference]: Start difference. First operand has 556 places, 1479 transitions, 44161 flow. Second operand 22 states and 725 transitions. [2023-11-29 00:19:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1840 transitions, 56228 flow [2023-11-29 00:19:48,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1840 transitions, 55428 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-29 00:19:48,249 INFO L231 Difference]: Finished difference. Result has 585 places, 1678 transitions, 53030 flow [2023-11-29 00:19:48,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=43461, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=851, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=53030, PETRI_PLACES=585, PETRI_TRANSITIONS=1678} [2023-11-29 00:19:48,251 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 535 predicate places. [2023-11-29 00:19:48,251 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 1678 transitions, 53030 flow [2023-11-29 00:19:48,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.3125) internal successors, (437), 16 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:48,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:19:48,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:48,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 00:19:48,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:48,452 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:19:48,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1149689811, now seen corresponding path program 28 times [2023-11-29 00:19:48,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:48,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543324329] [2023-11-29 00:19:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:48,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:48,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:48,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543324329] [2023-11-29 00:19:48,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543324329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:19:48,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816794189] [2023-11-29 00:19:48,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:19:48,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:48,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:19:48,568 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:19:48,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 00:19:48,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:19:48,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:19:48,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:19:48,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:48,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816794189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:48,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2023-11-29 00:19:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367208788] [2023-11-29 00:19:48,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:19:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:19:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:19:48,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:19:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 1678 transitions, 53030 flow. Second operand has 15 states, 15 states have (on average 27.4) internal successors, (411), 15 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:19:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:19:48,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:20:00,149 INFO L124 PetriNetUnfolderBase]: 9060/15653 cut-off events. [2023-11-29 00:20:00,150 INFO L125 PetriNetUnfolderBase]: For 812001/812285 co-relation queries the response was YES. [2023-11-29 00:20:00,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188953 conditions, 15653 events. 9060/15653 cut-off events. For 812001/812285 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 123851 event pairs, 1734 based on Foata normal form. 55/15659 useless extension candidates. Maximal degree in co-relation 188704. Up to 10075 conditions per place. [2023-11-29 00:20:00,515 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 1063 selfloop transitions, 789 changer transitions 0/1861 dead transitions. [2023-11-29 00:20:00,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1861 transitions, 60525 flow [2023-11-29 00:20:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:20:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:20:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 682 transitions. [2023-11-29 00:20:00,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.690982776089159 [2023-11-29 00:20:00,516 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 682 transitions. [2023-11-29 00:20:00,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 682 transitions. [2023-11-29 00:20:00,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:20:00,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 682 transitions. [2023-11-29 00:20:00,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.476190476190474) internal successors, (682), 21 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:00,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:00,518 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:00,518 INFO L175 Difference]: Start difference. First operand has 585 places, 1678 transitions, 53030 flow. Second operand 21 states and 682 transitions. [2023-11-29 00:20:00,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 1861 transitions, 60525 flow [2023-11-29 00:20:12,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1861 transitions, 59851 flow, removed 232 selfloop flow, removed 8 redundant places. [2023-11-29 00:20:12,439 INFO L231 Difference]: Finished difference. Result has 609 places, 1752 transitions, 57064 flow [2023-11-29 00:20:12,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=52359, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=57064, PETRI_PLACES=609, PETRI_TRANSITIONS=1752} [2023-11-29 00:20:12,440 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 559 predicate places. [2023-11-29 00:20:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 1752 transitions, 57064 flow [2023-11-29 00:20:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.4) internal successors, (411), 15 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:12,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:20:12,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:20:12,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 00:20:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:20:12,641 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:20:12,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1979313168, now seen corresponding path program 18 times [2023-11-29 00:20:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:20:12,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068211144] [2023-11-29 00:20:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:12,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:20:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:20:12,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:20:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068211144] [2023-11-29 00:20:12,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068211144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:20:12,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:20:12,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:20:12,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630703078] [2023-11-29 00:20:12,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:20:12,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:20:12,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:20:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:20:12,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:20:12,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:20:12,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 1752 transitions, 57064 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:12,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:20:12,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:20:12,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:20:23,475 INFO L124 PetriNetUnfolderBase]: 9040/15544 cut-off events. [2023-11-29 00:20:23,475 INFO L125 PetriNetUnfolderBase]: For 860887/861202 co-relation queries the response was YES. [2023-11-29 00:20:23,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192681 conditions, 15544 events. 9040/15544 cut-off events. For 860887/861202 co-relation queries the response was YES. Maximal size of possible extension queue 1077. Compared 121706 event pairs, 2516 based on Foata normal form. 25/15490 useless extension candidates. Maximal degree in co-relation 192423. Up to 12599 conditions per place. [2023-11-29 00:20:23,979 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 1439 selfloop transitions, 327 changer transitions 0/1775 dead transitions. [2023-11-29 00:20:23,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1775 transitions, 60818 flow [2023-11-29 00:20:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:20:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:20:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2023-11-29 00:20:23,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 00:20:23,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2023-11-29 00:20:23,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2023-11-29 00:20:23,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:20:23,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2023-11-29 00:20:23,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:23,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:23,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:23,981 INFO L175 Difference]: Start difference. First operand has 609 places, 1752 transitions, 57064 flow. Second operand 7 states and 235 transitions. [2023-11-29 00:20:23,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1775 transitions, 60818 flow [2023-11-29 00:20:36,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 1775 transitions, 60102 flow, removed 167 selfloop flow, removed 13 redundant places. [2023-11-29 00:20:36,569 INFO L231 Difference]: Finished difference. Result has 602 places, 1751 transitions, 56943 flow [2023-11-29 00:20:36,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=56289, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56943, PETRI_PLACES=602, PETRI_TRANSITIONS=1751} [2023-11-29 00:20:36,571 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 552 predicate places. [2023-11-29 00:20:36,571 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 1751 transitions, 56943 flow [2023-11-29 00:20:36,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:36,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:20:36,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:20:36,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-11-29 00:20:36,571 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:20:36,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1138476151, now seen corresponding path program 29 times [2023-11-29 00:20:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:20:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590527361] [2023-11-29 00:20:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:20:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:20:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:20:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590527361] [2023-11-29 00:20:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590527361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:20:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:20:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:20:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586753543] [2023-11-29 00:20:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:20:36,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:20:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:20:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:20:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:20:36,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:20:36,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 1751 transitions, 56943 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:36,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:20:36,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:20:36,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:20:47,871 INFO L124 PetriNetUnfolderBase]: 9046/15539 cut-off events. [2023-11-29 00:20:47,872 INFO L125 PetriNetUnfolderBase]: For 855599/855902 co-relation queries the response was YES. [2023-11-29 00:20:48,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192648 conditions, 15539 events. 9046/15539 cut-off events. For 855599/855902 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 121663 event pairs, 2611 based on Foata normal form. 12/15473 useless extension candidates. Maximal degree in co-relation 192398. Up to 12989 conditions per place. [2023-11-29 00:20:48,611 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1495 selfloop transitions, 267 changer transitions 0/1771 dead transitions. [2023-11-29 00:20:48,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 1771 transitions, 60789 flow [2023-11-29 00:20:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:20:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:20:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2023-11-29 00:20:48,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7082066869300911 [2023-11-29 00:20:48,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2023-11-29 00:20:48,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2023-11-29 00:20:48,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:20:48,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2023-11-29 00:20:48,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:48,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:48,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:48,613 INFO L175 Difference]: Start difference. First operand has 602 places, 1751 transitions, 56943 flow. Second operand 7 states and 233 transitions. [2023-11-29 00:20:48,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 1771 transitions, 60789 flow [2023-11-29 00:21:03,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1771 transitions, 60094 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-29 00:21:04,015 INFO L231 Difference]: Finished difference. Result has 604 places, 1753 transitions, 56892 flow [2023-11-29 00:21:04,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=56191, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56892, PETRI_PLACES=604, PETRI_TRANSITIONS=1753} [2023-11-29 00:21:04,017 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 554 predicate places. [2023-11-29 00:21:04,017 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1753 transitions, 56892 flow [2023-11-29 00:21:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:04,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:21:04,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:04,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-29 00:21:04,017 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:21:04,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -665260281, now seen corresponding path program 8 times [2023-11-29 00:21:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760093649] [2023-11-29 00:21:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:04,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760093649] [2023-11-29 00:21:04,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760093649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:21:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314466142] [2023-11-29 00:21:04,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:21:04,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:04,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:04,172 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:04,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 00:21:04,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:21:04,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:21:04,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:21:04,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:04,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314466142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:04,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:21:04,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-11-29 00:21:04,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27112025] [2023-11-29 00:21:04,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:04,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:21:04,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:04,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:21:04,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:21:04,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:21:04,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1753 transitions, 56892 flow. Second operand has 17 states, 17 states have (on average 27.0) internal successors, (459), 17 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:04,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:21:04,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:21:04,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:21:20,728 INFO L124 PetriNetUnfolderBase]: 11190/19289 cut-off events. [2023-11-29 00:21:20,728 INFO L125 PetriNetUnfolderBase]: For 1053749/1054088 co-relation queries the response was YES. [2023-11-29 00:21:21,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235917 conditions, 19289 events. 11190/19289 cut-off events. For 1053749/1054088 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 156847 event pairs, 2143 based on Foata normal form. 47/19254 useless extension candidates. Maximal degree in co-relation 235666. Up to 9948 conditions per place. [2023-11-29 00:21:21,365 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 1203 selfloop transitions, 1051 changer transitions 0/2263 dead transitions. [2023-11-29 00:21:21,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 2263 transitions, 75100 flow [2023-11-29 00:21:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:21:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 00:21:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 759 transitions. [2023-11-29 00:21:21,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2023-11-29 00:21:21,367 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 759 transitions. [2023-11-29 00:21:21,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 759 transitions. [2023-11-29 00:21:21,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:21:21,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 759 transitions. [2023-11-29 00:21:21,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 33.0) internal successors, (759), 23 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:21,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 47.0) internal successors, (1128), 24 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:21,369 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 47.0) internal successors, (1128), 24 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:21,369 INFO L175 Difference]: Start difference. First operand has 604 places, 1753 transitions, 56892 flow. Second operand 23 states and 759 transitions. [2023-11-29 00:21:21,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 2263 transitions, 75100 flow [2023-11-29 00:21:36,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 2263 transitions, 74532 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-29 00:21:36,982 INFO L231 Difference]: Finished difference. Result has 638 places, 2067 transitions, 70301 flow [2023-11-29 00:21:36,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=56445, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=766, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=851, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=70301, PETRI_PLACES=638, PETRI_TRANSITIONS=2067} [2023-11-29 00:21:36,983 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 588 predicate places. [2023-11-29 00:21:36,983 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 2067 transitions, 70301 flow [2023-11-29 00:21:36,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 27.0) internal successors, (459), 17 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:36,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:21:36,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:36,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 00:21:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-11-29 00:21:37,184 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:21:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1687806307, now seen corresponding path program 30 times [2023-11-29 00:21:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350138450] [2023-11-29 00:21:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350138450] [2023-11-29 00:21:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350138450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:21:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375779027] [2023-11-29 00:21:37,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:21:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:37,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:37,313 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:37,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 00:21:37,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:21:37,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:21:37,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:21:37,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:37,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:37,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375779027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:37,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:21:37,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 13 [2023-11-29 00:21:37,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552761945] [2023-11-29 00:21:37,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:37,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:21:37,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:21:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:21:37,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:21:37,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 2067 transitions, 70301 flow. Second operand has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:37,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:21:37,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:21:37,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:21:52,480 INFO L124 PetriNetUnfolderBase]: 11231/19356 cut-off events. [2023-11-29 00:21:52,480 INFO L125 PetriNetUnfolderBase]: For 1178700/1179085 co-relation queries the response was YES. [2023-11-29 00:21:52,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247444 conditions, 19356 events. 11231/19356 cut-off events. For 1178700/1179085 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 157345 event pairs, 2410 based on Foata normal form. 42/19329 useless extension candidates. Maximal degree in co-relation 247178. Up to 13636 conditions per place. [2023-11-29 00:21:53,156 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1302 selfloop transitions, 848 changer transitions 0/2159 dead transitions. [2023-11-29 00:21:53,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 2159 transitions, 76500 flow [2023-11-29 00:21:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:21:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:21:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 400 transitions. [2023-11-29 00:21:53,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2023-11-29 00:21:53,157 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 400 transitions. [2023-11-29 00:21:53,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 400 transitions. [2023-11-29 00:21:53,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:21:53,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 400 transitions. [2023-11-29 00:21:53,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.333333333333336) internal successors, (400), 12 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:53,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:53,158 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:53,158 INFO L175 Difference]: Start difference. First operand has 638 places, 2067 transitions, 70301 flow. Second operand 12 states and 400 transitions. [2023-11-29 00:21:53,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 2159 transitions, 76500 flow [2023-11-29 00:22:10,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 2159 transitions, 75940 flow, removed 278 selfloop flow, removed 1 redundant places. [2023-11-29 00:22:10,244 INFO L231 Difference]: Finished difference. Result has 651 places, 2086 transitions, 72678 flow [2023-11-29 00:22:10,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69643, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=826, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=72678, PETRI_PLACES=651, PETRI_TRANSITIONS=2086} [2023-11-29 00:22:10,246 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 601 predicate places. [2023-11-29 00:22:10,246 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 2086 transitions, 72678 flow [2023-11-29 00:22:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:10,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:22:10,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:10,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 00:22:10,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:10,446 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:22:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 126413497, now seen corresponding path program 9 times [2023-11-29 00:22:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:22:10,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479187001] [2023-11-29 00:22:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:22:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:22:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479187001] [2023-11-29 00:22:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479187001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:22:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686846060] [2023-11-29 00:22:10,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:22:10,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:22:10,568 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:22:10,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 00:22:10,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:22:10,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:22:10,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:22:10,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:10,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:10,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686846060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:10,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:22:10,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-11-29 00:22:10,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533883592] [2023-11-29 00:22:10,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:22:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:22:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:22:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:22:10,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:22:10,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 2086 transitions, 72678 flow. Second operand has 14 states, 14 states have (on average 27.214285714285715) internal successors, (381), 14 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) [2023-11-29 00:22:10,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:22:10,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:22:10,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:22:29,198 INFO L124 PetriNetUnfolderBase]: 11653/20101 cut-off events. [2023-11-29 00:22:29,199 INFO L125 PetriNetUnfolderBase]: For 1260527/1260901 co-relation queries the response was YES. [2023-11-29 00:22:29,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261183 conditions, 20101 events. 11653/20101 cut-off events. For 1260527/1260901 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 165025 event pairs, 2428 based on Foata normal form. 30/20048 useless extension candidates. Maximal degree in co-relation 260912. Up to 8939 conditions per place. [2023-11-29 00:22:29,971 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1429 selfloop transitions, 764 changer transitions 0/2202 dead transitions. [2023-11-29 00:22:29,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 2202 transitions, 79912 flow [2023-11-29 00:22:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:22:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:22:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 403 transitions. [2023-11-29 00:22:29,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7145390070921985 [2023-11-29 00:22:29,972 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 403 transitions. [2023-11-29 00:22:29,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 403 transitions. [2023-11-29 00:22:29,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:22:29,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 403 transitions. [2023-11-29 00:22:29,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 33.583333333333336) internal successors, (403), 12 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:29,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:29,974 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:29,974 INFO L175 Difference]: Start difference. First operand has 651 places, 2086 transitions, 72678 flow. Second operand 12 states and 403 transitions. [2023-11-29 00:22:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 2202 transitions, 79912 flow [2023-11-29 00:22:49,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 2202 transitions, 79327 flow, removed 101 selfloop flow, removed 2 redundant places. [2023-11-29 00:22:50,067 INFO L231 Difference]: Finished difference. Result has 662 places, 2110 transitions, 75473 flow [2023-11-29 00:22:50,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72002, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=75473, PETRI_PLACES=662, PETRI_TRANSITIONS=2110} [2023-11-29 00:22:50,069 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 612 predicate places. [2023-11-29 00:22:50,069 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 2110 transitions, 75473 flow [2023-11-29 00:22:50,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.214285714285715) internal successors, (381), 14 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) [2023-11-29 00:22:50,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:22:50,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:50,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 00:22:50,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:50,270 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:22:50,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:50,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1275457825, now seen corresponding path program 10 times [2023-11-29 00:22:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:22:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883512710] [2023-11-29 00:22:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:22:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:22:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883512710] [2023-11-29 00:22:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883512710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:50,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:22:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507124923] [2023-11-29 00:22:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:22:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:22:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:22:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:50,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:22:50,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 2110 transitions, 75473 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:50,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:22:50,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:22:50,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:23:07,989 INFO L124 PetriNetUnfolderBase]: 11638/20283 cut-off events. [2023-11-29 00:23:07,989 INFO L125 PetriNetUnfolderBase]: For 1343747/1343947 co-relation queries the response was YES. [2023-11-29 00:23:08,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265764 conditions, 20283 events. 11638/20283 cut-off events. For 1343747/1343947 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 168876 event pairs, 2620 based on Foata normal form. 28/20206 useless extension candidates. Maximal degree in co-relation 265491. Up to 14604 conditions per place. [2023-11-29 00:23:08,615 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 1710 selfloop transitions, 503 changer transitions 12/2234 dead transitions. [2023-11-29 00:23:08,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 2234 transitions, 82952 flow [2023-11-29 00:23:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:23:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:23:08,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2023-11-29 00:23:08,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264437689969605 [2023-11-29 00:23:08,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 239 transitions. [2023-11-29 00:23:08,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 239 transitions. [2023-11-29 00:23:08,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:23:08,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 239 transitions. [2023-11-29 00:23:08,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:08,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:08,617 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:08,617 INFO L175 Difference]: Start difference. First operand has 662 places, 2110 transitions, 75473 flow. Second operand 7 states and 239 transitions. [2023-11-29 00:23:08,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 2234 transitions, 82952 flow [2023-11-29 00:23:29,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 2234 transitions, 82705 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-29 00:23:29,192 INFO L231 Difference]: Finished difference. Result has 666 places, 2114 transitions, 76496 flow [2023-11-29 00:23:29,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75192, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76496, PETRI_PLACES=666, PETRI_TRANSITIONS=2114} [2023-11-29 00:23:29,194 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 616 predicate places. [2023-11-29 00:23:29,194 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 2114 transitions, 76496 flow [2023-11-29 00:23:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:29,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:23:29,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:29,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-11-29 00:23:29,194 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:23:29,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1262041151, now seen corresponding path program 31 times [2023-11-29 00:23:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465699673] [2023-11-29 00:23:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465699673] [2023-11-29 00:23:29,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465699673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:29,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:29,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:23:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301207362] [2023-11-29 00:23:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:29,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:23:29,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:23:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:23:29,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:23:29,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 2114 transitions, 76496 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:29,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:23:29,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:23:29,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:23:46,606 INFO L124 PetriNetUnfolderBase]: 11843/20715 cut-off events. [2023-11-29 00:23:46,606 INFO L125 PetriNetUnfolderBase]: For 1405798/1406055 co-relation queries the response was YES. [2023-11-29 00:23:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273457 conditions, 20715 events. 11843/20715 cut-off events. For 1405798/1406055 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 173720 event pairs, 2601 based on Foata normal form. 83/20707 useless extension candidates. Maximal degree in co-relation 273180. Up to 14467 conditions per place. [2023-11-29 00:23:47,341 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 1624 selfloop transitions, 654 changer transitions 6/2293 dead transitions. [2023-11-29 00:23:47,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 2293 transitions, 86193 flow [2023-11-29 00:23:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:23:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:23:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2023-11-29 00:23:47,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112462006079028 [2023-11-29 00:23:47,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2023-11-29 00:23:47,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2023-11-29 00:23:47,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:23:47,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2023-11-29 00:23:47,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:47,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:47,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:47,343 INFO L175 Difference]: Start difference. First operand has 666 places, 2114 transitions, 76496 flow. Second operand 7 states and 234 transitions. [2023-11-29 00:23:47,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 2293 transitions, 86193 flow [2023-11-29 00:24:08,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 2293 transitions, 85136 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-29 00:24:08,595 INFO L231 Difference]: Finished difference. Result has 672 places, 2178 transitions, 80048 flow [2023-11-29 00:24:08,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75463, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=80048, PETRI_PLACES=672, PETRI_TRANSITIONS=2178} [2023-11-29 00:24:08,597 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 622 predicate places. [2023-11-29 00:24:08,597 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 2178 transitions, 80048 flow [2023-11-29 00:24:08,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:08,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:24:08,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-29 00:24:08,597 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:24:08,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2657837, now seen corresponding path program 32 times [2023-11-29 00:24:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:08,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796644516] [2023-11-29 00:24:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:24:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796644516] [2023-11-29 00:24:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796644516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:24:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076098331] [2023-11-29 00:24:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:24:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:24:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:24:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:24:08,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 2178 transitions, 80048 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:08,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:24:08,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:24:08,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:24:26,923 INFO L124 PetriNetUnfolderBase]: 11876/20856 cut-off events. [2023-11-29 00:24:26,923 INFO L125 PetriNetUnfolderBase]: For 1426478/1426687 co-relation queries the response was YES. [2023-11-29 00:24:27,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279237 conditions, 20856 events. 11876/20856 cut-off events. For 1426478/1426687 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 176009 event pairs, 2742 based on Foata normal form. 45/20802 useless extension candidates. Maximal degree in co-relation 278956. Up to 14972 conditions per place. [2023-11-29 00:24:27,664 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 1689 selfloop transitions, 586 changer transitions 4/2288 dead transitions. [2023-11-29 00:24:27,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 2288 transitions, 87262 flow [2023-11-29 00:24:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:24:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:24:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2023-11-29 00:24:27,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7082066869300911 [2023-11-29 00:24:27,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2023-11-29 00:24:27,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2023-11-29 00:24:27,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:24:27,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2023-11-29 00:24:27,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:27,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:27,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:27,666 INFO L175 Difference]: Start difference. First operand has 672 places, 2178 transitions, 80048 flow. Second operand 7 states and 233 transitions. [2023-11-29 00:24:27,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 2288 transitions, 87262 flow [2023-11-29 00:24:50,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 2288 transitions, 86656 flow, removed 289 selfloop flow, removed 4 redundant places. [2023-11-29 00:24:51,027 INFO L231 Difference]: Finished difference. Result has 675 places, 2185 transitions, 80921 flow [2023-11-29 00:24:51,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=79429, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=80921, PETRI_PLACES=675, PETRI_TRANSITIONS=2185} [2023-11-29 00:24:51,028 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 625 predicate places. [2023-11-29 00:24:51,029 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 2185 transitions, 80921 flow [2023-11-29 00:24:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:51,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:24:51,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-11-29 00:24:51,029 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:24:51,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1811345537, now seen corresponding path program 33 times [2023-11-29 00:24:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:51,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480111382] [2023-11-29 00:24:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:51,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:24:51,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:51,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480111382] [2023-11-29 00:24:51,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480111382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:51,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:51,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:24:51,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159199630] [2023-11-29 00:24:51,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:51,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:24:51,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:24:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:24:51,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:24:51,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 2185 transitions, 80921 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:51,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:24:51,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:24:51,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:25:09,479 INFO L124 PetriNetUnfolderBase]: 11912/20723 cut-off events. [2023-11-29 00:25:09,479 INFO L125 PetriNetUnfolderBase]: For 1426263/1426612 co-relation queries the response was YES. [2023-11-29 00:25:10,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280834 conditions, 20723 events. 11912/20723 cut-off events. For 1426263/1426612 co-relation queries the response was YES. Maximal size of possible extension queue 1460. Compared 172753 event pairs, 2136 based on Foata normal form. 81/20719 useless extension candidates. Maximal degree in co-relation 280554. Up to 11150 conditions per place. [2023-11-29 00:25:10,193 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1759 selfloop transitions, 584 changer transitions 4/2356 dead transitions. [2023-11-29 00:25:10,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 2356 transitions, 89837 flow [2023-11-29 00:25:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:25:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:25:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2023-11-29 00:25:10,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 00:25:10,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2023-11-29 00:25:10,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2023-11-29 00:25:10,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:25:10,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2023-11-29 00:25:10,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:10,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:10,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:10,195 INFO L175 Difference]: Start difference. First operand has 675 places, 2185 transitions, 80921 flow. Second operand 7 states and 235 transitions. [2023-11-29 00:25:10,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 2356 transitions, 89837 flow [2023-11-29 00:25:33,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 2356 transitions, 88475 flow, removed 69 selfloop flow, removed 6 redundant places. [2023-11-29 00:25:33,279 INFO L231 Difference]: Finished difference. Result has 678 places, 2209 transitions, 82037 flow [2023-11-29 00:25:33,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=79597, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=560, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=82037, PETRI_PLACES=678, PETRI_TRANSITIONS=2209} [2023-11-29 00:25:33,281 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 628 predicate places. [2023-11-29 00:25:33,281 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 2209 transitions, 82037 flow [2023-11-29 00:25:33,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:33,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:25:33,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:25:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-29 00:25:33,282 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 00:25:33,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash -82650843, now seen corresponding path program 34 times [2023-11-29 00:25:33,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:33,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960122386] [2023-11-29 00:25:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:33,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:25:33,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:25:33,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960122386] [2023-11-29 00:25:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960122386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:25:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250406650] [2023-11-29 00:25:33,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:25:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:25:33,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:25:33,375 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:25:33,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd038b0-4d47-42d5-a890-1077622134a2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 00:25:33,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:25:33,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:25:33,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:25:33,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:25:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:25:33,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:25:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:25:33,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250406650] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:25:33,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:25:33,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-11-29 00:25:33,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170759095] [2023-11-29 00:25:33,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:25:33,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:25:33,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:25:33,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:25:33,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:25:33,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 00:25:33,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 2209 transitions, 82037 flow. Second operand has 16 states, 16 states have (on average 26.9375) internal successors, (431), 16 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:33,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:25:33,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 00:25:33,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand