./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/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_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/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_a47fb580-805f-40ef-afe2-87dd67e625d6/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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:00:38,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:00:38,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:00:38,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:00:38,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:00:38,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:00:38,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:00:38,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:00:38,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:00:38,910 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:00:38,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:00:38,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:00:38,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:00:38,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:00:38,913 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:00:38,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:00:38,914 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:00:38,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:00:38,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:00:38,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:00:38,916 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:00:38,916 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:00:38,917 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:00:38,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:00:38,918 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:00:38,918 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:00:38,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:00:38,919 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:00:38,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:00:38,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:00:38,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:00:38,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:00:38,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:00:38,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:00:38,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:00:38,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:00:38,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:00:38,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:00:38,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:00:38,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:00:38,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:00:38,922 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_a47fb580-805f-40ef-afe2-87dd67e625d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2023-11-29 05:00:39,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:00:39,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:00:39,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:00:39,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:00:39,181 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:00:39,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-29 05:00:41,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:00:42,160 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:00:42,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-29 05:00:42,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/data/992090ddc/2e67c5f49aef486eb9a9eaa0d45a0dc5/FLAG091213837 [2023-11-29 05:00:42,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/data/992090ddc/2e67c5f49aef486eb9a9eaa0d45a0dc5 [2023-11-29 05:00:42,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:00:42,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:00:42,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:00:42,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:00:42,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:00:42,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddadc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42, skipping insertion in model container [2023-11-29 05:00:42,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:00:42,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:00:42,580 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:00:42,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:00:42,662 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:00:42,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42 WrapperNode [2023-11-29 05:00:42,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:00:42,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:00:42,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:00:42,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:00:42,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,711 INFO L138 Inliner]: procedures = 166, calls = 39, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 131 [2023-11-29 05:00:42,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:00:42,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:00:42,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:00:42,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:00:42,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,744 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 16, 1]. 84 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 4 writes are split as follows [0, 3, 1]. [2023-11-29 05:00:42,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:00:42,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:00:42,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:00:42,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:00:42,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (1/1) ... [2023-11-29 05:00:42,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:00:42,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:00:42,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:00:42,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:00:42,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:00:42,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:00:42,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-29 05:00:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:00:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:00:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:00:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:00:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:00:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:00:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 05:00:42,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:00:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:00:42,839 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 05:00:42,982 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:00:42,984 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:00:43,256 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:00:43,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:00:43,425 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 05:00:43,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:00:43 BoogieIcfgContainer [2023-11-29 05:00:43,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:00:43,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:00:43,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:00:43,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:00:43,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:00:42" (1/3) ... [2023-11-29 05:00:43,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ac0237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:00:43, skipping insertion in model container [2023-11-29 05:00:43,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:00:42" (2/3) ... [2023-11-29 05:00:43,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ac0237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:00:43, skipping insertion in model container [2023-11-29 05:00:43,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:00:43" (3/3) ... [2023-11-29 05:00:43,434 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-29 05:00:43,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:00:43,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-11-29 05:00:43,449 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:00:43,498 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:00:43,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 78 transitions, 160 flow [2023-11-29 05:00:43,563 INFO L124 PetriNetUnfolderBase]: 10/77 cut-off events. [2023-11-29 05:00:43,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:00:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 10/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-29 05:00:43,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 78 transitions, 160 flow [2023-11-29 05:00:43,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 77 transitions, 157 flow [2023-11-29 05:00:43,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:00:43,590 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;@30f32bf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:00:43,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-29 05:00:43,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:00:43,593 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-29 05:00:43,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:00:43,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:43,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 05:00:43,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:43,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 13828, now seen corresponding path program 1 times [2023-11-29 05:00:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442972757] [2023-11-29 05:00:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:43,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:00:43,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442972757] [2023-11-29 05:00:43,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442972757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:43,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:43,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:00:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599626131] [2023-11-29 05:00:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:00:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:00:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:00:43,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-29 05:00:43,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:43,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:43,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-29 05:00:43,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:44,132 INFO L124 PetriNetUnfolderBase]: 211/623 cut-off events. [2023-11-29 05:00:44,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:00:44,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 623 events. 211/623 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3823 event pairs, 143 based on Foata normal form. 52/526 useless extension candidates. Maximal degree in co-relation 987. Up to 374 conditions per place. [2023-11-29 05:00:44,152 INFO L140 encePairwiseOnDemand]: 69/78 looper letters, 29 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-29 05:00:44,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 201 flow [2023-11-29 05:00:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:00:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:00:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-29 05:00:44,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495726495726496 [2023-11-29 05:00:44,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-29 05:00:44,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-29 05:00:44,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:44,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-29 05:00:44,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,187 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 157 flow. Second operand 3 states and 152 transitions. [2023-11-29 05:00:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 201 flow [2023-11-29 05:00:44,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:00:44,194 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 142 flow [2023-11-29 05:00:44,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-11-29 05:00:44,207 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2023-11-29 05:00:44,208 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 142 flow [2023-11-29 05:00:44,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:44,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 05:00:44,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:00:44,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:44,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 13829, now seen corresponding path program 1 times [2023-11-29 05:00:44,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:44,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983579870] [2023-11-29 05:00:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:44,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:44,338 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 05:00:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983579870] [2023-11-29 05:00:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983579870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:00:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628205034] [2023-11-29 05:00:44,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:44,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:00:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:00:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:00:44,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-29 05:00:44,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:44,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-29 05:00:44,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:44,490 INFO L124 PetriNetUnfolderBase]: 211/622 cut-off events. [2023-11-29 05:00:44,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:00:44,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 622 events. 211/622 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3833 event pairs, 143 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 994. Up to 374 conditions per place. [2023-11-29 05:00:44,496 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 29 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-29 05:00:44,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 202 flow [2023-11-29 05:00:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:00:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:00:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-29 05:00:44,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2023-11-29 05:00:44,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-29 05:00:44,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-29 05:00:44,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:44,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-29 05:00:44,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,504 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 142 flow. Second operand 3 states and 146 transitions. [2023-11-29 05:00:44,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 202 flow [2023-11-29 05:00:44,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:00:44,507 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 140 flow [2023-11-29 05:00:44,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-29 05:00:44,509 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2023-11-29 05:00:44,509 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 140 flow [2023-11-29 05:00:44,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:44,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:00:44,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:00:44,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:44,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash 429088, now seen corresponding path program 1 times [2023-11-29 05:00:44,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:44,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276470645] [2023-11-29 05:00:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:44,555 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 05:00:44,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276470645] [2023-11-29 05:00:44,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276470645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:44,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:44,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:00:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817335528] [2023-11-29 05:00:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:00:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:00:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:00:44,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-29 05:00:44,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:44,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-29 05:00:44,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:44,712 INFO L124 PetriNetUnfolderBase]: 212/601 cut-off events. [2023-11-29 05:00:44,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:00:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 601 events. 212/601 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3691 event pairs, 112 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 979. Up to 305 conditions per place. [2023-11-29 05:00:44,716 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-29 05:00:44,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 270 flow [2023-11-29 05:00:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:00:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:00:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2023-11-29 05:00:44,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.688034188034188 [2023-11-29 05:00:44,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 161 transitions. [2023-11-29 05:00:44,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 161 transitions. [2023-11-29 05:00:44,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:44,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 161 transitions. [2023-11-29 05:00:44,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,723 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 140 flow. Second operand 3 states and 161 transitions. [2023-11-29 05:00:44,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 270 flow [2023-11-29 05:00:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:00:44,726 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 138 flow [2023-11-29 05:00:44,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-11-29 05:00:44,727 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2023-11-29 05:00:44,727 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 138 flow [2023-11-29 05:00:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:44,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:00:44,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:00:44,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:44,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 429089, now seen corresponding path program 1 times [2023-11-29 05:00:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:44,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547106459] [2023-11-29 05:00:44,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:44,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:44,794 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 05:00:44,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:44,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547106459] [2023-11-29 05:00:44,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547106459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:44,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:44,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:00:44,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287394773] [2023-11-29 05:00:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:00:44,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:00:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:00:44,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-29 05:00:44,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:44,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-29 05:00:44,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:44,949 INFO L124 PetriNetUnfolderBase]: 212/600 cut-off events. [2023-11-29 05:00:44,949 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 05:00:44,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 600 events. 212/600 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3682 event pairs, 112 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 989. Up to 304 conditions per place. [2023-11-29 05:00:44,953 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 46 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-11-29 05:00:44,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 266 flow [2023-11-29 05:00:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:00:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:00:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2023-11-29 05:00:44,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965811965811965 [2023-11-29 05:00:44,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2023-11-29 05:00:44,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2023-11-29 05:00:44,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:44,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2023-11-29 05:00:44,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,958 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 138 flow. Second operand 3 states and 163 transitions. [2023-11-29 05:00:44,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 266 flow [2023-11-29 05:00:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 82 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:00:44,961 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 136 flow [2023-11-29 05:00:44,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-29 05:00:44,963 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2023-11-29 05:00:44,963 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 136 flow [2023-11-29 05:00:44,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:44,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:44,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:00:44,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:44,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1148584433, now seen corresponding path program 1 times [2023-11-29 05:00:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066110618] [2023-11-29 05:00:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:45,040 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 05:00:45,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066110618] [2023-11-29 05:00:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066110618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:45,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:00:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67384661] [2023-11-29 05:00:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:00:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:00:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:00:45,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-29 05:00:45,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:45,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-29 05:00:45,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:45,249 INFO L124 PetriNetUnfolderBase]: 212/583 cut-off events. [2023-11-29 05:00:45,249 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 05:00:45,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 583 events. 212/583 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3511 event pairs, 112 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 972. Up to 304 conditions per place. [2023-11-29 05:00:45,254 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 46 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-29 05:00:45,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 264 flow [2023-11-29 05:00:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:00:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:00:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2023-11-29 05:00:45,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2023-11-29 05:00:45,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 201 transitions. [2023-11-29 05:00:45,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 201 transitions. [2023-11-29 05:00:45,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:45,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 201 transitions. [2023-11-29 05:00:45,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,259 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 136 flow. Second operand 4 states and 201 transitions. [2023-11-29 05:00:45,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 264 flow [2023-11-29 05:00:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:00:45,262 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 134 flow [2023-11-29 05:00:45,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-11-29 05:00:45,263 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2023-11-29 05:00:45,263 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 134 flow [2023-11-29 05:00:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:45,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:45,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:00:45,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:45,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -16988191, now seen corresponding path program 1 times [2023-11-29 05:00:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922905999] [2023-11-29 05:00:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:45,332 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 05:00:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:45,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922905999] [2023-11-29 05:00:45,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922905999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:45,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:45,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:00:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193281993] [2023-11-29 05:00:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:45,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:00:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:00:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:00:45,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-29 05:00:45,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:45,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-29 05:00:45,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:45,613 INFO L124 PetriNetUnfolderBase]: 235/573 cut-off events. [2023-11-29 05:00:45,613 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 05:00:45,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 573 events. 235/573 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3312 event pairs, 22 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1013. Up to 283 conditions per place. [2023-11-29 05:00:45,618 INFO L140 encePairwiseOnDemand]: 70/78 looper letters, 61 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2023-11-29 05:00:45,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 95 transitions, 328 flow [2023-11-29 05:00:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:00:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:00:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2023-11-29 05:00:45,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6256410256410256 [2023-11-29 05:00:45,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 244 transitions. [2023-11-29 05:00:45,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 244 transitions. [2023-11-29 05:00:45,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:45,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 244 transitions. [2023-11-29 05:00:45,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,624 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 134 flow. Second operand 5 states and 244 transitions. [2023-11-29 05:00:45,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 95 transitions, 328 flow [2023-11-29 05:00:45,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:00:45,626 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 135 flow [2023-11-29 05:00:45,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-11-29 05:00:45,627 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-11-29 05:00:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 135 flow [2023-11-29 05:00:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:00:45,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:45,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash -16988190, now seen corresponding path program 1 times [2023-11-29 05:00:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127363332] [2023-11-29 05:00:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:00:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127363332] [2023-11-29 05:00:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127363332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:45,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:45,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:00:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31322913] [2023-11-29 05:00:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:45,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:00:45,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:00:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:00:45,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-29 05:00:45,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:45,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:45,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-29 05:00:45,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:46,059 INFO L124 PetriNetUnfolderBase]: 234/557 cut-off events. [2023-11-29 05:00:46,059 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 05:00:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 557 events. 234/557 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3074 event pairs, 53 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 1044. Up to 283 conditions per place. [2023-11-29 05:00:46,063 INFO L140 encePairwiseOnDemand]: 71/78 looper letters, 45 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-11-29 05:00:46,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 261 flow [2023-11-29 05:00:46,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:00:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:00:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2023-11-29 05:00:46,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5820512820512821 [2023-11-29 05:00:46,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 227 transitions. [2023-11-29 05:00:46,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 227 transitions. [2023-11-29 05:00:46,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:46,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 227 transitions. [2023-11-29 05:00:46,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,068 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 135 flow. Second operand 5 states and 227 transitions. [2023-11-29 05:00:46,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 261 flow [2023-11-29 05:00:46,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 251 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:00:46,071 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 127 flow [2023-11-29 05:00:46,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-11-29 05:00:46,072 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-11-29 05:00:46,072 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 127 flow [2023-11-29 05:00:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:46,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:46,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:00:46,073 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:46,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 48343569, now seen corresponding path program 1 times [2023-11-29 05:00:46,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:46,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791983379] [2023-11-29 05:00:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:46,143 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 05:00:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791983379] [2023-11-29 05:00:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791983379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:46,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:46,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:00:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180278615] [2023-11-29 05:00:46,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:46,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:00:46,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:00:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:00:46,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 78 [2023-11-29 05:00:46,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:46,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 78 [2023-11-29 05:00:46,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:46,407 INFO L124 PetriNetUnfolderBase]: 255/620 cut-off events. [2023-11-29 05:00:46,407 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-29 05:00:46,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 620 events. 255/620 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3494 event pairs, 74 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 1153. Up to 308 conditions per place. [2023-11-29 05:00:46,412 INFO L140 encePairwiseOnDemand]: 61/78 looper letters, 73 selfloop transitions, 13 changer transitions 0/105 dead transitions. [2023-11-29 05:00:46,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 398 flow [2023-11-29 05:00:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:00:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:00:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2023-11-29 05:00:46,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2023-11-29 05:00:46,414 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 284 transitions. [2023-11-29 05:00:46,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 284 transitions. [2023-11-29 05:00:46,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:46,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 284 transitions. [2023-11-29 05:00:46,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,417 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,417 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 127 flow. Second operand 6 states and 284 transitions. [2023-11-29 05:00:46,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 398 flow [2023-11-29 05:00:46,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:00:46,421 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 230 flow [2023-11-29 05:00:46,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2023-11-29 05:00:46,422 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2023-11-29 05:00:46,422 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 230 flow [2023-11-29 05:00:46,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:46,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:46,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:00:46,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:46,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash 48343570, now seen corresponding path program 1 times [2023-11-29 05:00:46,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:46,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457515677] [2023-11-29 05:00:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:46,537 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 05:00:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457515677] [2023-11-29 05:00:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457515677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:46,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:46,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:00:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219676143] [2023-11-29 05:00:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:46,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:00:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:00:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:00:46,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 78 [2023-11-29 05:00:46,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:46,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 78 [2023-11-29 05:00:46,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:46,816 INFO L124 PetriNetUnfolderBase]: 251/568 cut-off events. [2023-11-29 05:00:46,816 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-29 05:00:46,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 568 events. 251/568 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2922 event pairs, 84 based on Foata normal form. 74/596 useless extension candidates. Maximal degree in co-relation 1244. Up to 428 conditions per place. [2023-11-29 05:00:46,820 INFO L140 encePairwiseOnDemand]: 68/78 looper letters, 46 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2023-11-29 05:00:46,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 344 flow [2023-11-29 05:00:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:00:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:00:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2023-11-29 05:00:46,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2023-11-29 05:00:46,822 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 205 transitions. [2023-11-29 05:00:46,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 205 transitions. [2023-11-29 05:00:46,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:46,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 205 transitions. [2023-11-29 05:00:46,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,825 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 230 flow. Second operand 5 states and 205 transitions. [2023-11-29 05:00:46,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 344 flow [2023-11-29 05:00:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:00:46,828 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 230 flow [2023-11-29 05:00:46,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-11-29 05:00:46,829 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2023-11-29 05:00:46,829 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 230 flow [2023-11-29 05:00:46,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:46,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:46,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:46,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:00:46,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:46,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:46,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1454507843, now seen corresponding path program 1 times [2023-11-29 05:00:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390206820] [2023-11-29 05:00:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:46,935 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 05:00:46,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390206820] [2023-11-29 05:00:46,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390206820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:46,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:46,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:00:46,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430713284] [2023-11-29 05:00:46,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:46,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:00:46,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:00:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:00:47,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2023-11-29 05:00:47,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 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 05:00:47,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:47,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2023-11-29 05:00:47,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:47,247 INFO L124 PetriNetUnfolderBase]: 258/585 cut-off events. [2023-11-29 05:00:47,247 INFO L125 PetriNetUnfolderBase]: For 271/276 co-relation queries the response was YES. [2023-11-29 05:00:47,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 585 events. 258/585 cut-off events. For 271/276 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3074 event pairs, 13 based on Foata normal form. 7/548 useless extension candidates. Maximal degree in co-relation 1331. Up to 304 conditions per place. [2023-11-29 05:00:47,250 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 74 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2023-11-29 05:00:47,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 500 flow [2023-11-29 05:00:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:00:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:00:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2023-11-29 05:00:47,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5457875457875457 [2023-11-29 05:00:47,252 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 298 transitions. [2023-11-29 05:00:47,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 298 transitions. [2023-11-29 05:00:47,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:47,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 298 transitions. [2023-11-29 05:00:47,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.57142857142857) internal successors, (298), 7 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,255 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 230 flow. Second operand 7 states and 298 transitions. [2023-11-29 05:00:47,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 500 flow [2023-11-29 05:00:47,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 486 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:00:47,260 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 272 flow [2023-11-29 05:00:47,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-11-29 05:00:47,261 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2023-11-29 05:00:47,261 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 272 flow [2023-11-29 05:00:47,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 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 05:00:47,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:47,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:47,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:00:47,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:47,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1482286627, now seen corresponding path program 2 times [2023-11-29 05:00:47,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:47,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402263586] [2023-11-29 05:00:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:47,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:47,371 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 05:00:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:47,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402263586] [2023-11-29 05:00:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402263586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:47,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:47,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:00:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537666224] [2023-11-29 05:00:47,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:47,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:00:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:00:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:00:47,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 78 [2023-11-29 05:00:47,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 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 05:00:47,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:47,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 78 [2023-11-29 05:00:47,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:47,713 INFO L124 PetriNetUnfolderBase]: 252/555 cut-off events. [2023-11-29 05:00:47,713 INFO L125 PetriNetUnfolderBase]: For 467/474 co-relation queries the response was YES. [2023-11-29 05:00:47,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 555 events. 252/555 cut-off events. For 467/474 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2791 event pairs, 69 based on Foata normal form. 21/532 useless extension candidates. Maximal degree in co-relation 1312. Up to 308 conditions per place. [2023-11-29 05:00:47,718 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 63 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-11-29 05:00:47,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 446 flow [2023-11-29 05:00:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:00:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:00:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2023-11-29 05:00:47,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363247863247863 [2023-11-29 05:00:47,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 251 transitions. [2023-11-29 05:00:47,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 251 transitions. [2023-11-29 05:00:47,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:47,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 251 transitions. [2023-11-29 05:00:47,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.833333333333336) internal successors, (251), 6 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,723 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 272 flow. Second operand 6 states and 251 transitions. [2023-11-29 05:00:47,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 446 flow [2023-11-29 05:00:47,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 403 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-11-29 05:00:47,728 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 209 flow [2023-11-29 05:00:47,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-11-29 05:00:47,728 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2023-11-29 05:00:47,729 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 209 flow [2023-11-29 05:00:47,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 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 05:00:47,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:47,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:47,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:00:47,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:47,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash -302139274, now seen corresponding path program 1 times [2023-11-29 05:00:47,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902849919] [2023-11-29 05:00:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:47,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:47,814 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 05:00:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902849919] [2023-11-29 05:00:47,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902849919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:47,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:47,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:00:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181346749] [2023-11-29 05:00:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:47,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:00:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:00:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:00:47,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-29 05:00:47,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:47,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:47,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-29 05:00:47,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:48,125 INFO L124 PetriNetUnfolderBase]: 396/858 cut-off events. [2023-11-29 05:00:48,125 INFO L125 PetriNetUnfolderBase]: For 472/474 co-relation queries the response was YES. [2023-11-29 05:00:48,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 858 events. 396/858 cut-off events. For 472/474 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4449 event pairs, 99 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 1982. Up to 461 conditions per place. [2023-11-29 05:00:48,131 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 85 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2023-11-29 05:00:48,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 118 transitions, 609 flow [2023-11-29 05:00:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:00:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:00:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 308 transitions. [2023-11-29 05:00:48,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2023-11-29 05:00:48,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 308 transitions. [2023-11-29 05:00:48,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 308 transitions. [2023-11-29 05:00:48,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:48,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 308 transitions. [2023-11-29 05:00:48,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.333333333333336) internal successors, (308), 6 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,137 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 209 flow. Second operand 6 states and 308 transitions. [2023-11-29 05:00:48,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 118 transitions, 609 flow [2023-11-29 05:00:48,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 594 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:00:48,141 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 365 flow [2023-11-29 05:00:48,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2023-11-29 05:00:48,142 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-11-29 05:00:48,142 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 365 flow [2023-11-29 05:00:48,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:48,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:48,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:00:48,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:48,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -301124362, now seen corresponding path program 1 times [2023-11-29 05:00:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:48,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723916913] [2023-11-29 05:00:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:48,287 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 05:00:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723916913] [2023-11-29 05:00:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723916913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:48,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:00:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176789668] [2023-11-29 05:00:48,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:00:48,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:00:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:00:48,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-29 05:00:48,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 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 05:00:48,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:48,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-29 05:00:48,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:48,696 INFO L124 PetriNetUnfolderBase]: 604/1306 cut-off events. [2023-11-29 05:00:48,696 INFO L125 PetriNetUnfolderBase]: For 1137/1142 co-relation queries the response was YES. [2023-11-29 05:00:48,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 1306 events. 604/1306 cut-off events. For 1137/1142 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7538 event pairs, 124 based on Foata normal form. 26/1231 useless extension candidates. Maximal degree in co-relation 3652. Up to 668 conditions per place. [2023-11-29 05:00:48,707 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 103 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2023-11-29 05:00:48,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 936 flow [2023-11-29 05:00:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:00:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:00:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 355 transitions. [2023-11-29 05:00:48,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6501831501831502 [2023-11-29 05:00:48,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 355 transitions. [2023-11-29 05:00:48,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 355 transitions. [2023-11-29 05:00:48,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:48,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 355 transitions. [2023-11-29 05:00:48,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.714285714285715) internal successors, (355), 7 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:48,713 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 365 flow. Second operand 7 states and 355 transitions. [2023-11-29 05:00:48,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 936 flow [2023-11-29 05:00:48,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 147 transitions, 936 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:00:48,721 INFO L231 Difference]: Finished difference. Result has 75 places, 94 transitions, 648 flow [2023-11-29 05:00:48,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=75, PETRI_TRANSITIONS=94} [2023-11-29 05:00:48,722 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2023-11-29 05:00:48,722 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 94 transitions, 648 flow [2023-11-29 05:00:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 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 05:00:48,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:48,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:48,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:00:48,723 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:48,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash -172470577, now seen corresponding path program 1 times [2023-11-29 05:00:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:48,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85321767] [2023-11-29 05:00:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:49,357 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 05:00:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85321767] [2023-11-29 05:00:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85321767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:49,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:49,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:00:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748826903] [2023-11-29 05:00:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:49,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:00:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:00:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:00:49,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-29 05:00:49,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 94 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:49,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:49,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-29 05:00:49,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:50,907 INFO L124 PetriNetUnfolderBase]: 828/1670 cut-off events. [2023-11-29 05:00:50,907 INFO L125 PetriNetUnfolderBase]: For 2663/2665 co-relation queries the response was YES. [2023-11-29 05:00:50,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 1670 events. 828/1670 cut-off events. For 2663/2665 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9272 event pairs, 157 based on Foata normal form. 1/1549 useless extension candidates. Maximal degree in co-relation 5398. Up to 814 conditions per place. [2023-11-29 05:00:50,922 INFO L140 encePairwiseOnDemand]: 58/78 looper letters, 156 selfloop transitions, 88 changer transitions 0/254 dead transitions. [2023-11-29 05:00:50,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 254 transitions, 1967 flow [2023-11-29 05:00:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:00:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:00:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 911 transitions. [2023-11-29 05:00:50,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561660561660562 [2023-11-29 05:00:50,927 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 911 transitions. [2023-11-29 05:00:50,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 911 transitions. [2023-11-29 05:00:50,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:50,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 911 transitions. [2023-11-29 05:00:50,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 43.38095238095238) internal successors, (911), 21 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:50,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:50,935 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:50,935 INFO L175 Difference]: Start difference. First operand has 75 places, 94 transitions, 648 flow. Second operand 21 states and 911 transitions. [2023-11-29 05:00:50,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 254 transitions, 1967 flow [2023-11-29 05:00:50,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 254 transitions, 1961 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 05:00:50,953 INFO L231 Difference]: Finished difference. Result has 103 places, 157 transitions, 1328 flow [2023-11-29 05:00:50,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1328, PETRI_PLACES=103, PETRI_TRANSITIONS=157} [2023-11-29 05:00:50,953 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 32 predicate places. [2023-11-29 05:00:50,954 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 157 transitions, 1328 flow [2023-11-29 05:00:50,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:50,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:50,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:50,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:00:50,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:50,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:50,955 INFO L85 PathProgramCache]: Analyzing trace with hash 453687815, now seen corresponding path program 2 times [2023-11-29 05:00:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:50,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364181475] [2023-11-29 05:00:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:50,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:51,542 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 05:00:51,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:51,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364181475] [2023-11-29 05:00:51,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364181475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:51,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:51,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:00:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015337563] [2023-11-29 05:00:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:51,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:00:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:00:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:00:51,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-29 05:00:51,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 157 transitions, 1328 flow. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:51,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:51,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-29 05:00:51,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:52,961 INFO L124 PetriNetUnfolderBase]: 1045/2225 cut-off events. [2023-11-29 05:00:52,961 INFO L125 PetriNetUnfolderBase]: For 6455/6459 co-relation queries the response was YES. [2023-11-29 05:00:52,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 2225 events. 1045/2225 cut-off events. For 6455/6459 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 13330 event pairs, 177 based on Foata normal form. 147/2184 useless extension candidates. Maximal degree in co-relation 8718. Up to 836 conditions per place. [2023-11-29 05:00:53,011 INFO L140 encePairwiseOnDemand]: 59/78 looper letters, 197 selfloop transitions, 114 changer transitions 0/321 dead transitions. [2023-11-29 05:00:53,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 321 transitions, 2995 flow [2023-11-29 05:00:53,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:00:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:00:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 883 transitions. [2023-11-29 05:00:53,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958164642375169 [2023-11-29 05:00:53,015 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 883 transitions. [2023-11-29 05:00:53,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 883 transitions. [2023-11-29 05:00:53,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:53,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 883 transitions. [2023-11-29 05:00:53,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 46.473684210526315) internal successors, (883), 19 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:53,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 78.0) internal successors, (1560), 20 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:53,022 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 78.0) internal successors, (1560), 20 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:53,022 INFO L175 Difference]: Start difference. First operand has 103 places, 157 transitions, 1328 flow. Second operand 19 states and 883 transitions. [2023-11-29 05:00:53,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 321 transitions, 2995 flow [2023-11-29 05:00:53,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 321 transitions, 2854 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-29 05:00:53,050 INFO L231 Difference]: Finished difference. Result has 125 places, 196 transitions, 1973 flow [2023-11-29 05:00:53,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1973, PETRI_PLACES=125, PETRI_TRANSITIONS=196} [2023-11-29 05:00:53,051 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 54 predicate places. [2023-11-29 05:00:53,052 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 196 transitions, 1973 flow [2023-11-29 05:00:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:53,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:00:53,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:53,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -765678935, now seen corresponding path program 3 times [2023-11-29 05:00:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134455949] [2023-11-29 05:00:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:53,292 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 05:00:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134455949] [2023-11-29 05:00:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134455949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:53,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:53,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:00:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516725748] [2023-11-29 05:00:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:53,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:00:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:00:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:00:53,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-29 05:00:53,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 196 transitions, 1973 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:00:53,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:53,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-29 05:00:53,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:54,748 INFO L124 PetriNetUnfolderBase]: 1495/3241 cut-off events. [2023-11-29 05:00:54,748 INFO L125 PetriNetUnfolderBase]: For 14572/14620 co-relation queries the response was YES. [2023-11-29 05:00:54,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14388 conditions, 3241 events. 1495/3241 cut-off events. For 14572/14620 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22588 event pairs, 274 based on Foata normal form. 26/2997 useless extension candidates. Maximal degree in co-relation 14339. Up to 1108 conditions per place. [2023-11-29 05:00:54,778 INFO L140 encePairwiseOnDemand]: 63/78 looper letters, 292 selfloop transitions, 118 changer transitions 0/437 dead transitions. [2023-11-29 05:00:54,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 437 transitions, 4909 flow [2023-11-29 05:00:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:00:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 05:00:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 726 transitions. [2023-11-29 05:00:54,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2023-11-29 05:00:54,782 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 726 transitions. [2023-11-29 05:00:54,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 726 transitions. [2023-11-29 05:00:54,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:54,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 726 transitions. [2023-11-29 05:00:54,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 51.857142857142854) internal successors, (726), 14 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:54,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:54,788 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:54,788 INFO L175 Difference]: Start difference. First operand has 125 places, 196 transitions, 1973 flow. Second operand 14 states and 726 transitions. [2023-11-29 05:00:54,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 437 transitions, 4909 flow [2023-11-29 05:00:54,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 437 transitions, 4825 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-29 05:00:54,876 INFO L231 Difference]: Finished difference. Result has 141 places, 269 transitions, 3174 flow [2023-11-29 05:00:54,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3174, PETRI_PLACES=141, PETRI_TRANSITIONS=269} [2023-11-29 05:00:54,877 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 70 predicate places. [2023-11-29 05:00:54,877 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 269 transitions, 3174 flow [2023-11-29 05:00:54,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:00:54,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:54,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:54,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:00:54,878 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:54,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash 385786263, now seen corresponding path program 4 times [2023-11-29 05:00:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:54,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540171387] [2023-11-29 05:00:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:54,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:55,106 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 05:00:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540171387] [2023-11-29 05:00:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540171387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:00:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475451360] [2023-11-29 05:00:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:55,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:00:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:00:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:00:55,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-29 05:00:55,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 269 transitions, 3174 flow. Second operand has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 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 05:00:55,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:55,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-29 05:00:55,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:56,181 INFO L124 PetriNetUnfolderBase]: 1874/4046 cut-off events. [2023-11-29 05:00:56,182 INFO L125 PetriNetUnfolderBase]: For 26939/27004 co-relation queries the response was YES. [2023-11-29 05:00:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20270 conditions, 4046 events. 1874/4046 cut-off events. For 26939/27004 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 29235 event pairs, 196 based on Foata normal form. 59/3791 useless extension candidates. Maximal degree in co-relation 20211. Up to 1280 conditions per place. [2023-11-29 05:00:56,220 INFO L140 encePairwiseOnDemand]: 66/78 looper letters, 370 selfloop transitions, 88 changer transitions 0/483 dead transitions. [2023-11-29 05:00:56,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 483 transitions, 6237 flow [2023-11-29 05:00:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:00:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:00:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 421 transitions. [2023-11-29 05:00:56,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746794871794872 [2023-11-29 05:00:56,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 421 transitions. [2023-11-29 05:00:56,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 421 transitions. [2023-11-29 05:00:56,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:56,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 421 transitions. [2023-11-29 05:00:56,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 52.625) internal successors, (421), 8 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:56,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:56,225 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:56,225 INFO L175 Difference]: Start difference. First operand has 141 places, 269 transitions, 3174 flow. Second operand 8 states and 421 transitions. [2023-11-29 05:00:56,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 483 transitions, 6237 flow [2023-11-29 05:00:56,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 483 transitions, 6139 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-11-29 05:00:56,325 INFO L231 Difference]: Finished difference. Result has 151 places, 314 transitions, 3851 flow [2023-11-29 05:00:56,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3851, PETRI_PLACES=151, PETRI_TRANSITIONS=314} [2023-11-29 05:00:56,327 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 80 predicate places. [2023-11-29 05:00:56,327 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 314 transitions, 3851 flow [2023-11-29 05:00:56,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 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 05:00:56,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:56,327 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] [2023-11-29 05:00:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:00:56,328 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:56,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1063112209, now seen corresponding path program 1 times [2023-11-29 05:00:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:56,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79739641] [2023-11-29 05:00:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:56,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:56,438 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 05:00:56,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:56,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79739641] [2023-11-29 05:00:56,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79739641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:56,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:56,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:00:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624520210] [2023-11-29 05:00:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:56,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:00:56,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:00:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:00:56,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-29 05:00:56,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 314 transitions, 3851 flow. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 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 05:00:56,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:56,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-29 05:00:56,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:57,093 INFO L124 PetriNetUnfolderBase]: 977/2167 cut-off events. [2023-11-29 05:00:57,093 INFO L125 PetriNetUnfolderBase]: For 15872/15918 co-relation queries the response was YES. [2023-11-29 05:00:57,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11651 conditions, 2167 events. 977/2167 cut-off events. For 15872/15918 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13775 event pairs, 307 based on Foata normal form. 33/2032 useless extension candidates. Maximal degree in co-relation 11587. Up to 1503 conditions per place. [2023-11-29 05:00:57,109 INFO L140 encePairwiseOnDemand]: 71/78 looper letters, 181 selfloop transitions, 22 changer transitions 17/242 dead transitions. [2023-11-29 05:00:57,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 242 transitions, 2908 flow [2023-11-29 05:00:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:00:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:00:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2023-11-29 05:00:57,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391941391941391 [2023-11-29 05:00:57,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 349 transitions. [2023-11-29 05:00:57,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 349 transitions. [2023-11-29 05:00:57,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:57,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 349 transitions. [2023-11-29 05:00:57,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.857142857142854) internal successors, (349), 7 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:57,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:57,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:57,115 INFO L175 Difference]: Start difference. First operand has 151 places, 314 transitions, 3851 flow. Second operand 7 states and 349 transitions. [2023-11-29 05:00:57,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 242 transitions, 2908 flow [2023-11-29 05:00:57,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 242 transitions, 2683 flow, removed 63 selfloop flow, removed 11 redundant places. [2023-11-29 05:00:57,152 INFO L231 Difference]: Finished difference. Result has 144 places, 192 transitions, 1920 flow [2023-11-29 05:00:57,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1920, PETRI_PLACES=144, PETRI_TRANSITIONS=192} [2023-11-29 05:00:57,153 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 73 predicate places. [2023-11-29 05:00:57,153 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 192 transitions, 1920 flow [2023-11-29 05:00:57,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 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 05:00:57,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:57,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:57,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:00:57,153 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:57,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1871380519, now seen corresponding path program 5 times [2023-11-29 05:00:57,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:57,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897163836] [2023-11-29 05:00:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:57,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:57,397 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 05:00:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897163836] [2023-11-29 05:00:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897163836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:00:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452809392] [2023-11-29 05:00:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:00:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:00:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:00:57,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-29 05:00:57,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 192 transitions, 1920 flow. Second operand has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 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 05:00:57,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:57,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-29 05:00:57,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:00:58,212 INFO L124 PetriNetUnfolderBase]: 1161/2494 cut-off events. [2023-11-29 05:00:58,212 INFO L125 PetriNetUnfolderBase]: For 16710/16762 co-relation queries the response was YES. [2023-11-29 05:00:58,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12759 conditions, 2494 events. 1161/2494 cut-off events. For 16710/16762 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15893 event pairs, 263 based on Foata normal form. 44/2362 useless extension candidates. Maximal degree in co-relation 12699. Up to 910 conditions per place. [2023-11-29 05:00:58,230 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 258 selfloop transitions, 71 changer transitions 20/363 dead transitions. [2023-11-29 05:00:58,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 363 transitions, 4221 flow [2023-11-29 05:00:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:00:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:00:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 464 transitions. [2023-11-29 05:00:58,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6609686609686609 [2023-11-29 05:00:58,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 464 transitions. [2023-11-29 05:00:58,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 464 transitions. [2023-11-29 05:00:58,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:00:58,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 464 transitions. [2023-11-29 05:00:58,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:58,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:58,234 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:00:58,234 INFO L175 Difference]: Start difference. First operand has 144 places, 192 transitions, 1920 flow. Second operand 9 states and 464 transitions. [2023-11-29 05:00:58,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 363 transitions, 4221 flow [2023-11-29 05:00:58,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 363 transitions, 4113 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-11-29 05:00:58,271 INFO L231 Difference]: Finished difference. Result has 155 places, 212 transitions, 2380 flow [2023-11-29 05:00:58,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2380, PETRI_PLACES=155, PETRI_TRANSITIONS=212} [2023-11-29 05:00:58,272 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 84 predicate places. [2023-11-29 05:00:58,272 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 212 transitions, 2380 flow [2023-11-29 05:00:58,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 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 05:00:58,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:00:58,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:58,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:00:58,273 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:00:58,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1155971479, now seen corresponding path program 6 times [2023-11-29 05:00:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:00:58,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515514033] [2023-11-29 05:00:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:58,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:00:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:58,493 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 05:00:58,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:00:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515514033] [2023-11-29 05:00:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515514033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:00:58,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:00:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:00:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013227486] [2023-11-29 05:00:58,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:00:58,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:00:58,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:00:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:00:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:00:58,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-29 05:00:58,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 212 transitions, 2380 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:00:58,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:00:58,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-29 05:00:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:00,066 INFO L124 PetriNetUnfolderBase]: 1997/4285 cut-off events. [2023-11-29 05:01:00,066 INFO L125 PetriNetUnfolderBase]: For 33494/33574 co-relation queries the response was YES. [2023-11-29 05:01:00,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23221 conditions, 4285 events. 1997/4285 cut-off events. For 33494/33574 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 28476 event pairs, 503 based on Foata normal form. 44/4006 useless extension candidates. Maximal degree in co-relation 23156. Up to 1257 conditions per place. [2023-11-29 05:01:00,094 INFO L140 encePairwiseOnDemand]: 63/78 looper letters, 338 selfloop transitions, 149 changer transitions 10/513 dead transitions. [2023-11-29 05:01:00,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 513 transitions, 6622 flow [2023-11-29 05:01:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:01:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:01:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 839 transitions. [2023-11-29 05:01:00,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6327300150829562 [2023-11-29 05:01:00,097 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 839 transitions. [2023-11-29 05:01:00,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 839 transitions. [2023-11-29 05:01:00,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:00,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 839 transitions. [2023-11-29 05:01:00,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 49.35294117647059) internal successors, (839), 17 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:00,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 78.0) internal successors, (1404), 18 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:00,101 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 78.0) internal successors, (1404), 18 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:00,101 INFO L175 Difference]: Start difference. First operand has 155 places, 212 transitions, 2380 flow. Second operand 17 states and 839 transitions. [2023-11-29 05:01:00,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 513 transitions, 6622 flow [2023-11-29 05:01:00,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 513 transitions, 6362 flow, removed 97 selfloop flow, removed 7 redundant places. [2023-11-29 05:01:00,170 INFO L231 Difference]: Finished difference. Result has 173 places, 296 transitions, 3954 flow [2023-11-29 05:01:00,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3954, PETRI_PLACES=173, PETRI_TRANSITIONS=296} [2023-11-29 05:01:00,171 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 102 predicate places. [2023-11-29 05:01:00,171 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 296 transitions, 3954 flow [2023-11-29 05:01:00,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:01:00,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:00,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:00,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:01:00,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:00,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -907058405, now seen corresponding path program 7 times [2023-11-29 05:01:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:00,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214825485] [2023-11-29 05:01:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:00,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:00,441 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 05:01:00,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:00,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214825485] [2023-11-29 05:01:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214825485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:00,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:00,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:01:00,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067402340] [2023-11-29 05:01:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:00,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:01:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:01:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:01:00,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-29 05:01:00,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 296 transitions, 3954 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:01:00,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:00,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-29 05:01:00,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:02,086 INFO L124 PetriNetUnfolderBase]: 2246/4746 cut-off events. [2023-11-29 05:01:02,086 INFO L125 PetriNetUnfolderBase]: For 46756/46860 co-relation queries the response was YES. [2023-11-29 05:01:02,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27910 conditions, 4746 events. 2246/4746 cut-off events. For 46756/46860 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 32528 event pairs, 476 based on Foata normal form. 46/4434 useless extension candidates. Maximal degree in co-relation 27836. Up to 3535 conditions per place. [2023-11-29 05:01:02,129 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 341 selfloop transitions, 76 changer transitions 3/436 dead transitions. [2023-11-29 05:01:02,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 436 transitions, 6479 flow [2023-11-29 05:01:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:01:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 05:01:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 665 transitions. [2023-11-29 05:01:02,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2023-11-29 05:01:02,131 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 665 transitions. [2023-11-29 05:01:02,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 665 transitions. [2023-11-29 05:01:02,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:02,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 665 transitions. [2023-11-29 05:01:02,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 47.5) internal successors, (665), 14 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:02,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:02,134 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 78.0) internal successors, (1170), 15 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:02,134 INFO L175 Difference]: Start difference. First operand has 173 places, 296 transitions, 3954 flow. Second operand 14 states and 665 transitions. [2023-11-29 05:01:02,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 436 transitions, 6479 flow [2023-11-29 05:01:02,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 436 transitions, 6062 flow, removed 184 selfloop flow, removed 9 redundant places. [2023-11-29 05:01:02,265 INFO L231 Difference]: Finished difference. Result has 181 places, 334 transitions, 4515 flow [2023-11-29 05:01:02,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4515, PETRI_PLACES=181, PETRI_TRANSITIONS=334} [2023-11-29 05:01:02,265 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 110 predicate places. [2023-11-29 05:01:02,265 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 334 transitions, 4515 flow [2023-11-29 05:01:02,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:01:02,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:02,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:02,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:01:02,266 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:02,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash 653859303, now seen corresponding path program 8 times [2023-11-29 05:01:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886255555] [2023-11-29 05:01:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:02,466 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 05:01:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886255555] [2023-11-29 05:01:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886255555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:02,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:02,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:01:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035326382] [2023-11-29 05:01:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:02,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:01:02,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:02,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:01:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:01:02,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-29 05:01:02,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 334 transitions, 4515 flow. Second operand has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 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 05:01:02,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:02,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-29 05:01:02,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:04,176 INFO L124 PetriNetUnfolderBase]: 2859/6258 cut-off events. [2023-11-29 05:01:04,176 INFO L125 PetriNetUnfolderBase]: For 62881/63004 co-relation queries the response was YES. [2023-11-29 05:01:04,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35735 conditions, 6258 events. 2859/6258 cut-off events. For 62881/63004 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 45788 event pairs, 792 based on Foata normal form. 396/6135 useless extension candidates. Maximal degree in co-relation 35659. Up to 1939 conditions per place. [2023-11-29 05:01:04,218 INFO L140 encePairwiseOnDemand]: 61/78 looper letters, 381 selfloop transitions, 136 changer transitions 79/610 dead transitions. [2023-11-29 05:01:04,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 610 transitions, 9050 flow [2023-11-29 05:01:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:01:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:01:04,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 489 transitions. [2023-11-29 05:01:04,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6965811965811965 [2023-11-29 05:01:04,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 489 transitions. [2023-11-29 05:01:04,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 489 transitions. [2023-11-29 05:01:04,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:04,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 489 transitions. [2023-11-29 05:01:04,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 54.333333333333336) internal successors, (489), 9 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:04,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:04,222 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:04,223 INFO L175 Difference]: Start difference. First operand has 181 places, 334 transitions, 4515 flow. Second operand 9 states and 489 transitions. [2023-11-29 05:01:04,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 610 transitions, 9050 flow [2023-11-29 05:01:04,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 610 transitions, 8791 flow, removed 99 selfloop flow, removed 6 redundant places. [2023-11-29 05:01:04,375 INFO L231 Difference]: Finished difference. Result has 187 places, 368 transitions, 5369 flow [2023-11-29 05:01:04,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=4323, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5369, PETRI_PLACES=187, PETRI_TRANSITIONS=368} [2023-11-29 05:01:04,376 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 116 predicate places. [2023-11-29 05:01:04,377 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 368 transitions, 5369 flow [2023-11-29 05:01:04,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 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 05:01:04,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:04,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:04,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:01:04,377 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:04,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2001319517, now seen corresponding path program 9 times [2023-11-29 05:01:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562844919] [2023-11-29 05:01:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:04,885 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 05:01:04,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:04,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562844919] [2023-11-29 05:01:04,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562844919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:04,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:04,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:01:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211382402] [2023-11-29 05:01:04,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:04,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:01:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:01:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:01:05,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-29 05:01:05,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 368 transitions, 5369 flow. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:05,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:05,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-29 05:01:05,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:06,949 INFO L124 PetriNetUnfolderBase]: 2941/6209 cut-off events. [2023-11-29 05:01:06,949 INFO L125 PetriNetUnfolderBase]: For 69444/69488 co-relation queries the response was YES. [2023-11-29 05:01:06,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38733 conditions, 6209 events. 2941/6209 cut-off events. For 69444/69488 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 43306 event pairs, 1077 based on Foata normal form. 21/5733 useless extension candidates. Maximal degree in co-relation 38653. Up to 5063 conditions per place. [2023-11-29 05:01:06,994 INFO L140 encePairwiseOnDemand]: 65/78 looper letters, 359 selfloop transitions, 31 changer transitions 30/430 dead transitions. [2023-11-29 05:01:06,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 430 transitions, 6838 flow [2023-11-29 05:01:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:01:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 05:01:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 512 transitions. [2023-11-29 05:01:06,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2023-11-29 05:01:06,996 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 512 transitions. [2023-11-29 05:01:06,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 512 transitions. [2023-11-29 05:01:06,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:06,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 512 transitions. [2023-11-29 05:01:06,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 42.666666666666664) internal successors, (512), 12 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:06,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:06,999 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 78.0) internal successors, (1014), 13 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:07,000 INFO L175 Difference]: Start difference. First operand has 187 places, 368 transitions, 5369 flow. Second operand 12 states and 512 transitions. [2023-11-29 05:01:07,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 430 transitions, 6838 flow [2023-11-29 05:01:07,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 430 transitions, 6663 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-11-29 05:01:07,229 INFO L231 Difference]: Finished difference. Result has 202 places, 367 transitions, 5311 flow [2023-11-29 05:01:07,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5311, PETRI_PLACES=202, PETRI_TRANSITIONS=367} [2023-11-29 05:01:07,230 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 131 predicate places. [2023-11-29 05:01:07,230 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 367 transitions, 5311 flow [2023-11-29 05:01:07,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:07,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:07,230 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] [2023-11-29 05:01:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:01:07,230 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -439551941, now seen corresponding path program 10 times [2023-11-29 05:01:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106968941] [2023-11-29 05:01:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:07,820 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 05:01:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106968941] [2023-11-29 05:01:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106968941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:01:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417803776] [2023-11-29 05:01:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:01:07,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:01:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:01:08,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-29 05:01:08,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 367 transitions, 5311 flow. Second operand has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:08,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:08,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-29 05:01:08,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:10,262 INFO L124 PetriNetUnfolderBase]: 2923/6162 cut-off events. [2023-11-29 05:01:10,262 INFO L125 PetriNetUnfolderBase]: For 68287/68332 co-relation queries the response was YES. [2023-11-29 05:01:10,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38739 conditions, 6162 events. 2923/6162 cut-off events. For 68287/68332 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 43013 event pairs, 1079 based on Foata normal form. 18/5683 useless extension candidates. Maximal degree in co-relation 38659. Up to 5064 conditions per place. [2023-11-29 05:01:10,311 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 358 selfloop transitions, 37 changer transitions 9/414 dead transitions. [2023-11-29 05:01:10,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 414 transitions, 6621 flow [2023-11-29 05:01:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:01:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 05:01:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 541 transitions. [2023-11-29 05:01:10,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335305719921104 [2023-11-29 05:01:10,313 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 541 transitions. [2023-11-29 05:01:10,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 541 transitions. [2023-11-29 05:01:10,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:10,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 541 transitions. [2023-11-29 05:01:10,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.61538461538461) internal successors, (541), 13 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:10,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:10,316 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:10,316 INFO L175 Difference]: Start difference. First operand has 202 places, 367 transitions, 5311 flow. Second operand 13 states and 541 transitions. [2023-11-29 05:01:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 414 transitions, 6621 flow [2023-11-29 05:01:10,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 414 transitions, 6553 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-11-29 05:01:10,494 INFO L231 Difference]: Finished difference. Result has 202 places, 369 transitions, 5366 flow [2023-11-29 05:01:10,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5247, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5366, PETRI_PLACES=202, PETRI_TRANSITIONS=369} [2023-11-29 05:01:10,495 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 131 predicate places. [2023-11-29 05:01:10,495 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 369 transitions, 5366 flow [2023-11-29 05:01:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.333333333333336) internal successors, (424), 12 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:10,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:10,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:10,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:01:10,496 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:10,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 591946793, now seen corresponding path program 11 times [2023-11-29 05:01:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833134243] [2023-11-29 05:01:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:10,962 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 05:01:10,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833134243] [2023-11-29 05:01:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833134243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:10,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:10,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:01:10,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604493795] [2023-11-29 05:01:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:10,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:01:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:01:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:01:11,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2023-11-29 05:01:11,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 369 transitions, 5366 flow. Second operand has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:11,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:11,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2023-11-29 05:01:11,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:13,155 INFO L124 PetriNetUnfolderBase]: 2869/6066 cut-off events. [2023-11-29 05:01:13,155 INFO L125 PetriNetUnfolderBase]: For 66978/67023 co-relation queries the response was YES. [2023-11-29 05:01:13,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38069 conditions, 6066 events. 2869/6066 cut-off events. For 66978/67023 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 42249 event pairs, 1102 based on Foata normal form. 21/5592 useless extension candidates. Maximal degree in co-relation 37983. Up to 5028 conditions per place. [2023-11-29 05:01:13,201 INFO L140 encePairwiseOnDemand]: 65/78 looper letters, 344 selfloop transitions, 20 changer transitions 23/397 dead transitions. [2023-11-29 05:01:13,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 397 transitions, 6384 flow [2023-11-29 05:01:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:01:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:01:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 463 transitions. [2023-11-29 05:01:13,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396270396270396 [2023-11-29 05:01:13,203 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 463 transitions. [2023-11-29 05:01:13,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 463 transitions. [2023-11-29 05:01:13,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:13,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 463 transitions. [2023-11-29 05:01:13,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 42.09090909090909) internal successors, (463), 11 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:13,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:13,205 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 78.0) internal successors, (936), 12 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:13,205 INFO L175 Difference]: Start difference. First operand has 202 places, 369 transitions, 5366 flow. Second operand 11 states and 463 transitions. [2023-11-29 05:01:13,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 397 transitions, 6384 flow [2023-11-29 05:01:13,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 397 transitions, 6291 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-11-29 05:01:13,372 INFO L231 Difference]: Finished difference. Result has 197 places, 346 transitions, 5000 flow [2023-11-29 05:01:13,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5000, PETRI_PLACES=197, PETRI_TRANSITIONS=346} [2023-11-29 05:01:13,373 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 126 predicate places. [2023-11-29 05:01:13,373 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 346 transitions, 5000 flow [2023-11-29 05:01:13,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.45454545454545) internal successors, (390), 11 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:13,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:13,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:01:13,373 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:13,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1174139769, now seen corresponding path program 12 times [2023-11-29 05:01:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838740310] [2023-11-29 05:01:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:13,690 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 05:01:13,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:13,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838740310] [2023-11-29 05:01:13,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838740310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:01:13,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:01:13,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:01:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955188288] [2023-11-29 05:01:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:01:13,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:01:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:01:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:01:14,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 78 [2023-11-29 05:01:14,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 346 transitions, 5000 flow. Second operand has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:01:14,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:14,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 78 [2023-11-29 05:01:14,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:15,815 INFO L124 PetriNetUnfolderBase]: 2682/5837 cut-off events. [2023-11-29 05:01:15,815 INFO L125 PetriNetUnfolderBase]: For 65666/65772 co-relation queries the response was YES. [2023-11-29 05:01:15,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35958 conditions, 5837 events. 2682/5837 cut-off events. For 65666/65772 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 42808 event pairs, 1003 based on Foata normal form. 30/5340 useless extension candidates. Maximal degree in co-relation 35873. Up to 4855 conditions per place. [2023-11-29 05:01:15,864 INFO L140 encePairwiseOnDemand]: 64/78 looper letters, 368 selfloop transitions, 38 changer transitions 4/425 dead transitions. [2023-11-29 05:01:15,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 425 transitions, 6761 flow [2023-11-29 05:01:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:01:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 05:01:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 600 transitions. [2023-11-29 05:01:15,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591715976331361 [2023-11-29 05:01:15,866 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 600 transitions. [2023-11-29 05:01:15,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 600 transitions. [2023-11-29 05:01:15,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:15,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 600 transitions. [2023-11-29 05:01:15,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 46.15384615384615) internal successors, (600), 13 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:15,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:15,869 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 78.0) internal successors, (1092), 14 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:15,869 INFO L175 Difference]: Start difference. First operand has 197 places, 346 transitions, 5000 flow. Second operand 13 states and 600 transitions. [2023-11-29 05:01:15,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 425 transitions, 6761 flow [2023-11-29 05:01:16,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 425 transitions, 6605 flow, removed 28 selfloop flow, removed 20 redundant places. [2023-11-29 05:01:16,016 INFO L231 Difference]: Finished difference. Result has 187 places, 367 transitions, 5410 flow [2023-11-29 05:01:16,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5410, PETRI_PLACES=187, PETRI_TRANSITIONS=367} [2023-11-29 05:01:16,016 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 116 predicate places. [2023-11-29 05:01:16,017 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 367 transitions, 5410 flow [2023-11-29 05:01:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 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 05:01:16,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:16,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:01:16,017 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1644638438, now seen corresponding path program 1 times [2023-11-29 05:01:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158949763] [2023-11-29 05:01:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158949763] [2023-11-29 05:01:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158949763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:01:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096687215] [2023-11-29 05:01:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:16,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:16,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:16,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:16,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:01:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:16,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 05:01:16,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:16,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:01:16,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:01:17,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:01:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:17,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:01:17,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-11-29 05:01:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:17,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096687215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:01:17,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:01:17,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 32 [2023-11-29 05:01:17,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647373690] [2023-11-29 05:01:17,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:01:17,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:01:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:01:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:01:19,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 78 [2023-11-29 05:01:19,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 367 transitions, 5410 flow. Second operand has 33 states, 33 states have (on average 38.0) internal successors, (1254), 33 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:19,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:19,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 78 [2023-11-29 05:01:19,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:01:25,578 INFO L124 PetriNetUnfolderBase]: 5225/11129 cut-off events. [2023-11-29 05:01:25,578 INFO L125 PetriNetUnfolderBase]: For 110404/110584 co-relation queries the response was YES. [2023-11-29 05:01:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65218 conditions, 11129 events. 5225/11129 cut-off events. For 110404/110584 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 89080 event pairs, 1450 based on Foata normal form. 193/10381 useless extension candidates. Maximal degree in co-relation 65139. Up to 4658 conditions per place. [2023-11-29 05:01:25,693 INFO L140 encePairwiseOnDemand]: 60/78 looper letters, 781 selfloop transitions, 470 changer transitions 9/1294 dead transitions. [2023-11-29 05:01:25,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1294 transitions, 18688 flow [2023-11-29 05:01:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 05:01:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-11-29 05:01:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3109 transitions. [2023-11-29 05:01:25,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776662950575994 [2023-11-29 05:01:25,699 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 3109 transitions. [2023-11-29 05:01:25,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 3109 transitions. [2023-11-29 05:01:25,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:01:25,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 3109 transitions. [2023-11-29 05:01:25,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 45.05797101449275) internal successors, (3109), 69 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:25,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 78.0) internal successors, (5460), 70 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:25,713 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 78.0) internal successors, (5460), 70 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:25,713 INFO L175 Difference]: Start difference. First operand has 187 places, 367 transitions, 5410 flow. Second operand 69 states and 3109 transitions. [2023-11-29 05:01:25,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1294 transitions, 18688 flow [2023-11-29 05:01:26,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1294 transitions, 18456 flow, removed 106 selfloop flow, removed 4 redundant places. [2023-11-29 05:01:26,022 INFO L231 Difference]: Finished difference. Result has 288 places, 824 transitions, 13667 flow [2023-11-29 05:01:26,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=5238, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=13667, PETRI_PLACES=288, PETRI_TRANSITIONS=824} [2023-11-29 05:01:26,023 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 217 predicate places. [2023-11-29 05:01:26,023 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 824 transitions, 13667 flow [2023-11-29 05:01:26,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 38.0) internal successors, (1254), 33 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:26,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:01:26,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:01:26,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:01:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:01:26,224 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:01:26,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:01:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2100682870, now seen corresponding path program 1 times [2023-11-29 05:01:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:01:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981707579] [2023-11-29 05:01:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:01:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:26,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:01:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981707579] [2023-11-29 05:01:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981707579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:01:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117771007] [2023-11-29 05:01:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:01:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:01:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:01:26,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:01:26,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:01:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:01:26,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 05:01:26,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:01:26,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:01:27,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 05:01:27,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 05:01:27,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:01:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:27,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:01:27,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-29 05:01:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:01:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117771007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:01:27,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:01:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 33 [2023-11-29 05:01:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090777902] [2023-11-29 05:01:27,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:01:27,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 05:01:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:01:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 05:01:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 05:01:31,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:35,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:41,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:45,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:50,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:54,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:59,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:01:59,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 78 [2023-11-29 05:01:59,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 824 transitions, 13667 flow. Second operand has 34 states, 34 states have (on average 32.94117647058823) internal successors, (1120), 34 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:01:59,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:01:59,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 78 [2023-11-29 05:01:59,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:02:14,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:19,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:23,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:28,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:33,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:37,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:41,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:45,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:49,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:54,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:02:57,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:01,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:05,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:09,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:14,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:19,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:23,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:25,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:29,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:31,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:35,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:03:38,484 INFO L124 PetriNetUnfolderBase]: 9473/20277 cut-off events. [2023-11-29 05:03:38,484 INFO L125 PetriNetUnfolderBase]: For 323615/323957 co-relation queries the response was YES. [2023-11-29 05:03:38,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147224 conditions, 20277 events. 9473/20277 cut-off events. For 323615/323957 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 170160 event pairs, 2409 based on Foata normal form. 133/18692 useless extension candidates. Maximal degree in co-relation 147107. Up to 5491 conditions per place. [2023-11-29 05:03:38,717 INFO L140 encePairwiseOnDemand]: 63/78 looper letters, 1002 selfloop transitions, 1124 changer transitions 4/2157 dead transitions. [2023-11-29 05:03:38,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 2157 transitions, 38179 flow [2023-11-29 05:03:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 05:03:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-29 05:03:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 2381 transitions. [2023-11-29 05:03:38,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173837461973055 [2023-11-29 05:03:38,720 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 2381 transitions. [2023-11-29 05:03:38,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 2381 transitions. [2023-11-29 05:03:38,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:38,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 2381 transitions. [2023-11-29 05:03:38,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 40.355932203389834) internal successors, (2381), 59 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:38,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 78.0) internal successors, (4680), 60 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:38,729 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 78.0) internal successors, (4680), 60 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:38,729 INFO L175 Difference]: Start difference. First operand has 288 places, 824 transitions, 13667 flow. Second operand 59 states and 2381 transitions. [2023-11-29 05:03:38,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 2157 transitions, 38179 flow [2023-11-29 05:03:40,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 2157 transitions, 37401 flow, removed 373 selfloop flow, removed 13 redundant places. [2023-11-29 05:03:40,199 INFO L231 Difference]: Finished difference. Result has 363 places, 1581 transitions, 30782 flow [2023-11-29 05:03:40,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=12797, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=30782, PETRI_PLACES=363, PETRI_TRANSITIONS=1581} [2023-11-29 05:03:40,200 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 292 predicate places. [2023-11-29 05:03:40,200 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 1581 transitions, 30782 flow [2023-11-29 05:03:40,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 32.94117647058823) internal successors, (1120), 34 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:40,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:40,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:40,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:03:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:03:40,401 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:03:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -731110426, now seen corresponding path program 2 times [2023-11-29 05:03:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183187957] [2023-11-29 05:03:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183187957] [2023-11-29 05:03:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183187957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900043452] [2023-11-29 05:03:40,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:03:40,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:40,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:40,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:40,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:03:40,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:03:40,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:03:40,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:03:40,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:41,041 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2023-11-29 05:03:41,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 40 [2023-11-29 05:03:41,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 05:03:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:03:41,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900043452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:41,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:41,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-29 05:03:41,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123378688] [2023-11-29 05:03:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:03:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:03:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:03:41,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 78 [2023-11-29 05:03:41,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 1581 transitions, 30782 flow. Second operand has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:41,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:41,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 78 [2023-11-29 05:03:41,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:56,356 INFO L124 PetriNetUnfolderBase]: 10714/23584 cut-off events. [2023-11-29 05:03:56,356 INFO L125 PetriNetUnfolderBase]: For 497133/497798 co-relation queries the response was YES. [2023-11-29 05:03:56,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188402 conditions, 23584 events. 10714/23584 cut-off events. For 497133/497798 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 212540 event pairs, 1739 based on Foata normal form. 343/21938 useless extension candidates. Maximal degree in co-relation 188250. Up to 8438 conditions per place. [2023-11-29 05:03:56,714 INFO L140 encePairwiseOnDemand]: 68/78 looper letters, 1226 selfloop transitions, 1166 changer transitions 54/2502 dead transitions. [2023-11-29 05:03:56,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 2502 transitions, 52809 flow [2023-11-29 05:03:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:03:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:03:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 399 transitions. [2023-11-29 05:03:56,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6394230769230769 [2023-11-29 05:03:56,715 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 399 transitions. [2023-11-29 05:03:56,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 399 transitions. [2023-11-29 05:03:56,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:56,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 399 transitions. [2023-11-29 05:03:56,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 49.875) internal successors, (399), 8 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:56,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:56,717 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 78.0) internal successors, (702), 9 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:56,717 INFO L175 Difference]: Start difference. First operand has 363 places, 1581 transitions, 30782 flow. Second operand 8 states and 399 transitions. [2023-11-29 05:03:56,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 2502 transitions, 52809 flow [2023-11-29 05:04:00,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 2502 transitions, 50120 flow, removed 1327 selfloop flow, removed 10 redundant places. [2023-11-29 05:04:00,430 INFO L231 Difference]: Finished difference. Result has 364 places, 2075 transitions, 42130 flow [2023-11-29 05:04:00,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=28875, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=716, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=42130, PETRI_PLACES=364, PETRI_TRANSITIONS=2075} [2023-11-29 05:04:00,431 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 293 predicate places. [2023-11-29 05:04:00,432 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 2075 transitions, 42130 flow [2023-11-29 05:04:00,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:00,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:04:00,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:04:00,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:04:00,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:04:00,633 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:04:00,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:04:00,633 INFO L85 PathProgramCache]: Analyzing trace with hash -713743220, now seen corresponding path program 3 times [2023-11-29 05:04:00,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:04:00,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443174845] [2023-11-29 05:04:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:04:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:04:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:04:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:04:01,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443174845] [2023-11-29 05:04:01,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443174845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:04:01,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:04:01,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:04:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302581063] [2023-11-29 05:04:01,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:04:01,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:04:01,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:04:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:04:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:04:01,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-29 05:04:01,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 2075 transitions, 42130 flow. Second operand has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:01,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:04:01,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-29 05:04:01,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:04:29,820 INFO L124 PetriNetUnfolderBase]: 15901/33257 cut-off events. [2023-11-29 05:04:29,820 INFO L125 PetriNetUnfolderBase]: For 736663/736715 co-relation queries the response was YES. [2023-11-29 05:04:30,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275018 conditions, 33257 events. 15901/33257 cut-off events. For 736663/736715 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 299611 event pairs, 2535 based on Foata normal form. 188/30800 useless extension candidates. Maximal degree in co-relation 274864. Up to 9576 conditions per place. [2023-11-29 05:04:30,382 INFO L140 encePairwiseOnDemand]: 59/78 looper letters, 1790 selfloop transitions, 1676 changer transitions 57/3535 dead transitions. [2023-11-29 05:04:30,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 3535 transitions, 77602 flow [2023-11-29 05:04:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 05:04:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 05:04:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1282 transitions. [2023-11-29 05:04:30,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.586996336996337 [2023-11-29 05:04:30,384 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1282 transitions. [2023-11-29 05:04:30,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1282 transitions. [2023-11-29 05:04:30,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:04:30,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1282 transitions. [2023-11-29 05:04:30,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 45.785714285714285) internal successors, (1282), 28 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:30,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 78.0) internal successors, (2262), 29 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:30,390 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 78.0) internal successors, (2262), 29 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:30,390 INFO L175 Difference]: Start difference. First operand has 364 places, 2075 transitions, 42130 flow. Second operand 28 states and 1282 transitions. [2023-11-29 05:04:30,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 3535 transitions, 77602 flow [2023-11-29 05:04:35,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 3535 transitions, 76998 flow, removed 200 selfloop flow, removed 1 redundant places. [2023-11-29 05:04:35,844 INFO L231 Difference]: Finished difference. Result has 411 places, 3054 transitions, 68942 flow [2023-11-29 05:04:35,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=41769, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=755, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=971, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=68942, PETRI_PLACES=411, PETRI_TRANSITIONS=3054} [2023-11-29 05:04:35,846 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 340 predicate places. [2023-11-29 05:04:35,846 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 3054 transitions, 68942 flow [2023-11-29 05:04:35,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:35,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:04:35,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:04:35,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:04:35,846 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:04:35,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:04:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1806309426, now seen corresponding path program 4 times [2023-11-29 05:04:35,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:04:35,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689610011] [2023-11-29 05:04:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:35,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:04:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:04:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:04:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:04:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689610011] [2023-11-29 05:04:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689610011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:04:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421626135] [2023-11-29 05:04:36,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:04:36,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:04:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:04:36,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:04:36,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:04:36,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:04:36,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:04:36,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 05:04:36,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:04:36,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 05:04:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:04:36,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:04:36,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421626135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:04:36,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:04:36,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-11-29 05:04:36,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806369632] [2023-11-29 05:04:36,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:04:36,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:04:36,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:04:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:04:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:04:36,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 78 [2023-11-29 05:04:36,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 3054 transitions, 68942 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:04:36,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:04:36,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 78 [2023-11-29 05:04:36,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:05:24,603 INFO L124 PetriNetUnfolderBase]: 19654/42497 cut-off events. [2023-11-29 05:05:24,604 INFO L125 PetriNetUnfolderBase]: For 1157523/1158802 co-relation queries the response was YES. [2023-11-29 05:05:25,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380741 conditions, 42497 events. 19654/42497 cut-off events. For 1157523/1158802 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 413833 event pairs, 2278 based on Foata normal form. 817/39731 useless extension candidates. Maximal degree in co-relation 380566. Up to 14520 conditions per place. [2023-11-29 05:05:25,522 INFO L140 encePairwiseOnDemand]: 70/78 looper letters, 3835 selfloop transitions, 1121 changer transitions 0/5134 dead transitions. [2023-11-29 05:05:25,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 5134 transitions, 125174 flow [2023-11-29 05:05:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:05:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:05:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 386 transitions. [2023-11-29 05:05:25,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.706959706959707 [2023-11-29 05:05:25,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 386 transitions. [2023-11-29 05:05:25,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 386 transitions. [2023-11-29 05:05:25,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:05:25,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 386 transitions. [2023-11-29 05:05:25,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:25,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:25,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:25,526 INFO L175 Difference]: Start difference. First operand has 411 places, 3054 transitions, 68942 flow. Second operand 7 states and 386 transitions. [2023-11-29 05:05:25,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 5134 transitions, 125174 flow [2023-11-29 05:05:40,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 5134 transitions, 122186 flow, removed 1494 selfloop flow, removed 0 redundant places. [2023-11-29 05:05:40,136 INFO L231 Difference]: Finished difference. Result has 418 places, 3433 transitions, 79401 flow [2023-11-29 05:05:40,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=67346, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=79401, PETRI_PLACES=418, PETRI_TRANSITIONS=3433} [2023-11-29 05:05:40,139 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 347 predicate places. [2023-11-29 05:05:40,139 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 3433 transitions, 79401 flow [2023-11-29 05:05:40,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:40,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:05:40,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:40,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 05:05:40,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:05:40,340 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:05:40,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1475596196, now seen corresponding path program 5 times [2023-11-29 05:05:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:05:40,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491349338] [2023-11-29 05:05:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:05:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:05:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:05:40,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491349338] [2023-11-29 05:05:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491349338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:05:40,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:05:40,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:05:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359822409] [2023-11-29 05:05:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:05:40,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:05:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:05:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:05:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:05:41,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-29 05:05:41,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 3433 transitions, 79401 flow. Second operand has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:05:41,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:05:41,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-29 05:05:41,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:06:52,813 INFO L124 PetriNetUnfolderBase]: 22921/47511 cut-off events. [2023-11-29 05:06:52,813 INFO L125 PetriNetUnfolderBase]: For 1184688/1184919 co-relation queries the response was YES. [2023-11-29 05:06:53,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418973 conditions, 47511 events. 22921/47511 cut-off events. For 1184688/1184919 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 448314 event pairs, 3506 based on Foata normal form. 234/44020 useless extension candidates. Maximal degree in co-relation 418796. Up to 14860 conditions per place. [2023-11-29 05:06:54,124 INFO L140 encePairwiseOnDemand]: 59/78 looper letters, 2222 selfloop transitions, 2148 changer transitions 2/4384 dead transitions. [2023-11-29 05:06:54,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 4384 transitions, 108108 flow [2023-11-29 05:06:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:06:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 05:06:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1324 transitions. [2023-11-29 05:06:54,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853227232537578 [2023-11-29 05:06:54,126 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1324 transitions. [2023-11-29 05:06:54,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1324 transitions. [2023-11-29 05:06:54,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:06:54,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1324 transitions. [2023-11-29 05:06:54,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 45.6551724137931) internal successors, (1324), 29 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:06:54,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 78.0) internal successors, (2340), 30 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:06:54,132 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 78.0) internal successors, (2340), 30 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:06:54,132 INFO L175 Difference]: Start difference. First operand has 418 places, 3433 transitions, 79401 flow. Second operand 29 states and 1324 transitions. [2023-11-29 05:06:54,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 4384 transitions, 108108 flow [2023-11-29 05:07:11,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 4384 transitions, 107952 flow, removed 78 selfloop flow, removed 0 redundant places. [2023-11-29 05:07:11,938 INFO L231 Difference]: Finished difference. Result has 465 places, 3886 transitions, 98189 flow [2023-11-29 05:07:11,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=79349, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1700, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=98189, PETRI_PLACES=465, PETRI_TRANSITIONS=3886} [2023-11-29 05:07:11,941 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 394 predicate places. [2023-11-29 05:07:11,941 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 3886 transitions, 98189 flow [2023-11-29 05:07:11,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:07:11,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:07:11,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:07:11,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:07:11,942 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:07:11,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash 406550124, now seen corresponding path program 6 times [2023-11-29 05:07:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:11,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071660965] [2023-11-29 05:07:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:11,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071660965] [2023-11-29 05:07:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071660965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946798307] [2023-11-29 05:07:12,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:07:12,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:12,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:12,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:07:12,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:07:12,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:07:12,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 05:07:12,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:12,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:07:13,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:07:13,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:07:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:13,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:14,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-11-29 05:07:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:07:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946798307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:14,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:07:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-11-29 05:07:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065495376] [2023-11-29 05:07:14,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 05:07:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 05:07:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2023-11-29 05:07:20,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-29 05:07:20,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 3886 transitions, 98189 flow. Second operand has 29 states, 29 states have (on average 37.41379310344828) internal successors, (1085), 29 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:07:20,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:07:20,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-29 05:07:20,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:57,397 INFO L124 PetriNetUnfolderBase]: 41703/86281 cut-off events. [2023-11-29 05:09:57,398 INFO L125 PetriNetUnfolderBase]: For 2799456/2799511 co-relation queries the response was YES. [2023-11-29 05:09:59,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834940 conditions, 86281 events. 41703/86281 cut-off events. For 2799456/2799511 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 884734 event pairs, 6080 based on Foata normal form. 282/80454 useless extension candidates. Maximal degree in co-relation 834744. Up to 16094 conditions per place. [2023-11-29 05:10:00,076 INFO L140 encePairwiseOnDemand]: 57/78 looper letters, 3465 selfloop transitions, 6058 changer transitions 7/9542 dead transitions. [2023-11-29 05:10:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 9542 transitions, 245621 flow [2023-11-29 05:10:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-29 05:10:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2023-11-29 05:10:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 4917 transitions. [2023-11-29 05:10:00,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434350132625995 [2023-11-29 05:10:00,083 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 4917 transitions. [2023-11-29 05:10:00,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 4917 transitions. [2023-11-29 05:10:00,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:00,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 4917 transitions. [2023-11-29 05:10:00,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 42.38793103448276) internal successors, (4917), 116 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:00,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 78.0) internal successors, (9126), 117 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:00,104 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 78.0) internal successors, (9126), 117 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:00,104 INFO L175 Difference]: Start difference. First operand has 465 places, 3886 transitions, 98189 flow. Second operand 116 states and 4917 transitions. [2023-11-29 05:10:00,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 9542 transitions, 245621 flow [2023-11-29 05:11:08,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 9542 transitions, 243357 flow, removed 965 selfloop flow, removed 7 redundant places. [2023-11-29 05:11:08,767 INFO L231 Difference]: Finished difference. Result has 631 places, 7706 transitions, 211561 flow [2023-11-29 05:11:08,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=97121, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=211561, PETRI_PLACES=631, PETRI_TRANSITIONS=7706} [2023-11-29 05:11:08,770 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 560 predicate places. [2023-11-29 05:11:08,771 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 7706 transitions, 211561 flow [2023-11-29 05:11:08,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 37.41379310344828) internal successors, (1085), 29 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:08,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:11:08,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:11:08,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:11:08,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a47fb580-805f-40ef-afe2-87dd67e625d6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 05:11:08,972 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-29 05:11:08,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1060077842, now seen corresponding path program 7 times [2023-11-29 05:11:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352598245] [2023-11-29 05:11:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:11:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352598245] [2023-11-29 05:11:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352598245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:09,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:11:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369425596] [2023-11-29 05:11:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:11:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:11:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:11:10,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-29 05:11:10,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 7706 transitions, 211561 flow. Second operand has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:10,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:11:10,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-29 05:11:10,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand