./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI --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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:41:38,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:41:38,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:41:38,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:41:38,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:41:38,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:41:38,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:41:38,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:41:38,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:41:38,909 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:41:38,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:41:38,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:41:38,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:41:38,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:41:38,914 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:41:38,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:41:38,916 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:41:38,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:41:38,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:41:38,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:41:38,918 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:41:38,918 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:41:38,919 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:41:38,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:41:38,920 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:41:38,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:41:38,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:41:38,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:41:38,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:41:38,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:41:38,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:41:38,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:41:38,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:41:38,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:41:38,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:41:38,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:41:38,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:41:38,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:41:38,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:41:38,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:41:38,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:41:38,929 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_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2023-11-24 21:41:39,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:41:39,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:41:39,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:41:39,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:41:39,317 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:41:39,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:41:42,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:41:42,730 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:41:42,731 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:41:42,765 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/data/19f21bcfa/febbb4278e1947ceb60b7f9056b44bfc/FLAGbff7ec0b8 [2023-11-24 21:41:42,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/data/19f21bcfa/febbb4278e1947ceb60b7f9056b44bfc [2023-11-24 21:41:42,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:41:42,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:41:42,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:41:42,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:41:42,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:41:42,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:41:42" (1/1) ... [2023-11-24 21:41:42,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527f5fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:42, skipping insertion in model container [2023-11-24 21:41:42,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:41:42" (1/1) ... [2023-11-24 21:41:42,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:41:43,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:41:43,346 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:41:43,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:41:43,464 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:41:43,464 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:41:43,473 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:41:43,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43 WrapperNode [2023-11-24 21:41:43,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:41:43,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:41:43,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:41:43,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:41:43,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,564 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-24 21:41:43,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:41:43,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:41:43,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:41:43,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:41:43,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,621 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:41:43,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:41:43,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:41:43,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:41:43,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:41:43,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (1/1) ... [2023-11-24 21:41:43,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:41:43,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:43,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:41:43,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:41:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:41:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:41:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:41:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:41:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:41:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:41:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:41:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:41:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:41:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:41:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:41:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:41:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:41:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:41:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:41:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:41:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:41:43,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:41:43,814 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:41:44,035 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:41:44,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:41:44,242 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:41:44,369 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:41:44,369 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:41:44,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:44 BoogieIcfgContainer [2023-11-24 21:41:44,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:41:44,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:41:44,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:41:44,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:41:44,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:41:42" (1/3) ... [2023-11-24 21:41:44,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22484334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:44, skipping insertion in model container [2023-11-24 21:41:44,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:43" (2/3) ... [2023-11-24 21:41:44,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22484334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:44, skipping insertion in model container [2023-11-24 21:41:44,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:44" (3/3) ... [2023-11-24 21:41:44,394 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:41:44,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:41:44,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-24 21:41:44,418 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:41:44,470 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:41:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 52 transitions, 116 flow [2023-11-24 21:41:44,546 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-24 21:41:44,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:41:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-24 21:41:44,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 52 transitions, 116 flow [2023-11-24 21:41:44,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 48 transitions, 105 flow [2023-11-24 21:41:44,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:41:44,574 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;@6352e4bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:41:44,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-24 21:41:44,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:41:44,578 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:41:44,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:41:44,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:44,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:41:44,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:44,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:44,586 INFO L85 PathProgramCache]: Analyzing trace with hash 7433, now seen corresponding path program 1 times [2023-11-24 21:41:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667680649] [2023-11-24 21:41:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:44,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667680649] [2023-11-24 21:41:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667680649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:44,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:44,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:44,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821112874] [2023-11-24 21:41:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:44,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:44,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-24 21:41:44,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:44,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:44,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-24 21:41:44,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:45,230 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-24 21:41:45,232 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:41:45,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 247 events. 75/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1346 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 389. Up to 117 conditions per place. [2023-11-24 21:41:45,239 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:41:45,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 139 flow [2023-11-24 21:41:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:41:45,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:41:45,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:41:45,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:41:45,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:45,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:41:45,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-24 21:41:45,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,272 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 105 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:41:45,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 139 flow [2023-11-24 21:41:45,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:41:45,279 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 21:41:45,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 21:41:45,286 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-24 21:41:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 21:41:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:45,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:41:45,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:41:45,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:45,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash 7434, now seen corresponding path program 1 times [2023-11-24 21:41:45,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:45,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863154789] [2023-11-24 21:41:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:45,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863154789] [2023-11-24 21:41:45,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863154789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:45,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941480792] [2023-11-24 21:41:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:45,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:45,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:45,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-24 21:41:45,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:45,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-24 21:41:45,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:45,601 INFO L124 PetriNetUnfolderBase]: 75/246 cut-off events. [2023-11-24 21:41:45,601 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:41:45,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 246 events. 75/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1342 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 397. Up to 116 conditions per place. [2023-11-24 21:41:45,605 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-24 21:41:45,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 136 flow [2023-11-24 21:41:45,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:41:45,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:41:45,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:41:45,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:41:45,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:45,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:41:45,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-24 21:41:45,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,613 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:41:45,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 136 flow [2023-11-24 21:41:45,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:45,618 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 21:41:45,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-24 21:41:45,622 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-24 21:41:45,623 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 21:41:45,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:45,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:45,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:41:45,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:45,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:45,632 INFO L85 PathProgramCache]: Analyzing trace with hash 221648202, now seen corresponding path program 1 times [2023-11-24 21:41:45,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:45,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251796236] [2023-11-24 21:41:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:45,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:45,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:45,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251796236] [2023-11-24 21:41:45,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251796236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:45,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:45,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:45,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841674082] [2023-11-24 21:41:45,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:45,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:45,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-24 21:41:45,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:45,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-24 21:41:45,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:45,870 INFO L124 PetriNetUnfolderBase]: 76/244 cut-off events. [2023-11-24 21:41:45,870 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:41:45,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 244 events. 76/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1312 event pairs, 63 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-24 21:41:45,874 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-24 21:41:45,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 136 flow [2023-11-24 21:41:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-24 21:41:45,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-24 21:41:45,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-24 21:41:45,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-24 21:41:45,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:45,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-24 21:41:45,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,880 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 115 transitions. [2023-11-24 21:41:45,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 136 flow [2023-11-24 21:41:45,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:45,883 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-24 21:41:45,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-24 21:41:45,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-24 21:41:45,884 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-24 21:41:45,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:45,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:45,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:45,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:41:45,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:45,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash 221648203, now seen corresponding path program 1 times [2023-11-24 21:41:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:45,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328337252] [2023-11-24 21:41:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:46,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328337252] [2023-11-24 21:41:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328337252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:46,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:46,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500376545] [2023-11-24 21:41:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:46,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:46,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:46,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:46,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-24 21:41:46,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:46,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-24 21:41:46,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:46,145 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-24 21:41:46,145 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:41:46,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 242 events. 75/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1348 event pairs, 42 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 395. Up to 113 conditions per place. [2023-11-24 21:41:46,157 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-24 21:41:46,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 132 flow [2023-11-24 21:41:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:41:46,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:41:46,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:41:46,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:41:46,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:46,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:41:46,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-24 21:41:46,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,169 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:41:46,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 132 flow [2023-11-24 21:41:46,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:46,173 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-24 21:41:46,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-24 21:41:46,175 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-24 21:41:46,175 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-24 21:41:46,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:46,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:46,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:41:46,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:46,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061700, now seen corresponding path program 1 times [2023-11-24 21:41:46,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287485607] [2023-11-24 21:41:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:46,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287485607] [2023-11-24 21:41:46,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287485607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:46,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:46,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889980062] [2023-11-24 21:41:46,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:46,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:46,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-24 21:41:46,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-24 21:41:46,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:46,431 INFO L124 PetriNetUnfolderBase]: 79/242 cut-off events. [2023-11-24 21:41:46,431 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:41:46,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 242 events. 79/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1303 event pairs, 27 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 403. Up to 112 conditions per place. [2023-11-24 21:41:46,434 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-24 21:41:46,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 132 flow [2023-11-24 21:41:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-24 21:41:46,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-24 21:41:46,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-24 21:41:46,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-24 21:41:46,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:46,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-24 21:41:46,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,438 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 115 transitions. [2023-11-24 21:41:46,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 132 flow [2023-11-24 21:41:46,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:46,440 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-24 21:41:46,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-24 21:41:46,441 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-24 21:41:46,441 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-24 21:41:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:46,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:46,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:41:46,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:46,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061701, now seen corresponding path program 1 times [2023-11-24 21:41:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178959564] [2023-11-24 21:41:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178959564] [2023-11-24 21:41:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178959564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:46,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:46,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369551769] [2023-11-24 21:41:46,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:46,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:46,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:46,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-24 21:41:46,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:46,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-24 21:41:46,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:46,605 INFO L124 PetriNetUnfolderBase]: 75/234 cut-off events. [2023-11-24 21:41:46,605 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:41:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 234 events. 75/234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1248 event pairs, 27 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 389. Up to 104 conditions per place. [2023-11-24 21:41:46,608 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-24 21:41:46,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 128 flow [2023-11-24 21:41:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 21:41:46,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-24 21:41:46,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 21:41:46,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 21:41:46,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:46,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 21:41:46,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-24 21:41:46,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,612 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 117 transitions. [2023-11-24 21:41:46,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 128 flow [2023-11-24 21:41:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:46,614 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-24 21:41:46,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-24 21:41:46,615 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-24 21:41:46,615 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-24 21:41:46,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:46,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:46,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:41:46,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:46,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -395415043, now seen corresponding path program 1 times [2023-11-24 21:41:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:46,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025034820] [2023-11-24 21:41:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025034820] [2023-11-24 21:41:47,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025034820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:47,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:47,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:41:47,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766380146] [2023-11-24 21:41:47,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:41:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:41:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:41:47,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 52 [2023-11-24 21:41:47,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:47,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:47,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 52 [2023-11-24 21:41:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:47,681 INFO L124 PetriNetUnfolderBase]: 209/537 cut-off events. [2023-11-24 21:41:47,681 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-24 21:41:47,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 537 events. 209/537 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3457 event pairs, 84 based on Foata normal form. 12/526 useless extension candidates. Maximal degree in co-relation 947. Up to 163 conditions per place. [2023-11-24 21:41:47,686 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 33 selfloop transitions, 6 changer transitions 6/67 dead transitions. [2023-11-24 21:41:47,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 246 flow [2023-11-24 21:41:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:41:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:41:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2023-11-24 21:41:47,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7225274725274725 [2023-11-24 21:41:47,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 263 transitions. [2023-11-24 21:41:47,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 263 transitions. [2023-11-24 21:41:47,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:47,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 263 transitions. [2023-11-24 21:41:47,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:47,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:47,697 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:47,697 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 7 states and 263 transitions. [2023-11-24 21:41:47,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 246 flow [2023-11-24 21:41:47,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:47,702 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 123 flow [2023-11-24 21:41:47,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-11-24 21:41:47,705 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-24 21:41:47,705 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 123 flow [2023-11-24 21:41:47,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:47,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:47,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:41:47,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:47,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -395413506, now seen corresponding path program 1 times [2023-11-24 21:41:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:47,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239044309] [2023-11-24 21:41:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:47,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:47,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239044309] [2023-11-24 21:41:47,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239044309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:47,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:47,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701626917] [2023-11-24 21:41:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:47,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-24 21:41:47,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 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) [2023-11-24 21:41:47,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:47,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-24 21:41:47,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:48,894 INFO L124 PetriNetUnfolderBase]: 2722/5242 cut-off events. [2023-11-24 21:41:48,895 INFO L125 PetriNetUnfolderBase]: For 566/568 co-relation queries the response was YES. [2023-11-24 21:41:48,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10142 conditions, 5242 events. 2722/5242 cut-off events. For 566/568 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 43849 event pairs, 601 based on Foata normal form. 0/5001 useless extension candidates. Maximal degree in co-relation 10126. Up to 1471 conditions per place. [2023-11-24 21:41:48,945 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 29 changer transitions 6/118 dead transitions. [2023-11-24 21:41:48,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 118 transitions, 528 flow [2023-11-24 21:41:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 339 transitions. [2023-11-24 21:41:48,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7243589743589743 [2023-11-24 21:41:48,952 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 339 transitions. [2023-11-24 21:41:48,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 339 transitions. [2023-11-24 21:41:48,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:48,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 339 transitions. [2023-11-24 21:41:48,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:48,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:48,958 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:48,958 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 123 flow. Second operand 9 states and 339 transitions. [2023-11-24 21:41:48,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 118 transitions, 528 flow [2023-11-24 21:41:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 522 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:48,968 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 360 flow [2023-11-24 21:41:48,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-24 21:41:48,972 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-24 21:41:48,972 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 360 flow [2023-11-24 21:41:49,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 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) [2023-11-24 21:41:49,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:49,051 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] [2023-11-24 21:41:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:41:49,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:49,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1175538174, now seen corresponding path program 1 times [2023-11-24 21:41:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:49,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637813109] [2023-11-24 21:41:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:49,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637813109] [2023-11-24 21:41:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637813109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:49,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:41:49,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354697066] [2023-11-24 21:41:49,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:49,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:41:49,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:41:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:41:49,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2023-11-24 21:41:49,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 360 flow. Second operand has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 9 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:49,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:49,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2023-11-24 21:41:49,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:51,199 INFO L124 PetriNetUnfolderBase]: 3104/6582 cut-off events. [2023-11-24 21:41:51,199 INFO L125 PetriNetUnfolderBase]: For 10071/10491 co-relation queries the response was YES. [2023-11-24 21:41:51,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17951 conditions, 6582 events. 3104/6582 cut-off events. For 10071/10491 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 62586 event pairs, 1695 based on Foata normal form. 342/6249 useless extension candidates. Maximal degree in co-relation 17927. Up to 2112 conditions per place. [2023-11-24 21:41:51,284 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 39 selfloop transitions, 14 changer transitions 2/95 dead transitions. [2023-11-24 21:41:51,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 576 flow [2023-11-24 21:41:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:41:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:41:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2023-11-24 21:41:51,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6394230769230769 [2023-11-24 21:41:51,287 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2023-11-24 21:41:51,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2023-11-24 21:41:51,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:51,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2023-11-24 21:41:51,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:51,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2023-11-24 21:41:51,291 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2023-11-24 21:41:51,291 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 360 flow. Second operand 8 states and 266 transitions. [2023-11-24 21:41:51,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 576 flow [2023-11-24 21:41:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:41:51,361 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 410 flow [2023-11-24 21:41:51,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2023-11-24 21:41:51,363 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-24 21:41:51,363 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 410 flow [2023-11-24 21:41:51,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.555555555555557) internal successors, (266), 9 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:51,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:51,364 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] [2023-11-24 21:41:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:41:51,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:51,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1175539711, now seen corresponding path program 1 times [2023-11-24 21:41:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624582982] [2023-11-24 21:41:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624582982] [2023-11-24 21:41:51,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624582982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:51,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:51,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801179028] [2023-11-24 21:41:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:51,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:51,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-24 21:41:51,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:51,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:51,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-24 21:41:51,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:53,242 INFO L124 PetriNetUnfolderBase]: 4401/8248 cut-off events. [2023-11-24 21:41:53,242 INFO L125 PetriNetUnfolderBase]: For 15071/15073 co-relation queries the response was YES. [2023-11-24 21:41:53,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26118 conditions, 8248 events. 4401/8248 cut-off events. For 15071/15073 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 73596 event pairs, 370 based on Foata normal form. 182/8342 useless extension candidates. Maximal degree in co-relation 26092. Up to 1679 conditions per place. [2023-11-24 21:41:53,317 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 47 selfloop transitions, 8 changer transitions 109/181 dead transitions. [2023-11-24 21:41:53,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 181 transitions, 1448 flow [2023-11-24 21:41:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:41:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:41:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 435 transitions. [2023-11-24 21:41:53,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2023-11-24 21:41:53,325 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 435 transitions. [2023-11-24 21:41:53,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 435 transitions. [2023-11-24 21:41:53,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:53,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 435 transitions. [2023-11-24 21:41:53,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.25) internal successors, (435), 12 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:53,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:53,332 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 52.0) internal successors, (676), 13 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:53,333 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 410 flow. Second operand 12 states and 435 transitions. [2023-11-24 21:41:53,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 181 transitions, 1448 flow [2023-11-24 21:41:53,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 181 transitions, 1406 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:53,425 INFO L231 Difference]: Finished difference. Result has 94 places, 51 transitions, 322 flow [2023-11-24 21:41:53,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=322, PETRI_PLACES=94, PETRI_TRANSITIONS=51} [2023-11-24 21:41:53,427 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2023-11-24 21:41:53,428 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 51 transitions, 322 flow [2023-11-24 21:41:53,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:53,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:53,428 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] [2023-11-24 21:41:53,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:41:53,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:53,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2051470095, now seen corresponding path program 1 times [2023-11-24 21:41:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361001719] [2023-11-24 21:41:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:53,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:53,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:53,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361001719] [2023-11-24 21:41:53,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361001719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:53,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:53,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:53,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713661151] [2023-11-24 21:41:53,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:53,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:53,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 52 [2023-11-24 21:41:53,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 51 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:53,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:53,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 52 [2023-11-24 21:41:53,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:54,193 INFO L124 PetriNetUnfolderBase]: 1204/2970 cut-off events. [2023-11-24 21:41:54,193 INFO L125 PetriNetUnfolderBase]: For 9287/9753 co-relation queries the response was YES. [2023-11-24 21:41:54,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 2970 events. 1204/2970 cut-off events. For 9287/9753 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26713 event pairs, 369 based on Foata normal form. 201/2954 useless extension candidates. Maximal degree in co-relation 8782. Up to 1141 conditions per place. [2023-11-24 21:41:54,230 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 20 selfloop transitions, 4 changer transitions 17/72 dead transitions. [2023-11-24 21:41:54,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 72 transitions, 502 flow [2023-11-24 21:41:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:41:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:41:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 253 transitions. [2023-11-24 21:41:54,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.695054945054945 [2023-11-24 21:41:54,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 253 transitions. [2023-11-24 21:41:54,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 253 transitions. [2023-11-24 21:41:54,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:54,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 253 transitions. [2023-11-24 21:41:54,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:54,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:54,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:54,297 INFO L175 Difference]: Start difference. First operand has 94 places, 51 transitions, 322 flow. Second operand 7 states and 253 transitions. [2023-11-24 21:41:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 72 transitions, 502 flow [2023-11-24 21:41:54,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 414 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-11-24 21:41:54,345 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 280 flow [2023-11-24 21:41:54,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-11-24 21:41:54,346 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-11-24 21:41:54,346 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 280 flow [2023-11-24 21:41:54,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:54,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:54,347 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] [2023-11-24 21:41:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:41:54,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:54,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -238895330, now seen corresponding path program 1 times [2023-11-24 21:41:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955479517] [2023-11-24 21:41:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955479517] [2023-11-24 21:41:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955479517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:54,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:54,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:41:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518779316] [2023-11-24 21:41:54,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:54,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:54,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:54,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2023-11-24 21:41:54,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:54,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:54,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2023-11-24 21:41:54,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:55,380 INFO L124 PetriNetUnfolderBase]: 1726/3775 cut-off events. [2023-11-24 21:41:55,380 INFO L125 PetriNetUnfolderBase]: For 5215/5291 co-relation queries the response was YES. [2023-11-24 21:41:55,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 3775 events. 1726/3775 cut-off events. For 5215/5291 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 33274 event pairs, 778 based on Foata normal form. 115/3718 useless extension candidates. Maximal degree in co-relation 10378. Up to 1362 conditions per place. [2023-11-24 21:41:55,417 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 28 selfloop transitions, 4 changer transitions 48/107 dead transitions. [2023-11-24 21:41:55,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 107 transitions, 685 flow [2023-11-24 21:41:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:41:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:41:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 446 transitions. [2023-11-24 21:41:55,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597633136094675 [2023-11-24 21:41:55,421 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 446 transitions. [2023-11-24 21:41:55,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 446 transitions. [2023-11-24 21:41:55,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:55,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 446 transitions. [2023-11-24 21:41:55,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.30769230769231) internal successors, (446), 13 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:55,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:55,427 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 52.0) internal successors, (728), 14 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:55,427 INFO L175 Difference]: Start difference. First operand has 79 places, 51 transitions, 280 flow. Second operand 13 states and 446 transitions. [2023-11-24 21:41:55,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 107 transitions, 685 flow [2023-11-24 21:41:55,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 633 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-11-24 21:41:55,466 INFO L231 Difference]: Finished difference. Result has 86 places, 51 transitions, 286 flow [2023-11-24 21:41:55,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=286, PETRI_PLACES=86, PETRI_TRANSITIONS=51} [2023-11-24 21:41:55,467 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2023-11-24 21:41:55,468 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 51 transitions, 286 flow [2023-11-24 21:41:55,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:55,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:55,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:55,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:41:55,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:55,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -360795696, now seen corresponding path program 1 times [2023-11-24 21:41:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144856455] [2023-11-24 21:41:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:55,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144856455] [2023-11-24 21:41:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144856455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:55,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:55,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:55,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212141046] [2023-11-24 21:41:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:55,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:55,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:55,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:55,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-24 21:41:55,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 51 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:55,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:55,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-24 21:41:55,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:56,322 INFO L124 PetriNetUnfolderBase]: 1281/2786 cut-off events. [2023-11-24 21:41:56,322 INFO L125 PetriNetUnfolderBase]: For 5763/5787 co-relation queries the response was YES. [2023-11-24 21:41:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 2786 events. 1281/2786 cut-off events. For 5763/5787 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22647 event pairs, 351 based on Foata normal form. 32/2731 useless extension candidates. Maximal degree in co-relation 8455. Up to 988 conditions per place. [2023-11-24 21:41:56,352 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 43 selfloop transitions, 14 changer transitions 22/96 dead transitions. [2023-11-24 21:41:56,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 96 transitions, 680 flow [2023-11-24 21:41:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:41:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:41:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2023-11-24 21:41:56,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-11-24 21:41:56,355 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 340 transitions. [2023-11-24 21:41:56,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 340 transitions. [2023-11-24 21:41:56,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:56,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 340 transitions. [2023-11-24 21:41:56,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:56,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:56,362 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:56,362 INFO L175 Difference]: Start difference. First operand has 86 places, 51 transitions, 286 flow. Second operand 10 states and 340 transitions. [2023-11-24 21:41:56,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 96 transitions, 680 flow [2023-11-24 21:41:56,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 598 flow, removed 34 selfloop flow, removed 12 redundant places. [2023-11-24 21:41:56,401 INFO L231 Difference]: Finished difference. Result has 82 places, 54 transitions, 354 flow [2023-11-24 21:41:56,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=82, PETRI_TRANSITIONS=54} [2023-11-24 21:41:56,402 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-24 21:41:56,403 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 54 transitions, 354 flow [2023-11-24 21:41:56,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:56,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:56,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:56,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:41:56,404 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:56,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1519891055, now seen corresponding path program 1 times [2023-11-24 21:41:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420646786] [2023-11-24 21:41:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420646786] [2023-11-24 21:41:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420646786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:56,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031592654] [2023-11-24 21:41:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:56,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:41:56,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 54 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:56,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:56,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:41:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:57,105 INFO L124 PetriNetUnfolderBase]: 985/2247 cut-off events. [2023-11-24 21:41:57,106 INFO L125 PetriNetUnfolderBase]: For 4860/5248 co-relation queries the response was YES. [2023-11-24 21:41:57,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5905 conditions, 2247 events. 985/2247 cut-off events. For 4860/5248 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18658 event pairs, 276 based on Foata normal form. 109/2181 useless extension candidates. Maximal degree in co-relation 5872. Up to 574 conditions per place. [2023-11-24 21:41:57,125 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 20 selfloop transitions, 4 changer transitions 30/81 dead transitions. [2023-11-24 21:41:57,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 572 flow [2023-11-24 21:41:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:41:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:41:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2023-11-24 21:41:57,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2023-11-24 21:41:57,128 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2023-11-24 21:41:57,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2023-11-24 21:41:57,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:57,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2023-11-24 21:41:57,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 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) [2023-11-24 21:41:57,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2023-11-24 21:41:57,133 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 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) [2023-11-24 21:41:57,133 INFO L175 Difference]: Start difference. First operand has 82 places, 54 transitions, 354 flow. Second operand 8 states and 284 transitions. [2023-11-24 21:41:57,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 572 flow [2023-11-24 21:41:57,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 530 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-11-24 21:41:57,158 INFO L231 Difference]: Finished difference. Result has 82 places, 44 transitions, 255 flow [2023-11-24 21:41:57,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=82, PETRI_TRANSITIONS=44} [2023-11-24 21:41:57,161 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-24 21:41:57,161 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 44 transitions, 255 flow [2023-11-24 21:41:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:57,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:57,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:57,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:41:57,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:57,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash 264144089, now seen corresponding path program 1 times [2023-11-24 21:41:57,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:57,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95094697] [2023-11-24 21:41:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:57,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95094697] [2023-11-24 21:41:57,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95094697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:57,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:57,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:41:57,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602906269] [2023-11-24 21:41:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:41:57,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:41:57,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 44 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:57,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:57,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:41:57,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:57,569 INFO L124 PetriNetUnfolderBase]: 647/1264 cut-off events. [2023-11-24 21:41:57,570 INFO L125 PetriNetUnfolderBase]: For 1102/1164 co-relation queries the response was YES. [2023-11-24 21:41:57,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 1264 events. 647/1264 cut-off events. For 1102/1164 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7917 event pairs, 140 based on Foata normal form. 53/1269 useless extension candidates. Maximal degree in co-relation 2878. Up to 639 conditions per place. [2023-11-24 21:41:57,581 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 25 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-11-24 21:41:57,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 57 transitions, 348 flow [2023-11-24 21:41:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2023-11-24 21:41:57,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2023-11-24 21:41:57,583 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 152 transitions. [2023-11-24 21:41:57,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 152 transitions. [2023-11-24 21:41:57,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:57,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 152 transitions. [2023-11-24 21:41:57,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2023-11-24 21:41:57,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:57,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:57,586 INFO L175 Difference]: Start difference. First operand has 82 places, 44 transitions, 255 flow. Second operand 4 states and 152 transitions. [2023-11-24 21:41:57,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 57 transitions, 348 flow [2023-11-24 21:41:57,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 296 flow, removed 11 selfloop flow, removed 17 redundant places. [2023-11-24 21:41:57,599 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 245 flow [2023-11-24 21:41:57,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-24 21:41:57,601 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-11-24 21:41:57,601 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 245 flow [2023-11-24 21:41:57,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:57,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:57,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:41:57,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:57,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash 948988084, now seen corresponding path program 1 times [2023-11-24 21:41:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179778896] [2023-11-24 21:41:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:57,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179778896] [2023-11-24 21:41:57,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179778896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:57,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:57,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:57,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485854047] [2023-11-24 21:41:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:57,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:41:57,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:57,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:57,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:41:57,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:58,039 INFO L124 PetriNetUnfolderBase]: 555/1090 cut-off events. [2023-11-24 21:41:58,039 INFO L125 PetriNetUnfolderBase]: For 604/908 co-relation queries the response was YES. [2023-11-24 21:41:58,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1090 events. 555/1090 cut-off events. For 604/908 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6266 event pairs, 54 based on Foata normal form. 60/1107 useless extension candidates. Maximal degree in co-relation 2710. Up to 424 conditions per place. [2023-11-24 21:41:58,048 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 30 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-11-24 21:41:58,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 373 flow [2023-11-24 21:41:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2023-11-24 21:41:58,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2023-11-24 21:41:58,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 190 transitions. [2023-11-24 21:41:58,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 190 transitions. [2023-11-24 21:41:58,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:58,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 190 transitions. [2023-11-24 21:41:58,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2023-11-24 21:41:58,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2023-11-24 21:41:58,056 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 245 flow. Second operand 5 states and 190 transitions. [2023-11-24 21:41:58,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 373 flow [2023-11-24 21:41:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:58,062 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 297 flow [2023-11-24 21:41:58,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-11-24 21:41:58,063 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-11-24 21:41:58,063 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 297 flow [2023-11-24 21:41:58,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:58,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:41:58,065 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:58,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 332167045, now seen corresponding path program 1 times [2023-11-24 21:41:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363306272] [2023-11-24 21:41:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:58,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:58,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363306272] [2023-11-24 21:41:58,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363306272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:58,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:58,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:58,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585755347] [2023-11-24 21:41:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:58,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:58,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-24 21:41:58,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:58,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-24 21:41:58,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:58,430 INFO L124 PetriNetUnfolderBase]: 419/794 cut-off events. [2023-11-24 21:41:58,430 INFO L125 PetriNetUnfolderBase]: For 1212/1671 co-relation queries the response was YES. [2023-11-24 21:41:58,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 794 events. 419/794 cut-off events. For 1212/1671 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4107 event pairs, 18 based on Foata normal form. 56/811 useless extension candidates. Maximal degree in co-relation 2426. Up to 264 conditions per place. [2023-11-24 21:41:58,436 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 26 selfloop transitions, 11 changer transitions 4/67 dead transitions. [2023-11-24 21:41:58,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 415 flow [2023-11-24 21:41:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:41:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:41:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2023-11-24 21:41:58,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2023-11-24 21:41:58,438 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 222 transitions. [2023-11-24 21:41:58,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 222 transitions. [2023-11-24 21:41:58,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:58,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 222 transitions. [2023-11-24 21:41:58,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,441 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 297 flow. Second operand 6 states and 222 transitions. [2023-11-24 21:41:58,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 415 flow [2023-11-24 21:41:58,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 389 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-24 21:41:58,446 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 302 flow [2023-11-24 21:41:58,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2023-11-24 21:41:58,447 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-24 21:41:58,447 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 302 flow [2023-11-24 21:41:58,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:58,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:58,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:41:58,449 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-24 21:41:58,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash 246595854, now seen corresponding path program 1 times [2023-11-24 21:41:58,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:58,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083461056] [2023-11-24 21:41:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:58,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:58,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083461056] [2023-11-24 21:41:58,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083461056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:58,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200266210] [2023-11-24 21:41:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:58,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2023-11-24 21:41:58,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 302 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) [2023-11-24 21:41:58,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:58,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2023-11-24 21:41:58,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:58,822 INFO L124 PetriNetUnfolderBase]: 291/620 cut-off events. [2023-11-24 21:41:58,822 INFO L125 PetriNetUnfolderBase]: For 1342/1443 co-relation queries the response was YES. [2023-11-24 21:41:58,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 620 events. 291/620 cut-off events. For 1342/1443 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3539 event pairs, 81 based on Foata normal form. 14/537 useless extension candidates. Maximal degree in co-relation 1981. Up to 345 conditions per place. [2023-11-24 21:41:58,826 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-11-24 21:41:58,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 383 flow [2023-11-24 21:41:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:41:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:41:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2023-11-24 21:41:58,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2023-11-24 21:41:58,829 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 202 transitions. [2023-11-24 21:41:58,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 202 transitions. [2023-11-24 21:41:58,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:58,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 202 transitions. [2023-11-24 21:41:58,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,832 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,832 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 302 flow. Second operand 6 states and 202 transitions. [2023-11-24 21:41:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 383 flow [2023-11-24 21:41:58,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 59 transitions, 335 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-24 21:41:58,840 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-11-24 21:41:58,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2023-11-24 21:41:58,840 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-11-24 21:41:58,841 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-11-24 21:41:58,841 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) [2023-11-24 21:41:58,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-24 21:41:58,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-24 21:41:58,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-24 21:41:58,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-24 21:41:58,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-24 21:41:58,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-24 21:41:58,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-24 21:41:58,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-24 21:41:58,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-24 21:41:58,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-24 21:41:58,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-24 21:41:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:41:58,847 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:58,853 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:41:58,854 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:41:58,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:41:58 BasicIcfg [2023-11-24 21:41:58,860 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:41:58,861 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:41:58,861 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:41:58,862 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:41:58,862 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:44" (3/4) ... [2023-11-24 21:41:58,864 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:41:58,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:41:58,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:41:58,869 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:41:58,877 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-24 21:41:58,877 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-24 21:41:58,877 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:41:58,878 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:41:58,980 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:41:58,981 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:41:58,981 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:41:58,983 INFO L158 Benchmark]: Toolchain (without parser) took 16196.03ms. Allocated memory was 153.1MB in the beginning and 813.7MB in the end (delta: 660.6MB). Free memory was 119.8MB in the beginning and 585.4MB in the end (delta: -465.6MB). Peak memory consumption was 193.9MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,983 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:41:58,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 687.08ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 98.9MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.97ms. Allocated memory is still 153.1MB. Free memory was 98.9MB in the beginning and 96.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,985 INFO L158 Benchmark]: Boogie Preprocessor took 100.27ms. Allocated memory is still 153.1MB. Free memory was 96.9MB in the beginning and 94.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,986 INFO L158 Benchmark]: RCFGBuilder took 715.68ms. Allocated memory is still 153.1MB. Free memory was 94.4MB in the beginning and 104.2MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,986 INFO L158 Benchmark]: TraceAbstraction took 14475.36ms. Allocated memory was 153.1MB in the beginning and 813.7MB in the end (delta: 660.6MB). Free memory was 103.5MB in the beginning and 589.6MB in the end (delta: -486.1MB). Peak memory consumption was 176.4MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,987 INFO L158 Benchmark]: Witness Printer took 120.05ms. Allocated memory is still 813.7MB. Free memory was 589.6MB in the beginning and 585.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:41:58,996 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 687.08ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 98.9MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.97ms. Allocated memory is still 153.1MB. Free memory was 98.9MB in the beginning and 96.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.27ms. Allocated memory is still 153.1MB. Free memory was 96.9MB in the beginning and 94.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 715.68ms. Allocated memory is still 153.1MB. Free memory was 94.4MB in the beginning and 104.2MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14475.36ms. Allocated memory was 153.1MB in the beginning and 813.7MB in the end (delta: 660.6MB). Free memory was 103.5MB in the beginning and 589.6MB in the end (delta: -486.1MB). Peak memory consumption was 176.4MB. Max. memory is 16.1GB. * Witness Printer took 120.05ms. Allocated memory is still 813.7MB. Free memory was 589.6MB in the beginning and 585.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.3s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 800 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 659 mSDsluCounter, 287 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1974 IncrementalHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 75 mSDtfsCounter, 1974 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=410occurred in iteration=9, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 1989 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:41:59,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0b0d64-f3ff-47a9-94af-97556b3603f7/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE