./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/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_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/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_0652be38-24f0-42c7-b54c-7887285a70d9/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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:10,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:10,773 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:44:10,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:10,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:10,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:10,833 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:10,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:10,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:10,840 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:10,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:10,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:10,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:10,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:10,843 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:10,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:10,844 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:10,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:10,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:10,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:10,846 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:44:10,846 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:44:10,847 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:44:10,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:10,848 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:44:10,859 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:44:10,859 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:10,860 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:10,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:10,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:10,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:10,862 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:10,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:10,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:10,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:10,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:44:10,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:44:10,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:10,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:10,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:10,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:10,865 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_0652be38-24f0-42c7-b54c-7887285a70d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2023-11-24 21:44:11,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:11,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:11,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:11,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:11,149 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:11,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:44:14,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:14,677 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:14,679 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:44:14,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/data/967cf4b2e/917cc857bf604c4cb5136008b3c1a219/FLAGf4ca158d2 [2023-11-24 21:44:14,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/data/967cf4b2e/917cc857bf604c4cb5136008b3c1a219 [2023-11-24 21:44:14,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:14,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:14,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:14,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:14,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:14,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:14" (1/1) ... [2023-11-24 21:44:14,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:14, skipping insertion in model container [2023-11-24 21:44:14,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:14" (1/1) ... [2023-11-24 21:44:14,795 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:15,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:15,326 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:44:15,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:15,498 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:15,498 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:15,506 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:44:15,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15 WrapperNode [2023-11-24 21:44:15,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:15,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:15,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:44:15,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:44:15,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,604 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 159 [2023-11-24 21:44:15,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:15,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:44:15,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:44:15,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:44:15,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,694 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 21:44:15,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:44:15,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:44:15,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:44:15,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:44:15,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (1/1) ... [2023-11-24 21:44:15,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:15,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:44:15,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:44:15,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0652be38-24f0-42c7-b54c-7887285a70d9/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:44:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:44:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:44:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:44:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:44:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:44:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:44:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:44:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:44:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:44:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:44:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:44:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:44:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:44:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:44:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:44:15,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:44:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:44:15,867 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 21:44:16,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:44:16,024 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:44:16,371 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:44:16,663 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:44:16,664 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:44:16,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:16 BoogieIcfgContainer [2023-11-24 21:44:16,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:44:16,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:44:16,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:44:16,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:44:16,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:44:14" (1/3) ... [2023-11-24 21:44:16,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf13f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:16, skipping insertion in model container [2023-11-24 21:44:16,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:15" (2/3) ... [2023-11-24 21:44:16,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf13f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:16, skipping insertion in model container [2023-11-24 21:44:16,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:16" (3/3) ... [2023-11-24 21:44:16,692 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:44:16,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:44:16,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-24 21:44:16,711 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:44:16,776 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:44:16,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 44 transitions, 96 flow [2023-11-24 21:44:16,843 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2023-11-24 21:44:16,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:44:16,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-24 21:44:16,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 44 transitions, 96 flow [2023-11-24 21:44:16,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 42 transitions, 90 flow [2023-11-24 21:44:16,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:44:16,866 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;@507dfcb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:44:16,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-24 21:44:16,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:44:16,869 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:44:16,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:44:16,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:16,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:44:16,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:16,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 14224, now seen corresponding path program 1 times [2023-11-24 21:44:16,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:16,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083110816] [2023-11-24 21:44:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:16,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:17,214 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 21:44:17,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:17,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083110816] [2023-11-24 21:44:17,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083110816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74647444] [2023-11-24 21:44:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:17,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:17,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:17,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:17,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 21:44:17,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:17,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:17,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:17,692 INFO L124 PetriNetUnfolderBase]: 420/879 cut-off events. [2023-11-24 21:44:17,693 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-24 21:44:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 879 events. 420/879 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5269 event pairs, 322 based on Foata normal form. 60/868 useless extension candidates. Maximal degree in co-relation 1584. Up to 544 conditions per place. [2023-11-24 21:44:17,708 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 29 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:44:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 162 flow [2023-11-24 21:44:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-24 21:44:17,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:44:17,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-24 21:44:17,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-24 21:44:17,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:17,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-24 21:44:17,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:17,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:17,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:17,740 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 90 flow. Second operand 3 states and 88 transitions. [2023-11-24 21:44:17,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 162 flow [2023-11-24 21:44:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:17,755 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 84 flow [2023-11-24 21:44:17,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-24 21:44:17,763 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-11-24 21:44:17,764 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 84 flow [2023-11-24 21:44:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 21:44:17,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:17,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:44:17,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:44:17,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:17,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash 14225, now seen corresponding path program 1 times [2023-11-24 21:44:17,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:17,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710012576] [2023-11-24 21:44:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:17,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:17,916 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 21:44:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710012576] [2023-11-24 21:44:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710012576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:17,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284705182] [2023-11-24 21:44:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:17,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:17,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-24 21:44:17,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 21:44:17,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:17,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-24 21:44:17,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:18,219 INFO L124 PetriNetUnfolderBase]: 420/878 cut-off events. [2023-11-24 21:44:18,219 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-24 21:44:18,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 878 events. 420/878 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5297 event pairs, 322 based on Foata normal form. 1/808 useless extension candidates. Maximal degree in co-relation 1614. Up to 543 conditions per place. [2023-11-24 21:44:18,227 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 28 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-24 21:44:18,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 160 flow [2023-11-24 21:44:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-24 21:44:18,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:44:18,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-24 21:44:18,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-24 21:44:18,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:18,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-24 21:44:18,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:18,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:18,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:18,239 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 84 flow. Second operand 3 states and 88 transitions. [2023-11-24 21:44:18,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 160 flow [2023-11-24 21:44:18,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:18,245 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 82 flow [2023-11-24 21:44:18,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-24 21:44:18,249 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-11-24 21:44:18,249 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 82 flow [2023-11-24 21:44:18,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 21:44:18,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:18,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:44:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:44:18,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:18,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash 424149482, now seen corresponding path program 1 times [2023-11-24 21:44:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:18,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020368228] [2023-11-24 21:44:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:18,334 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 21:44:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:18,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020368228] [2023-11-24 21:44:18,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020368228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:18,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:18,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043785278] [2023-11-24 21:44:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:18,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:18,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:18,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 21:44:18,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:18,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:18,624 INFO L124 PetriNetUnfolderBase]: 424/882 cut-off events. [2023-11-24 21:44:18,624 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-24 21:44:18,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 882 events. 424/882 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5366 event pairs, 198 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 1627. Up to 546 conditions per place. [2023-11-24 21:44:18,634 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 29 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-24 21:44:18,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 160 flow [2023-11-24 21:44:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:18,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-24 21:44:18,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2023-11-24 21:44:18,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-24 21:44:18,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-24 21:44:18,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:18,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-24 21:44:18,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 21:44:18,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:18,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:18,645 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 82 flow. Second operand 3 states and 86 transitions. [2023-11-24 21:44:18,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 160 flow [2023-11-24 21:44:18,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:18,650 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 80 flow [2023-11-24 21:44:18,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-24 21:44:18,652 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-11-24 21:44:18,652 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 80 flow [2023-11-24 21:44:18,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 21:44:18,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:18,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:44:18,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:44:18,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:18,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash 424149483, now seen corresponding path program 1 times [2023-11-24 21:44:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:18,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971075508] [2023-11-24 21:44:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:18,787 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 21:44:18,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971075508] [2023-11-24 21:44:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971075508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:18,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934800690] [2023-11-24 21:44:18,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:18,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:18,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:18,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:18,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2023-11-24 21:44:18,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 21:44:18,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:18,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2023-11-24 21:44:18,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:19,033 INFO L124 PetriNetUnfolderBase]: 420/873 cut-off events. [2023-11-24 21:44:19,034 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-24 21:44:19,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 873 events. 420/873 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5289 event pairs, 198 based on Foata normal form. 5/813 useless extension candidates. Maximal degree in co-relation 1614. Up to 537 conditions per place. [2023-11-24 21:44:19,041 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 28 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-24 21:44:19,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 156 flow [2023-11-24 21:44:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-24 21:44:19,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:44:19,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-24 21:44:19,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-24 21:44:19,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:19,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-24 21:44:19,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:19,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:19,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:19,046 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 80 flow. Second operand 3 states and 88 transitions. [2023-11-24 21:44:19,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 156 flow [2023-11-24 21:44:19,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:19,048 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 78 flow [2023-11-24 21:44:19,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-24 21:44:19,049 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2023-11-24 21:44:19,049 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 78 flow [2023-11-24 21:44:19,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 21:44:19,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:19,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:19,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:44:19,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:19,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash 43834282, now seen corresponding path program 1 times [2023-11-24 21:44:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:19,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320604284] [2023-11-24 21:44:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:19,176 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 21:44:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320604284] [2023-11-24 21:44:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320604284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028386150] [2023-11-24 21:44:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:19,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2023-11-24 21:44:19,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:19,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:19,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2023-11-24 21:44:19,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:19,401 INFO L124 PetriNetUnfolderBase]: 344/750 cut-off events. [2023-11-24 21:44:19,401 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-24 21:44:19,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 750 events. 344/750 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4238 event pairs, 40 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 1365. Up to 485 conditions per place. [2023-11-24 21:44:19,408 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 28 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2023-11-24 21:44:19,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 166 flow [2023-11-24 21:44:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-24 21:44:19,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2023-11-24 21:44:19,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-24 21:44:19,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-24 21:44:19,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:19,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-24 21:44:19,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 21:44:19,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:19,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 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 21:44:19,413 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 78 flow. Second operand 3 states and 93 transitions. [2023-11-24 21:44:19,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 166 flow [2023-11-24 21:44:19,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:19,415 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 74 flow [2023-11-24 21:44:19,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-11-24 21:44:19,419 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-11-24 21:44:19,419 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 74 flow [2023-11-24 21:44:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:19,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:19,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:44:19,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:19,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 515722103, now seen corresponding path program 1 times [2023-11-24 21:44:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:19,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982094391] [2023-11-24 21:44:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:19,937 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 21:44:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982094391] [2023-11-24 21:44:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982094391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514407931] [2023-11-24 21:44:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:19,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:44:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:44:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:44:20,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:20,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 21:44:20,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:20,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:20,496 INFO L124 PetriNetUnfolderBase]: 489/1038 cut-off events. [2023-11-24 21:44:20,496 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-24 21:44:20,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 1038 events. 489/1038 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6532 event pairs, 413 based on Foata normal form. 25/1040 useless extension candidates. Maximal degree in co-relation 1954. Up to 441 conditions per place. [2023-11-24 21:44:20,504 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 34 selfloop transitions, 3 changer transitions 9/58 dead transitions. [2023-11-24 21:44:20,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 222 flow [2023-11-24 21:44:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:44:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:44:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2023-11-24 21:44:20,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2023-11-24 21:44:20,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 137 transitions. [2023-11-24 21:44:20,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 137 transitions. [2023-11-24 21:44:20,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:20,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 137 transitions. [2023-11-24 21:44:20,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 21:44:20,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:20,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:20,511 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 74 flow. Second operand 5 states and 137 transitions. [2023-11-24 21:44:20,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 222 flow [2023-11-24 21:44:20,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:20,515 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 92 flow [2023-11-24 21:44:20,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-11-24 21:44:20,518 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-11-24 21:44:20,519 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 92 flow [2023-11-24 21:44:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 21:44:20,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:20,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:20,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:44:20,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:20,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 515721926, now seen corresponding path program 1 times [2023-11-24 21:44:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964013608] [2023-11-24 21:44:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:20,834 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 21:44:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964013608] [2023-11-24 21:44:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964013608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:20,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003823946] [2023-11-24 21:44:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:20,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:20,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:20,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:20,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 21:44:20,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:20,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:20,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:21,358 INFO L124 PetriNetUnfolderBase]: 699/1381 cut-off events. [2023-11-24 21:44:21,359 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-24 21:44:21,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 1381 events. 699/1381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8440 event pairs, 156 based on Foata normal form. 0/1336 useless extension candidates. Maximal degree in co-relation 2715. Up to 590 conditions per place. [2023-11-24 21:44:21,371 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 49 selfloop transitions, 11 changer transitions 10/82 dead transitions. [2023-11-24 21:44:21,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 342 flow [2023-11-24 21:44:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:44:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:44:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2023-11-24 21:44:21,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6079545454545454 [2023-11-24 21:44:21,374 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 214 transitions. [2023-11-24 21:44:21,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 214 transitions. [2023-11-24 21:44:21,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:21,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 214 transitions. [2023-11-24 21:44:21,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 21:44:21,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:44:21,383 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:44:21,384 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 92 flow. Second operand 8 states and 214 transitions. [2023-11-24 21:44:21,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 342 flow [2023-11-24 21:44:21,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 338 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:21,388 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 153 flow [2023-11-24 21:44:21,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=153, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-24 21:44:21,389 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-11-24 21:44:21,389 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 153 flow [2023-11-24 21:44:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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 21:44:21,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:21,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:21,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:44:21,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:21,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:21,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1063841223, now seen corresponding path program 1 times [2023-11-24 21:44:21,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:21,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187082127] [2023-11-24 21:44:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,896 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 21:44:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187082127] [2023-11-24 21:44:21,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187082127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:21,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:21,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582522319] [2023-11-24 21:44:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:44:21,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:44:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:44:21,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2023-11-24 21:44:21,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:21,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:21,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2023-11-24 21:44:21,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:22,450 INFO L124 PetriNetUnfolderBase]: 575/1200 cut-off events. [2023-11-24 21:44:22,451 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-24 21:44:22,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1200 events. 575/1200 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7434 event pairs, 448 based on Foata normal form. 30/1218 useless extension candidates. Maximal degree in co-relation 2728. Up to 923 conditions per place. [2023-11-24 21:44:22,462 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 22 selfloop transitions, 3 changer transitions 16/52 dead transitions. [2023-11-24 21:44:22,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 253 flow [2023-11-24 21:44:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:44:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:44:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2023-11-24 21:44:22,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2023-11-24 21:44:22,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 118 transitions. [2023-11-24 21:44:22,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 118 transitions. [2023-11-24 21:44:22,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:22,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 118 transitions. [2023-11-24 21:44:22,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 21:44:22,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:22,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:22,467 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 153 flow. Second operand 5 states and 118 transitions. [2023-11-24 21:44:22,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 253 flow [2023-11-24 21:44:22,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 253 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:44:22,482 INFO L231 Difference]: Finished difference. Result has 56 places, 33 transitions, 107 flow [2023-11-24 21:44:22,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=56, PETRI_TRANSITIONS=33} [2023-11-24 21:44:22,485 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2023-11-24 21:44:22,485 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 33 transitions, 107 flow [2023-11-24 21:44:22,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:22,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:22,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:22,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:44:22,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:22,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash -698411837, now seen corresponding path program 1 times [2023-11-24 21:44:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809569291] [2023-11-24 21:44:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:23,277 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 21:44:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:23,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809569291] [2023-11-24 21:44:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809569291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:23,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:44:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373927713] [2023-11-24 21:44:23,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:23,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:44:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:44:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:44:23,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:23,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 33 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 21:44:23,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:23,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:23,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:23,900 INFO L124 PetriNetUnfolderBase]: 484/985 cut-off events. [2023-11-24 21:44:23,900 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2023-11-24 21:44:23,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 985 events. 484/985 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5719 event pairs, 225 based on Foata normal form. 20/999 useless extension candidates. Maximal degree in co-relation 2168. Up to 540 conditions per place. [2023-11-24 21:44:23,908 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 27 selfloop transitions, 3 changer transitions 31/72 dead transitions. [2023-11-24 21:44:23,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 329 flow [2023-11-24 21:44:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:44:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:44:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2023-11-24 21:44:23,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2023-11-24 21:44:23,911 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 206 transitions. [2023-11-24 21:44:23,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 206 transitions. [2023-11-24 21:44:23,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:23,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 206 transitions. [2023-11-24 21:44:23,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 21:44:23,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:44:23,914 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:44:23,914 INFO L175 Difference]: Start difference. First operand has 56 places, 33 transitions, 107 flow. Second operand 8 states and 206 transitions. [2023-11-24 21:44:23,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 329 flow [2023-11-24 21:44:23,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 299 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-24 21:44:23,922 INFO L231 Difference]: Finished difference. Result has 54 places, 32 transitions, 104 flow [2023-11-24 21:44:23,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=32} [2023-11-24 21:44:23,923 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2023-11-24 21:44:23,923 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 32 transitions, 104 flow [2023-11-24 21:44:23,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 21:44:23,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:23,924 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 21:44:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:44:23,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:23,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash -16945601, now seen corresponding path program 1 times [2023-11-24 21:44:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:23,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567494816] [2023-11-24 21:44:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:25,083 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 21:44:25,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:25,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567494816] [2023-11-24 21:44:25,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567494816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:25,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:25,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:25,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903861885] [2023-11-24 21:44:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:25,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:44:25,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:25,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:44:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:44:25,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:25,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 32 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:26,016 INFO L124 PetriNetUnfolderBase]: 563/1197 cut-off events. [2023-11-24 21:44:26,017 INFO L125 PetriNetUnfolderBase]: For 356/357 co-relation queries the response was YES. [2023-11-24 21:44:26,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1197 events. 563/1197 cut-off events. For 356/357 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7333 event pairs, 40 based on Foata normal form. 17/1211 useless extension candidates. Maximal degree in co-relation 2608. Up to 516 conditions per place. [2023-11-24 21:44:26,026 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 49 selfloop transitions, 23 changer transitions 32/115 dead transitions. [2023-11-24 21:44:26,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 543 flow [2023-11-24 21:44:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 21:44:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-24 21:44:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 413 transitions. [2023-11-24 21:44:26,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521390374331551 [2023-11-24 21:44:26,030 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 413 transitions. [2023-11-24 21:44:26,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 413 transitions. [2023-11-24 21:44:26,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:26,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 413 transitions. [2023-11-24 21:44:26,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 24.294117647058822) internal successors, (413), 17 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:26,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 44.0) internal successors, (792), 18 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 21:44:26,037 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 44.0) internal successors, (792), 18 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 21:44:26,037 INFO L175 Difference]: Start difference. First operand has 54 places, 32 transitions, 104 flow. Second operand 17 states and 413 transitions. [2023-11-24 21:44:26,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 543 flow [2023-11-24 21:44:26,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 115 transitions, 491 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:26,046 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 256 flow [2023-11-24 21:44:26,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=256, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-11-24 21:44:26,047 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2023-11-24 21:44:26,048 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 256 flow [2023-11-24 21:44:26,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:26,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:26,048 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 21:44:26,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:44:26,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:26,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash 562697947, now seen corresponding path program 2 times [2023-11-24 21:44:26,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:26,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531277174] [2023-11-24 21:44:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:26,909 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 21:44:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531277174] [2023-11-24 21:44:26,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531277174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:26,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:26,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:44:26,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509570894] [2023-11-24 21:44:26,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:26,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:26,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:26,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:26,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:44:26,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:26,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:26,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:27,355 INFO L124 PetriNetUnfolderBase]: 554/1196 cut-off events. [2023-11-24 21:44:27,355 INFO L125 PetriNetUnfolderBase]: For 1665/1701 co-relation queries the response was YES. [2023-11-24 21:44:27,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 1196 events. 554/1196 cut-off events. For 1665/1701 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7410 event pairs, 85 based on Foata normal form. 27/1219 useless extension candidates. Maximal degree in co-relation 3552. Up to 814 conditions per place. [2023-11-24 21:44:27,367 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 51 selfloop transitions, 15 changer transitions 20/97 dead transitions. [2023-11-24 21:44:27,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 614 flow [2023-11-24 21:44:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:44:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:44:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2023-11-24 21:44:27,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844155844155844 [2023-11-24 21:44:27,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 180 transitions. [2023-11-24 21:44:27,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 180 transitions. [2023-11-24 21:44:27,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:27,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 180 transitions. [2023-11-24 21:44:27,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:44:27,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 21:44:27,372 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 21:44:27,372 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 256 flow. Second operand 7 states and 180 transitions. [2023-11-24 21:44:27,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 614 flow [2023-11-24 21:44:27,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 584 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-11-24 21:44:27,392 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 350 flow [2023-11-24 21:44:27,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=350, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2023-11-24 21:44:27,393 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2023-11-24 21:44:27,393 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 350 flow [2023-11-24 21:44:27,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:44:27,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:27,393 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 21:44:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:44:27,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:27,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1061756991, now seen corresponding path program 3 times [2023-11-24 21:44:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499482796] [2023-11-24 21:44:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:28,586 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 21:44:28,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499482796] [2023-11-24 21:44:28,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499482796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:28,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:28,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:44:28,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753618109] [2023-11-24 21:44:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:28,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:44:28,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:28,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:44:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:28,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 350 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 21:44:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:29,513 INFO L124 PetriNetUnfolderBase]: 895/1741 cut-off events. [2023-11-24 21:44:29,514 INFO L125 PetriNetUnfolderBase]: For 2349/2407 co-relation queries the response was YES. [2023-11-24 21:44:29,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 1741 events. 895/1741 cut-off events. For 2349/2407 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10313 event pairs, 116 based on Foata normal form. 98/1834 useless extension candidates. Maximal degree in co-relation 5151. Up to 1110 conditions per place. [2023-11-24 21:44:29,530 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 61 selfloop transitions, 19 changer transitions 29/118 dead transitions. [2023-11-24 21:44:29,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 118 transitions, 802 flow [2023-11-24 21:44:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:44:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:44:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2023-11-24 21:44:29,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431818181818182 [2023-11-24 21:44:29,532 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 239 transitions. [2023-11-24 21:44:29,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 239 transitions. [2023-11-24 21:44:29,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:29,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 239 transitions. [2023-11-24 21:44:29,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:29,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 21:44:29,536 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 21:44:29,536 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 350 flow. Second operand 10 states and 239 transitions. [2023-11-24 21:44:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 118 transitions, 802 flow [2023-11-24 21:44:29,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 772 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-24 21:44:29,550 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 434 flow [2023-11-24 21:44:29,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-11-24 21:44:29,551 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2023-11-24 21:44:29,551 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 434 flow [2023-11-24 21:44:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 21:44:29,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:29,552 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 21:44:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:44:29,552 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:29,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1791117625, now seen corresponding path program 4 times [2023-11-24 21:44:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:29,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245272377] [2023-11-24 21:44:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:29,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:30,634 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 21:44:30,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245272377] [2023-11-24 21:44:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245272377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:30,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:30,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:44:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616414634] [2023-11-24 21:44:30,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:30,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:30,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:30,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:30,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 21:44:30,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:30,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:30,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:31,885 INFO L124 PetriNetUnfolderBase]: 1117/2134 cut-off events. [2023-11-24 21:44:31,885 INFO L125 PetriNetUnfolderBase]: For 4188/4263 co-relation queries the response was YES. [2023-11-24 21:44:31,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 2134 events. 1117/2134 cut-off events. For 4188/4263 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12878 event pairs, 101 based on Foata normal form. 73/2205 useless extension candidates. Maximal degree in co-relation 6919. Up to 1015 conditions per place. [2023-11-24 21:44:31,907 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 85 selfloop transitions, 43 changer transitions 27/164 dead transitions. [2023-11-24 21:44:31,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 164 transitions, 1158 flow [2023-11-24 21:44:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 21:44:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-24 21:44:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 387 transitions. [2023-11-24 21:44:31,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497159090909091 [2023-11-24 21:44:31,910 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 387 transitions. [2023-11-24 21:44:31,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 387 transitions. [2023-11-24 21:44:31,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:31,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 387 transitions. [2023-11-24 21:44:31,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 24.1875) internal successors, (387), 16 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 21:44:31,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 44.0) internal successors, (748), 17 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 21:44:31,915 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 44.0) internal successors, (748), 17 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 21:44:31,915 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 434 flow. Second operand 16 states and 387 transitions. [2023-11-24 21:44:31,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 164 transitions, 1158 flow [2023-11-24 21:44:31,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 164 transitions, 1109 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:31,936 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 687 flow [2023-11-24 21:44:31,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=687, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2023-11-24 21:44:31,938 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 41 predicate places. [2023-11-24 21:44:31,938 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 687 flow [2023-11-24 21:44:31,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 10 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 21:44:31,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:31,939 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] [2023-11-24 21:44:31,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:44:31,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:31,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 402449812, now seen corresponding path program 1 times [2023-11-24 21:44:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812480653] [2023-11-24 21:44:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:34,053 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 21:44:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:34,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812480653] [2023-11-24 21:44:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812480653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:34,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:34,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:44:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693784079] [2023-11-24 21:44:34,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:44:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:44:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:44:34,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:34,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 687 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 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 21:44:34,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:34,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:34,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:35,410 INFO L124 PetriNetUnfolderBase]: 1205/2296 cut-off events. [2023-11-24 21:44:35,410 INFO L125 PetriNetUnfolderBase]: For 8819/8981 co-relation queries the response was YES. [2023-11-24 21:44:35,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9229 conditions, 2296 events. 1205/2296 cut-off events. For 8819/8981 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14132 event pairs, 210 based on Foata normal form. 98/2392 useless extension candidates. Maximal degree in co-relation 9192. Up to 1570 conditions per place. [2023-11-24 21:44:35,444 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 84 selfloop transitions, 45 changer transitions 25/163 dead transitions. [2023-11-24 21:44:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 163 transitions, 1525 flow [2023-11-24 21:44:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:44:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:44:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 303 transitions. [2023-11-24 21:44:35,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297202797202797 [2023-11-24 21:44:35,447 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 303 transitions. [2023-11-24 21:44:35,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 303 transitions. [2023-11-24 21:44:35,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:35,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 303 transitions. [2023-11-24 21:44:35,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 23.307692307692307) internal successors, (303), 13 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 21:44:35,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 21:44:35,452 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 21:44:35,452 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 687 flow. Second operand 13 states and 303 transitions. [2023-11-24 21:44:35,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 163 transitions, 1525 flow [2023-11-24 21:44:35,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 163 transitions, 1451 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-24 21:44:35,493 INFO L231 Difference]: Finished difference. Result has 97 places, 113 transitions, 1097 flow [2023-11-24 21:44:35,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1097, PETRI_PLACES=97, PETRI_TRANSITIONS=113} [2023-11-24 21:44:35,495 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2023-11-24 21:44:35,495 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 113 transitions, 1097 flow [2023-11-24 21:44:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 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 21:44:35,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:35,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:35,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:44:35,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:35,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash -592258544, now seen corresponding path program 2 times [2023-11-24 21:44:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960545662] [2023-11-24 21:44:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:37,246 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 21:44:37,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960545662] [2023-11-24 21:44:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960545662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:37,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:44:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622687852] [2023-11-24 21:44:37,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:44:37,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:37,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:44:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:44:37,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:37,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 113 transitions, 1097 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 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 21:44:37,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:37,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:38,491 INFO L124 PetriNetUnfolderBase]: 1140/2174 cut-off events. [2023-11-24 21:44:38,491 INFO L125 PetriNetUnfolderBase]: For 10333/10532 co-relation queries the response was YES. [2023-11-24 21:44:38,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 2174 events. 1140/2174 cut-off events. For 10333/10532 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13140 event pairs, 196 based on Foata normal form. 71/2243 useless extension candidates. Maximal degree in co-relation 9360. Up to 1449 conditions per place. [2023-11-24 21:44:38,517 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 93 selfloop transitions, 34 changer transitions 24/160 dead transitions. [2023-11-24 21:44:38,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 1693 flow [2023-11-24 21:44:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:44:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:44:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2023-11-24 21:44:38,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-24 21:44:38,519 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 232 transitions. [2023-11-24 21:44:38,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 232 transitions. [2023-11-24 21:44:38,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:38,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 232 transitions. [2023-11-24 21:44:38,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.2) internal successors, (232), 10 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:38,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 21:44:38,522 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 21:44:38,522 INFO L175 Difference]: Start difference. First operand has 97 places, 113 transitions, 1097 flow. Second operand 10 states and 232 transitions. [2023-11-24 21:44:38,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 1693 flow [2023-11-24 21:44:38,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 160 transitions, 1625 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:38,580 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 1156 flow [2023-11-24 21:44:38,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1156, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2023-11-24 21:44:38,581 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 56 predicate places. [2023-11-24 21:44:38,582 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 1156 flow [2023-11-24 21:44:38,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 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 21:44:38,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:38,582 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] [2023-11-24 21:44:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:44:38,582 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:38,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1985029244, now seen corresponding path program 1 times [2023-11-24 21:44:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:38,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15612372] [2023-11-24 21:44:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:39,331 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 21:44:39,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:39,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15612372] [2023-11-24 21:44:39,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15612372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:39,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:39,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:39,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481233148] [2023-11-24 21:44:39,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:44:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:44:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:44:39,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:39,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 1156 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 21:44:39,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:39,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:39,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:40,208 INFO L124 PetriNetUnfolderBase]: 1134/2151 cut-off events. [2023-11-24 21:44:40,208 INFO L125 PetriNetUnfolderBase]: For 11289/11441 co-relation queries the response was YES. [2023-11-24 21:44:40,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 2151 events. 1134/2151 cut-off events. For 11289/11441 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12917 event pairs, 228 based on Foata normal form. 65/2214 useless extension candidates. Maximal degree in co-relation 9722. Up to 1430 conditions per place. [2023-11-24 21:44:40,232 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 76 selfloop transitions, 49 changer transitions 19/153 dead transitions. [2023-11-24 21:44:40,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 153 transitions, 1688 flow [2023-11-24 21:44:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:44:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:44:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-24 21:44:40,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-11-24 21:44:40,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-24 21:44:40,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-24 21:44:40,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:40,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-24 21:44:40,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:40,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 21:44:40,238 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 21:44:40,238 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 1156 flow. Second operand 9 states and 213 transitions. [2023-11-24 21:44:40,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 153 transitions, 1688 flow [2023-11-24 21:44:40,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 153 transitions, 1586 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-11-24 21:44:40,293 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 1276 flow [2023-11-24 21:44:40,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1276, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2023-11-24 21:44:40,294 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 53 predicate places. [2023-11-24 21:44:40,294 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 1276 flow [2023-11-24 21:44:40,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 21:44:40,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:40,295 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] [2023-11-24 21:44:40,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:44:40,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:40,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash 927448160, now seen corresponding path program 2 times [2023-11-24 21:44:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:40,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036722710] [2023-11-24 21:44:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:40,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:40,963 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 21:44:40,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036722710] [2023-11-24 21:44:40,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036722710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:40,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:40,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080806436] [2023-11-24 21:44:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:40,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:44:40,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:44:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:44:41,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:41,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 1276 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 21:44:41,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:41,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:41,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:42,055 INFO L124 PetriNetUnfolderBase]: 1532/2777 cut-off events. [2023-11-24 21:44:42,055 INFO L125 PetriNetUnfolderBase]: For 16273/16319 co-relation queries the response was YES. [2023-11-24 21:44:42,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 2777 events. 1532/2777 cut-off events. For 16273/16319 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17561 event pairs, 132 based on Foata normal form. 73/2846 useless extension candidates. Maximal degree in co-relation 12818. Up to 917 conditions per place. [2023-11-24 21:44:42,081 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 114 selfloop transitions, 30 changer transitions 74/233 dead transitions. [2023-11-24 21:44:42,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 233 transitions, 2662 flow [2023-11-24 21:44:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:44:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:44:42,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2023-11-24 21:44:42,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2023-11-24 21:44:42,084 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 298 transitions. [2023-11-24 21:44:42,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 298 transitions. [2023-11-24 21:44:42,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:42,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 298 transitions. [2023-11-24 21:44:42,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 24.833333333333332) internal successors, (298), 12 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:42,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 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 21:44:42,091 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 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 21:44:42,091 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 1276 flow. Second operand 12 states and 298 transitions. [2023-11-24 21:44:42,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 233 transitions, 2662 flow [2023-11-24 21:44:42,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 233 transitions, 2611 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:42,191 INFO L231 Difference]: Finished difference. Result has 115 places, 119 transitions, 1361 flow [2023-11-24 21:44:42,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1361, PETRI_PLACES=115, PETRI_TRANSITIONS=119} [2023-11-24 21:44:42,192 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 68 predicate places. [2023-11-24 21:44:42,193 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 119 transitions, 1361 flow [2023-11-24 21:44:42,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 21:44:42,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:42,193 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] [2023-11-24 21:44:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:44:42,193 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:42,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash -559252960, now seen corresponding path program 3 times [2023-11-24 21:44:42,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:42,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863487826] [2023-11-24 21:44:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:43,559 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 21:44:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:43,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863487826] [2023-11-24 21:44:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863487826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:43,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:43,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:44:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120828516] [2023-11-24 21:44:43,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:43,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:44:43,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:43,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:44:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:43,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:43,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 119 transitions, 1361 flow. Second operand has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:43,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:43,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:43,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:44,489 INFO L124 PetriNetUnfolderBase]: 522/1239 cut-off events. [2023-11-24 21:44:44,489 INFO L125 PetriNetUnfolderBase]: For 8708/8817 co-relation queries the response was YES. [2023-11-24 21:44:44,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 1239 events. 522/1239 cut-off events. For 8708/8817 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8074 event pairs, 143 based on Foata normal form. 62/1291 useless extension candidates. Maximal degree in co-relation 5981. Up to 709 conditions per place. [2023-11-24 21:44:44,503 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 91 selfloop transitions, 43 changer transitions 15/164 dead transitions. [2023-11-24 21:44:44,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 164 transitions, 1999 flow [2023-11-24 21:44:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:44:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:44:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 293 transitions. [2023-11-24 21:44:44,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549242424242424 [2023-11-24 21:44:44,507 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 293 transitions. [2023-11-24 21:44:44,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 293 transitions. [2023-11-24 21:44:44,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:44,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 293 transitions. [2023-11-24 21:44:44,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 24.416666666666668) internal successors, (293), 12 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 21:44:44,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 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 21:44:44,511 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 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 21:44:44,511 INFO L175 Difference]: Start difference. First operand has 115 places, 119 transitions, 1361 flow. Second operand 12 states and 293 transitions. [2023-11-24 21:44:44,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 164 transitions, 1999 flow [2023-11-24 21:44:44,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 164 transitions, 1964 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:44,555 INFO L231 Difference]: Finished difference. Result has 121 places, 131 transitions, 1615 flow [2023-11-24 21:44:44,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1615, PETRI_PLACES=121, PETRI_TRANSITIONS=131} [2023-11-24 21:44:44,556 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 74 predicate places. [2023-11-24 21:44:44,556 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 131 transitions, 1615 flow [2023-11-24 21:44:44,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:44,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:44,557 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] [2023-11-24 21:44:44,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:44:44,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:44,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash -891716604, now seen corresponding path program 4 times [2023-11-24 21:44:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:44,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677451056] [2023-11-24 21:44:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:45,396 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 21:44:45,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677451056] [2023-11-24 21:44:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677451056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:45,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:45,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289204401] [2023-11-24 21:44:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:45,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:44:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:44:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:44:45,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:45,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 131 transitions, 1615 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 21:44:45,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:45,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:45,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:46,171 INFO L124 PetriNetUnfolderBase]: 576/1358 cut-off events. [2023-11-24 21:44:46,172 INFO L125 PetriNetUnfolderBase]: For 12664/12780 co-relation queries the response was YES. [2023-11-24 21:44:46,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7233 conditions, 1358 events. 576/1358 cut-off events. For 12664/12780 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9028 event pairs, 131 based on Foata normal form. 47/1399 useless extension candidates. Maximal degree in co-relation 7176. Up to 677 conditions per place. [2023-11-24 21:44:46,188 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 85 selfloop transitions, 55 changer transitions 31/186 dead transitions. [2023-11-24 21:44:46,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 186 transitions, 2529 flow [2023-11-24 21:44:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:44:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:44:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2023-11-24 21:44:46,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-11-24 21:44:46,190 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 253 transitions. [2023-11-24 21:44:46,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 253 transitions. [2023-11-24 21:44:46,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:46,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 253 transitions. [2023-11-24 21:44:46,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.3) internal successors, (253), 10 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 21:44:46,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 21:44:46,195 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 21:44:46,196 INFO L175 Difference]: Start difference. First operand has 121 places, 131 transitions, 1615 flow. Second operand 10 states and 253 transitions. [2023-11-24 21:44:46,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 186 transitions, 2529 flow [2023-11-24 21:44:46,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 186 transitions, 2419 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:46,255 INFO L231 Difference]: Finished difference. Result has 125 places, 135 transitions, 1811 flow [2023-11-24 21:44:46,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=125, PETRI_TRANSITIONS=135} [2023-11-24 21:44:46,256 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 78 predicate places. [2023-11-24 21:44:46,256 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 135 transitions, 1811 flow [2023-11-24 21:44:46,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 21:44:46,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:46,257 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] [2023-11-24 21:44:46,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:44:46,257 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:46,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1631859854, now seen corresponding path program 5 times [2023-11-24 21:44:46,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:46,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193168624] [2023-11-24 21:44:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:46,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:46,976 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 21:44:46,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:46,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193168624] [2023-11-24 21:44:46,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193168624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:46,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:46,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:44:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920957217] [2023-11-24 21:44:46,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:46,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:46,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:46,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:46,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:46,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 135 transitions, 1811 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 21:44:46,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:46,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:46,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:47,535 INFO L124 PetriNetUnfolderBase]: 496/1217 cut-off events. [2023-11-24 21:44:47,535 INFO L125 PetriNetUnfolderBase]: For 12555/12650 co-relation queries the response was YES. [2023-11-24 21:44:47,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 1217 events. 496/1217 cut-off events. For 12555/12650 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8009 event pairs, 131 based on Foata normal form. 54/1263 useless extension candidates. Maximal degree in co-relation 6471. Up to 638 conditions per place. [2023-11-24 21:44:47,549 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 77 selfloop transitions, 53 changer transitions 17/162 dead transitions. [2023-11-24 21:44:47,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 162 transitions, 2362 flow [2023-11-24 21:44:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:44:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:44:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2023-11-24 21:44:47,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2023-11-24 21:44:47,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 219 transitions. [2023-11-24 21:44:47,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 219 transitions. [2023-11-24 21:44:47,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:47,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 219 transitions. [2023-11-24 21:44:47,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 21:44:47,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 21:44:47,555 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 21:44:47,556 INFO L175 Difference]: Start difference. First operand has 125 places, 135 transitions, 1811 flow. Second operand 9 states and 219 transitions. [2023-11-24 21:44:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 162 transitions, 2362 flow [2023-11-24 21:44:47,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 162 transitions, 2237 flow, removed 50 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:47,608 INFO L231 Difference]: Finished difference. Result has 130 places, 137 transitions, 1937 flow [2023-11-24 21:44:47,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1937, PETRI_PLACES=130, PETRI_TRANSITIONS=137} [2023-11-24 21:44:47,609 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 83 predicate places. [2023-11-24 21:44:47,609 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 137 transitions, 1937 flow [2023-11-24 21:44:47,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 21:44:47,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:47,610 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 21:44:47,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 21:44:47,610 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:47,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 426133121, now seen corresponding path program 1 times [2023-11-24 21:44:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:47,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570828405] [2023-11-24 21:44:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:48,489 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 21:44:48,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:48,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570828405] [2023-11-24 21:44:48,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570828405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:48,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:48,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:48,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775528902] [2023-11-24 21:44:48,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:48,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:44:48,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:44:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:44:48,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:48,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 137 transitions, 1937 flow. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 21:44:48,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:48,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:48,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:49,151 INFO L124 PetriNetUnfolderBase]: 501/1236 cut-off events. [2023-11-24 21:44:49,151 INFO L125 PetriNetUnfolderBase]: For 13026/13123 co-relation queries the response was YES. [2023-11-24 21:44:49,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6839 conditions, 1236 events. 501/1236 cut-off events. For 13026/13123 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8242 event pairs, 116 based on Foata normal form. 56/1281 useless extension candidates. Maximal degree in co-relation 6778. Up to 603 conditions per place. [2023-11-24 21:44:49,164 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 78 selfloop transitions, 53 changer transitions 11/157 dead transitions. [2023-11-24 21:44:49,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 2372 flow [2023-11-24 21:44:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:44:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:44:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-24 21:44:49,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-11-24 21:44:49,167 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-24 21:44:49,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-24 21:44:49,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:49,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-24 21:44:49,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:49,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 21:44:49,170 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 21:44:49,170 INFO L175 Difference]: Start difference. First operand has 130 places, 137 transitions, 1937 flow. Second operand 9 states and 213 transitions. [2023-11-24 21:44:49,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 2372 flow [2023-11-24 21:44:49,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 157 transitions, 2312 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:49,232 INFO L231 Difference]: Finished difference. Result has 133 places, 139 transitions, 2108 flow [2023-11-24 21:44:49,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2108, PETRI_PLACES=133, PETRI_TRANSITIONS=139} [2023-11-24 21:44:49,233 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 86 predicate places. [2023-11-24 21:44:49,234 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 2108 flow [2023-11-24 21:44:49,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 21:44:49,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:49,235 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 21:44:49,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 21:44:49,235 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:49,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash -217551450, now seen corresponding path program 1 times [2023-11-24 21:44:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:49,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827372688] [2023-11-24 21:44:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:49,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:50,300 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 21:44:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:50,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827372688] [2023-11-24 21:44:50,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827372688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:50,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:50,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:44:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23052175] [2023-11-24 21:44:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:50,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:50,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 2108 flow. Second operand has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 21:44:50,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:50,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:50,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:51,163 INFO L124 PetriNetUnfolderBase]: 551/1349 cut-off events. [2023-11-24 21:44:51,163 INFO L125 PetriNetUnfolderBase]: For 17033/17156 co-relation queries the response was YES. [2023-11-24 21:44:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7967 conditions, 1349 events. 551/1349 cut-off events. For 17033/17156 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9226 event pairs, 102 based on Foata normal form. 65/1410 useless extension candidates. Maximal degree in co-relation 7905. Up to 552 conditions per place. [2023-11-24 21:44:51,174 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 105 selfloop transitions, 60 changer transitions 22/202 dead transitions. [2023-11-24 21:44:51,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 202 transitions, 3125 flow [2023-11-24 21:44:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:44:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:44:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 328 transitions. [2023-11-24 21:44:51,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734265734265734 [2023-11-24 21:44:51,179 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 328 transitions. [2023-11-24 21:44:51,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 328 transitions. [2023-11-24 21:44:51,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:51,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 328 transitions. [2023-11-24 21:44:51,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 21:44:51,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 21:44:51,182 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 21:44:51,182 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 2108 flow. Second operand 13 states and 328 transitions. [2023-11-24 21:44:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 202 transitions, 3125 flow [2023-11-24 21:44:51,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 202 transitions, 3014 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-11-24 21:44:51,263 INFO L231 Difference]: Finished difference. Result has 142 places, 147 transitions, 2414 flow [2023-11-24 21:44:51,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2414, PETRI_PLACES=142, PETRI_TRANSITIONS=147} [2023-11-24 21:44:51,264 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 95 predicate places. [2023-11-24 21:44:51,264 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 147 transitions, 2414 flow [2023-11-24 21:44:51,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 21:44:51,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:51,265 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 21:44:51,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-24 21:44:51,265 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:51,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash -854546394, now seen corresponding path program 2 times [2023-11-24 21:44:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920888412] [2023-11-24 21:44:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:52,521 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 21:44:52,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:52,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920888412] [2023-11-24 21:44:52,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920888412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:52,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:52,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:44:52,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613560077] [2023-11-24 21:44:52,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:52,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:44:52,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:44:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:44:52,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2023-11-24 21:44:52,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 147 transitions, 2414 flow. Second operand has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:52,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:52,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2023-11-24 21:44:52,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:53,548 INFO L124 PetriNetUnfolderBase]: 478/1214 cut-off events. [2023-11-24 21:44:53,548 INFO L125 PetriNetUnfolderBase]: For 16545/16631 co-relation queries the response was YES. [2023-11-24 21:44:53,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7258 conditions, 1214 events. 478/1214 cut-off events. For 16545/16631 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8200 event pairs, 148 based on Foata normal form. 66/1273 useless extension candidates. Maximal degree in co-relation 7192. Up to 559 conditions per place. [2023-11-24 21:44:53,559 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 110 selfloop transitions, 47 changer transitions 38/208 dead transitions. [2023-11-24 21:44:53,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 208 transitions, 3319 flow [2023-11-24 21:44:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 21:44:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-24 21:44:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 388 transitions. [2023-11-24 21:44:53,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511363636363636 [2023-11-24 21:44:53,562 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 388 transitions. [2023-11-24 21:44:53,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 388 transitions. [2023-11-24 21:44:53,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:53,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 388 transitions. [2023-11-24 21:44:53,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 24.25) internal successors, (388), 16 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 21:44:53,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 44.0) internal successors, (748), 17 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 21:44:53,566 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 44.0) internal successors, (748), 17 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 21:44:53,566 INFO L175 Difference]: Start difference. First operand has 142 places, 147 transitions, 2414 flow. Second operand 16 states and 388 transitions. [2023-11-24 21:44:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 208 transitions, 3319 flow [2023-11-24 21:44:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 208 transitions, 3215 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-11-24 21:44:53,646 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 2515 flow [2023-11-24 21:44:53,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2515, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2023-11-24 21:44:53,647 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 109 predicate places. [2023-11-24 21:44:53,647 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 2515 flow [2023-11-24 21:44:53,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.333333333333332) internal successors, (232), 12 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:53,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:53,647 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 21:44:53,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-24 21:44:53,648 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-24 21:44:53,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash -114372794, now seen corresponding path program 3 times [2023-11-24 21:44:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103605734] [2023-11-24 21:44:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:54,503 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 21:44:54,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:54,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103605734] [2023-11-24 21:44:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103605734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:54,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:44:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309774510] [2023-11-24 21:44:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:54,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2023-11-24 21:44:54,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 2515 flow. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 21:44:54,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:54,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2023-11-24 21:44:54,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:55,509 INFO L124 PetriNetUnfolderBase]: 709/1372 cut-off events. [2023-11-24 21:44:55,510 INFO L125 PetriNetUnfolderBase]: For 24131/24142 co-relation queries the response was YES. [2023-11-24 21:44:55,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 1372 events. 709/1372 cut-off events. For 24131/24142 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7957 event pairs, 40 based on Foata normal form. 37/1406 useless extension candidates. Maximal degree in co-relation 9443. Up to 570 conditions per place. [2023-11-24 21:44:55,523 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 118 selfloop transitions, 32 changer transitions 85/248 dead transitions. [2023-11-24 21:44:55,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 248 transitions, 4480 flow [2023-11-24 21:44:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:44:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:44:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 302 transitions. [2023-11-24 21:44:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527972027972028 [2023-11-24 21:44:55,525 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 302 transitions. [2023-11-24 21:44:55,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 302 transitions. [2023-11-24 21:44:55,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:55,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 302 transitions. [2023-11-24 21:44:55,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 21:44:55,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 21:44:55,528 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 44.0) internal successors, (616), 14 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 21:44:55,529 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 2515 flow. Second operand 13 states and 302 transitions. [2023-11-24 21:44:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 248 transitions, 4480 flow