./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/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_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/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_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/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 d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:29:55,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:29:55,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:29:55,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:29:55,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:29:55,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:29:55,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:29:55,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:29:55,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:29:55,845 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:29:55,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:29:55,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:29:55,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:29:55,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:29:55,849 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:29:55,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:29:55,850 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:29:55,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:29:55,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:29:55,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:29:55,853 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:29:55,854 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:29:55,854 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:29:55,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:29:55,855 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:29:55,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:29:55,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:29:55,857 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:29:55,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:29:55,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:29:55,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:29:55,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:29:55,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:29:55,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:29:55,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:29:55,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:29:55,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:29:55,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:29:55,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:29:55,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:29:55,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:29:55,864 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_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-24 21:29:56,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:29:56,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:29:56,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:29:56,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:29:56,158 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:29:56,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-24 21:29:59,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:29:59,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:29:59,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-24 21:29:59,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/data/3bf4a32f0/535f105e93664e9a8c11d9ffbaceabca/FLAG224afbcdd [2023-11-24 21:29:59,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/data/3bf4a32f0/535f105e93664e9a8c11d9ffbaceabca [2023-11-24 21:29:59,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:29:59,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:29:59,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:59,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:29:59,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:29:59,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c32fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59, skipping insertion in model container [2023-11-24 21:29:59,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,599 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:29:59,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:59,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:29:59,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:59,882 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:29:59,882 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:29:59,891 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:29:59,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59 WrapperNode [2023-11-24 21:29:59,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:59,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:29:59,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:29:59,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:29:59,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,950 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 211 [2023-11-24 21:29:59,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:29:59,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:29:59,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:29:59,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:29:59,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,991 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 21:29:59,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:29:59,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:30:00,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:30:00,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:30:00,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:30:00,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:30:00,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:30:00,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:30:00,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:30:00,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:30:00,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (1/1) ... [2023-11-24 21:30:00,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:30:00,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:30:00,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:30:00,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85ae9cfd-fe8a-4980-9ab5-d49246aeb0e0/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:30:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:30:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:30:00,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:30:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:30:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:30:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:30:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:30:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-24 21:30:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-24 21:30:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:30:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:30:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:30:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:30:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:30:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:30:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:30:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:30:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:30:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:30:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:30:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:30:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:30:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:30:00,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:30:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:30:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:30:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:30:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:30:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:30:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:30:00,128 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 21:30:00,289 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:30:00,291 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:30:00,684 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:30:01,036 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:30:01,036 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:30:01,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:30:01 BoogieIcfgContainer [2023-11-24 21:30:01,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:30:01,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:30:01,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:30:01,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:30:01,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:29:59" (1/3) ... [2023-11-24 21:30:01,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9c04f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:30:01, skipping insertion in model container [2023-11-24 21:30:01,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:59" (2/3) ... [2023-11-24 21:30:01,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9c04f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:30:01, skipping insertion in model container [2023-11-24 21:30:01,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:30:01" (3/3) ... [2023-11-24 21:30:01,052 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-24 21:30:01,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:30:01,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-24 21:30:01,073 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:30:01,146 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 21:30:01,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 74 transitions, 176 flow [2023-11-24 21:30:01,283 INFO L124 PetriNetUnfolderBase]: 0/70 cut-off events. [2023-11-24 21:30:01,283 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:30:01,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 70 events. 0/70 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 21:30:01,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 74 transitions, 176 flow [2023-11-24 21:30:01,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 69 transitions, 162 flow [2023-11-24 21:30:01,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:30:01,309 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;@4df54e32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:30:01,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-24 21:30:01,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:30:01,312 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:30:01,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:30:01,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:01,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:30:01,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:01,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 14374, now seen corresponding path program 1 times [2023-11-24 21:30:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:01,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317009908] [2023-11-24 21:30:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:01,903 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 21:30:01,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317009908] [2023-11-24 21:30:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317009908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832266845] [2023-11-24 21:30:01,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:01,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:02,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2023-11-24 21:30:02,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2023-11-24 21:30:02,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:03,615 INFO L124 PetriNetUnfolderBase]: 6408/10274 cut-off events. [2023-11-24 21:30:03,615 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2023-11-24 21:30:03,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19500 conditions, 10274 events. 6408/10274 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 68975 event pairs, 6408 based on Foata normal form. 1/9821 useless extension candidates. Maximal degree in co-relation 17706. Up to 8752 conditions per place. [2023-11-24 21:30:03,765 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 31 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-11-24 21:30:03,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 218 flow [2023-11-24 21:30:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 21:30:03,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711711711711712 [2023-11-24 21:30:03,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 21:30:03,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 21:30:03,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:03,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 21:30:03,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 21:30:03,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:03,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:03,799 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 162 flow. Second operand 3 states and 149 transitions. [2023-11-24 21:30:03,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 218 flow [2023-11-24 21:30:03,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 202 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-24 21:30:03,825 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 140 flow [2023-11-24 21:30:03,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2023-11-24 21:30:03,838 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-11-24 21:30:03,839 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 140 flow [2023-11-24 21:30:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:03,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:03,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:30:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:30:03,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:03,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash 14375, now seen corresponding path program 1 times [2023-11-24 21:30:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446732077] [2023-11-24 21:30:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:04,212 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 21:30:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446732077] [2023-11-24 21:30:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446732077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:04,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:04,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051864582] [2023-11-24 21:30:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:04,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:04,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:04,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:04,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2023-11-24 21:30:04,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 21:30:04,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:04,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2023-11-24 21:30:04,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:05,239 INFO L124 PetriNetUnfolderBase]: 4408/7134 cut-off events. [2023-11-24 21:30:05,239 INFO L125 PetriNetUnfolderBase]: For 155/158 co-relation queries the response was YES. [2023-11-24 21:30:05,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13420 conditions, 7134 events. 4408/7134 cut-off events. For 155/158 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 46511 event pairs, 4408 based on Foata normal form. 626/7508 useless extension candidates. Maximal degree in co-relation 13414. Up to 6126 conditions per place. [2023-11-24 21:30:05,302 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 29 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-11-24 21:30:05,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 196 flow [2023-11-24 21:30:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-24 21:30:05,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2023-11-24 21:30:05,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-24 21:30:05,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-24 21:30:05,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:05,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-24 21:30:05,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:05,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:05,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:05,314 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 140 flow. Second operand 3 states and 152 transitions. [2023-11-24 21:30:05,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 196 flow [2023-11-24 21:30:05,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 63 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:05,317 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 137 flow [2023-11-24 21:30:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-11-24 21:30:05,320 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-11-24 21:30:05,320 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 137 flow [2023-11-24 21:30:05,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 21:30:05,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:05,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:30:05,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:30:05,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:05,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:05,322 INFO L85 PathProgramCache]: Analyzing trace with hash 428666861, now seen corresponding path program 1 times [2023-11-24 21:30:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648254473] [2023-11-24 21:30:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:05,409 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 21:30:05,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:05,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648254473] [2023-11-24 21:30:05,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648254473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:05,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:05,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:05,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139847557] [2023-11-24 21:30:05,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:05,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:05,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:05,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:05,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:05,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2023-11-24 21:30:05,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 21:30:05,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:05,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2023-11-24 21:30:05,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:06,382 INFO L124 PetriNetUnfolderBase]: 4712/7583 cut-off events. [2023-11-24 21:30:06,383 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-11-24 21:30:06,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14304 conditions, 7583 events. 4712/7583 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 48818 event pairs, 4712 based on Foata normal form. 0/7355 useless extension candidates. Maximal degree in co-relation 14297. Up to 6560 conditions per place. [2023-11-24 21:30:06,443 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 31 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-11-24 21:30:06,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 197 flow [2023-11-24 21:30:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-24 21:30:06,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:30:06,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-24 21:30:06,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-24 21:30:06,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:06,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-24 21:30:06,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 21:30:06,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:06,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:06,455 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 137 flow. Second operand 3 states and 148 transitions. [2023-11-24 21:30:06,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 197 flow [2023-11-24 21:30:06,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:06,459 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 134 flow [2023-11-24 21:30:06,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-11-24 21:30:06,461 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-11-24 21:30:06,461 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 134 flow [2023-11-24 21:30:06,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 21:30:06,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:06,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:30:06,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:30:06,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:06,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 428666862, now seen corresponding path program 1 times [2023-11-24 21:30:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:06,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290250020] [2023-11-24 21:30:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:06,711 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 21:30:06,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290250020] [2023-11-24 21:30:06,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290250020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:06,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:06,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:06,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895081182] [2023-11-24 21:30:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:06,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:06,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:06,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:06,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:06,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2023-11-24 21:30:06,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 21:30:06,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:06,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2023-11-24 21:30:06,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:07,420 INFO L124 PetriNetUnfolderBase]: 4408/7050 cut-off events. [2023-11-24 21:30:07,420 INFO L125 PetriNetUnfolderBase]: For 155/158 co-relation queries the response was YES. [2023-11-24 21:30:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13338 conditions, 7050 events. 4408/7050 cut-off events. For 155/158 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 45319 event pairs, 4408 based on Foata normal form. 100/6982 useless extension candidates. Maximal degree in co-relation 13330. Up to 6126 conditions per place. [2023-11-24 21:30:07,475 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 29 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-11-24 21:30:07,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 190 flow [2023-11-24 21:30:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-24 21:30:07,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2023-11-24 21:30:07,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-24 21:30:07,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-24 21:30:07,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:07,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-24 21:30:07,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:07,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:07,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:07,481 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 134 flow. Second operand 3 states and 152 transitions. [2023-11-24 21:30:07,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 190 flow [2023-11-24 21:30:07,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:07,484 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 131 flow [2023-11-24 21:30:07,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-11-24 21:30:07,487 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-11-24 21:30:07,487 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 131 flow [2023-11-24 21:30:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 21:30:07,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:07,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:30:07,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:07,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1477139699, now seen corresponding path program 1 times [2023-11-24 21:30:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:07,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210652476] [2023-11-24 21:30:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:07,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:07,602 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 21:30:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210652476] [2023-11-24 21:30:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210652476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:07,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649151107] [2023-11-24 21:30:07,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:07,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:07,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2023-11-24 21:30:07,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 21:30:07,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:07,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2023-11-24 21:30:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:08,591 INFO L124 PetriNetUnfolderBase]: 4488/7168 cut-off events. [2023-11-24 21:30:08,592 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-24 21:30:08,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13587 conditions, 7168 events. 4488/7168 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 45766 event pairs, 4488 based on Foata normal form. 0/7020 useless extension candidates. Maximal degree in co-relation 13578. Up to 6256 conditions per place. [2023-11-24 21:30:08,667 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 31 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-24 21:30:08,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 191 flow [2023-11-24 21:30:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-24 21:30:08,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:30:08,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-24 21:30:08,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-24 21:30:08,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:08,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-24 21:30:08,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 21:30:08,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:08,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:08,674 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 131 flow. Second operand 3 states and 148 transitions. [2023-11-24 21:30:08,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 191 flow [2023-11-24 21:30:08,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 57 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:08,678 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 128 flow [2023-11-24 21:30:08,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-24 21:30:08,682 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-11-24 21:30:08,683 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 128 flow [2023-11-24 21:30:08,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 21:30:08,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:08,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:08,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:30:08,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:08,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1477139700, now seen corresponding path program 1 times [2023-11-24 21:30:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183110943] [2023-11-24 21:30:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:08,899 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 21:30:08,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183110943] [2023-11-24 21:30:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183110943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:08,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:08,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446779690] [2023-11-24 21:30:08,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:08,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:08,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2023-11-24 21:30:08,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 21:30:08,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:08,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2023-11-24 21:30:08,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:09,812 INFO L124 PetriNetUnfolderBase]: 4408/7018 cut-off events. [2023-11-24 21:30:09,813 INFO L125 PetriNetUnfolderBase]: For 155/158 co-relation queries the response was YES. [2023-11-24 21:30:09,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13308 conditions, 7018 events. 4408/7018 cut-off events. For 155/158 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 44966 event pairs, 4408 based on Foata normal form. 44/6926 useless extension candidates. Maximal degree in co-relation 13298. Up to 6126 conditions per place. [2023-11-24 21:30:09,885 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 29 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-24 21:30:09,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 184 flow [2023-11-24 21:30:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-24 21:30:09,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2023-11-24 21:30:09,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-24 21:30:09,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-24 21:30:09,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:09,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-24 21:30:09,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:09,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:09,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:09,892 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 128 flow. Second operand 3 states and 152 transitions. [2023-11-24 21:30:09,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 184 flow [2023-11-24 21:30:09,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:09,896 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 125 flow [2023-11-24 21:30:09,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2023-11-24 21:30:09,900 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-11-24 21:30:09,901 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 125 flow [2023-11-24 21:30:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 21:30:09,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:09,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:09,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:30:09,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:09,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:09,903 INFO L85 PathProgramCache]: Analyzing trace with hash -765687726, now seen corresponding path program 1 times [2023-11-24 21:30:09,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:09,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333377552] [2023-11-24 21:30:09,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:09,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:09,985 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 21:30:09,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:09,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333377552] [2023-11-24 21:30:09,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333377552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:09,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:09,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25820179] [2023-11-24 21:30:09,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:09,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:09,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:10,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 74 [2023-11-24 21:30:10,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 21:30:10,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:10,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 74 [2023-11-24 21:30:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:10,892 INFO L124 PetriNetUnfolderBase]: 4712/7404 cut-off events. [2023-11-24 21:30:10,892 INFO L125 PetriNetUnfolderBase]: For 155/158 co-relation queries the response was YES. [2023-11-24 21:30:10,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 7404 events. 4712/7404 cut-off events. For 155/158 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 46948 event pairs, 4712 based on Foata normal form. 0/7356 useless extension candidates. Maximal degree in co-relation 14118. Up to 6560 conditions per place. [2023-11-24 21:30:10,944 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 31 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-24 21:30:10,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 185 flow [2023-11-24 21:30:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-24 21:30:10,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:30:10,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-24 21:30:10,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-24 21:30:10,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:10,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-24 21:30:10,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 21:30:10,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:10,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:10,951 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 125 flow. Second operand 3 states and 148 transitions. [2023-11-24 21:30:10,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 185 flow [2023-11-24 21:30:10,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:10,956 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 122 flow [2023-11-24 21:30:10,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-11-24 21:30:10,957 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2023-11-24 21:30:10,957 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 122 flow [2023-11-24 21:30:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 21:30:10,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:10,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:10,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:30:10,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:10,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:10,959 INFO L85 PathProgramCache]: Analyzing trace with hash -765687725, now seen corresponding path program 1 times [2023-11-24 21:30:10,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:10,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750401540] [2023-11-24 21:30:10,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:10,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:11,081 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 21:30:11,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:11,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750401540] [2023-11-24 21:30:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750401540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:11,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69023649] [2023-11-24 21:30:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:11,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2023-11-24 21:30:11,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 21:30:11,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:11,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2023-11-24 21:30:11,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:11,760 INFO L124 PetriNetUnfolderBase]: 4408/6934 cut-off events. [2023-11-24 21:30:11,761 INFO L125 PetriNetUnfolderBase]: For 155/158 co-relation queries the response was YES. [2023-11-24 21:30:11,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13226 conditions, 6934 events. 4408/6934 cut-off events. For 155/158 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43789 event pairs, 4408 based on Foata normal form. 129/7011 useless extension candidates. Maximal degree in co-relation 13214. Up to 6126 conditions per place. [2023-11-24 21:30:11,827 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 29 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-24 21:30:11,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 178 flow [2023-11-24 21:30:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-24 21:30:11,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2023-11-24 21:30:11,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-24 21:30:11,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-24 21:30:11,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:11,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-24 21:30:11,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:11,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:11,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 21:30:11,832 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 122 flow. Second operand 3 states and 152 transitions. [2023-11-24 21:30:11,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 178 flow [2023-11-24 21:30:11,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 51 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:11,834 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 119 flow [2023-11-24 21:30:11,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2023-11-24 21:30:11,837 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -17 predicate places. [2023-11-24 21:30:11,837 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 119 flow [2023-11-24 21:30:11,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 21:30:11,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:11,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:11,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:30:11,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:11,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2141633446, now seen corresponding path program 1 times [2023-11-24 21:30:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:11,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516113784] [2023-11-24 21:30:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:11,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:12,679 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 21:30:12,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:12,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516113784] [2023-11-24 21:30:12,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516113784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:12,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:12,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:30:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452390375] [2023-11-24 21:30:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:12,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:30:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:30:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:30:12,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 74 [2023-11-24 21:30:12,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 21:30:12,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:12,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 74 [2023-11-24 21:30:12,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:14,615 INFO L124 PetriNetUnfolderBase]: 15778/22434 cut-off events. [2023-11-24 21:30:14,616 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2023-11-24 21:30:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44516 conditions, 22434 events. 15778/22434 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 134399 event pairs, 4757 based on Foata normal form. 1/22408 useless extension candidates. Maximal degree in co-relation 44503. Up to 10911 conditions per place. [2023-11-24 21:30:14,785 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 96 selfloop transitions, 12 changer transitions 11/135 dead transitions. [2023-11-24 21:30:14,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 135 transitions, 539 flow [2023-11-24 21:30:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:30:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:30:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 342 transitions. [2023-11-24 21:30:14,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2023-11-24 21:30:14,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 342 transitions. [2023-11-24 21:30:14,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 342 transitions. [2023-11-24 21:30:14,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:14,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 342 transitions. [2023-11-24 21:30:14,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 21:30:14,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 21:30:14,793 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 21:30:14,794 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 119 flow. Second operand 6 states and 342 transitions. [2023-11-24 21:30:14,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 135 transitions, 539 flow [2023-11-24 21:30:14,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 135 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:14,798 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 198 flow [2023-11-24 21:30:14,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-11-24 21:30:14,799 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-11-24 21:30:14,799 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 198 flow [2023-11-24 21:30:14,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 21:30:14,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:14,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:14,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:30:14,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:14,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1535419374, now seen corresponding path program 2 times [2023-11-24 21:30:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830562152] [2023-11-24 21:30:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:14,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:14,979 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 21:30:14,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830562152] [2023-11-24 21:30:14,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830562152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:14,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:14,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540502064] [2023-11-24 21:30:14,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:14,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:30:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:14,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:30:14,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:30:14,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:14,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:14,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:14,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:14,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:16,403 INFO L124 PetriNetUnfolderBase]: 7769/12317 cut-off events. [2023-11-24 21:30:16,404 INFO L125 PetriNetUnfolderBase]: For 576/601 co-relation queries the response was YES. [2023-11-24 21:30:16,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24886 conditions, 12317 events. 7769/12317 cut-off events. For 576/601 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 83003 event pairs, 1266 based on Foata normal form. 18/11976 useless extension candidates. Maximal degree in co-relation 24869. Up to 3559 conditions per place. [2023-11-24 21:30:16,535 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 82 selfloop transitions, 33 changer transitions 1/150 dead transitions. [2023-11-24 21:30:16,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 150 transitions, 620 flow [2023-11-24 21:30:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:30:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:30:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-11-24 21:30:16,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7934362934362934 [2023-11-24 21:30:16,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-11-24 21:30:16,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-11-24 21:30:16,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:16,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-11-24 21:30:16,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:16,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 21:30:16,543 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 21:30:16,544 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 198 flow. Second operand 7 states and 411 transitions. [2023-11-24 21:30:16,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 150 transitions, 620 flow [2023-11-24 21:30:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 150 transitions, 612 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:16,583 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 324 flow [2023-11-24 21:30:16,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2023-11-24 21:30:16,585 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2023-11-24 21:30:16,586 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 324 flow [2023-11-24 21:30:16,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:16,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:16,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:16,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:30:16,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:16,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1645735690, now seen corresponding path program 3 times [2023-11-24 21:30:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:16,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047751347] [2023-11-24 21:30:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:16,768 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 21:30:16,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:16,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047751347] [2023-11-24 21:30:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047751347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:16,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:16,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:30:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627291186] [2023-11-24 21:30:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:16,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:16,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:16,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:16,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:16,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:18,993 INFO L124 PetriNetUnfolderBase]: 12614/20365 cut-off events. [2023-11-24 21:30:18,994 INFO L125 PetriNetUnfolderBase]: For 5916/6061 co-relation queries the response was YES. [2023-11-24 21:30:19,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47686 conditions, 20365 events. 12614/20365 cut-off events. For 5916/6061 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 151818 event pairs, 2966 based on Foata normal form. 246/20367 useless extension candidates. Maximal degree in co-relation 47667. Up to 6862 conditions per place. [2023-11-24 21:30:19,219 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 97 selfloop transitions, 43 changer transitions 0/174 dead transitions. [2023-11-24 21:30:19,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 174 transitions, 869 flow [2023-11-24 21:30:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:30:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:30:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 304 transitions. [2023-11-24 21:30:19,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8216216216216217 [2023-11-24 21:30:19,222 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 304 transitions. [2023-11-24 21:30:19,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 304 transitions. [2023-11-24 21:30:19,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:19,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 304 transitions. [2023-11-24 21:30:19,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:19,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:19,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:19,226 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 324 flow. Second operand 5 states and 304 transitions. [2023-11-24 21:30:19,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 174 transitions, 869 flow [2023-11-24 21:30:19,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 174 transitions, 864 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:19,316 INFO L231 Difference]: Finished difference. Result has 83 places, 124 transitions, 628 flow [2023-11-24 21:30:19,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=628, PETRI_PLACES=83, PETRI_TRANSITIONS=124} [2023-11-24 21:30:19,317 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2023-11-24 21:30:19,318 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 124 transitions, 628 flow [2023-11-24 21:30:19,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:19,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:19,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:19,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:30:19,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:19,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash -667891450, now seen corresponding path program 4 times [2023-11-24 21:30:19,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:19,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044841863] [2023-11-24 21:30:19,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:19,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:19,566 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 21:30:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044841863] [2023-11-24 21:30:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044841863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:30:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199947621] [2023-11-24 21:30:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:30:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:30:19,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:30:19,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:19,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 124 transitions, 628 flow. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 21:30:19,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:19,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:19,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:22,231 INFO L124 PetriNetUnfolderBase]: 14879/24126 cut-off events. [2023-11-24 21:30:22,231 INFO L125 PetriNetUnfolderBase]: For 24012/24364 co-relation queries the response was YES. [2023-11-24 21:30:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66991 conditions, 24126 events. 14879/24126 cut-off events. For 24012/24364 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 186662 event pairs, 3004 based on Foata normal form. 280/23841 useless extension candidates. Maximal degree in co-relation 66969. Up to 8329 conditions per place. [2023-11-24 21:30:22,477 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 98 selfloop transitions, 78 changer transitions 2/212 dead transitions. [2023-11-24 21:30:22,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 212 transitions, 1320 flow [2023-11-24 21:30:22,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:30:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:30:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 372 transitions. [2023-11-24 21:30:22,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2023-11-24 21:30:22,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 372 transitions. [2023-11-24 21:30:22,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 372 transitions. [2023-11-24 21:30:22,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:22,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 372 transitions. [2023-11-24 21:30:22,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.0) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 21:30:22,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 21:30:22,486 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 21:30:22,487 INFO L175 Difference]: Start difference. First operand has 83 places, 124 transitions, 628 flow. Second operand 6 states and 372 transitions. [2023-11-24 21:30:22,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 212 transitions, 1320 flow [2023-11-24 21:30:22,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 212 transitions, 1303 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:22,627 INFO L231 Difference]: Finished difference. Result has 89 places, 149 transitions, 998 flow [2023-11-24 21:30:22,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=998, PETRI_PLACES=89, PETRI_TRANSITIONS=149} [2023-11-24 21:30:22,628 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2023-11-24 21:30:22,629 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 149 transitions, 998 flow [2023-11-24 21:30:22,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 21:30:22,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:22,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:22,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:30:22,630 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:22,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash -79263074, now seen corresponding path program 5 times [2023-11-24 21:30:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:22,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133103445] [2023-11-24 21:30:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:22,786 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 21:30:22,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133103445] [2023-11-24 21:30:22,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133103445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:22,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:22,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:30:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474792413] [2023-11-24 21:30:22,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:22,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:22,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:22,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 149 transitions, 998 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:22,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:22,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:22,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:25,358 INFO L124 PetriNetUnfolderBase]: 14604/23892 cut-off events. [2023-11-24 21:30:25,359 INFO L125 PetriNetUnfolderBase]: For 45764/46263 co-relation queries the response was YES. [2023-11-24 21:30:25,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74125 conditions, 23892 events. 14604/23892 cut-off events. For 45764/46263 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 185373 event pairs, 3662 based on Foata normal form. 486/24128 useless extension candidates. Maximal degree in co-relation 74100. Up to 9612 conditions per place. [2023-11-24 21:30:25,583 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 117 selfloop transitions, 59 changer transitions 0/210 dead transitions. [2023-11-24 21:30:25,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 210 transitions, 1601 flow [2023-11-24 21:30:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:30:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:30:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2023-11-24 21:30:25,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.827027027027027 [2023-11-24 21:30:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 306 transitions. [2023-11-24 21:30:25,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 306 transitions. [2023-11-24 21:30:25,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:25,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 306 transitions. [2023-11-24 21:30:25,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 21:30:25,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:25,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:25,590 INFO L175 Difference]: Start difference. First operand has 89 places, 149 transitions, 998 flow. Second operand 5 states and 306 transitions. [2023-11-24 21:30:25,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 210 transitions, 1601 flow [2023-11-24 21:30:25,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 210 transitions, 1595 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-24 21:30:25,790 INFO L231 Difference]: Finished difference. Result has 95 places, 159 transitions, 1260 flow [2023-11-24 21:30:25,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1260, PETRI_PLACES=95, PETRI_TRANSITIONS=159} [2023-11-24 21:30:25,792 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 13 predicate places. [2023-11-24 21:30:25,792 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 159 transitions, 1260 flow [2023-11-24 21:30:25,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:25,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:25,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:25,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:30:25,793 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:25,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash -28809974, now seen corresponding path program 6 times [2023-11-24 21:30:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:25,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724547676] [2023-11-24 21:30:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:25,925 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 21:30:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724547676] [2023-11-24 21:30:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724547676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:25,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:30:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493369702] [2023-11-24 21:30:25,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:25,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:25,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 159 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:25,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:25,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:25,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:28,306 INFO L124 PetriNetUnfolderBase]: 14373/23514 cut-off events. [2023-11-24 21:30:28,306 INFO L125 PetriNetUnfolderBase]: For 66042/66489 co-relation queries the response was YES. [2023-11-24 21:30:28,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79283 conditions, 23514 events. 14373/23514 cut-off events. For 66042/66489 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 183152 event pairs, 3676 based on Foata normal form. 584/23788 useless extension candidates. Maximal degree in co-relation 79254. Up to 9817 conditions per place. [2023-11-24 21:30:28,499 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 115 selfloop transitions, 68 changer transitions 5/222 dead transitions. [2023-11-24 21:30:28,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 222 transitions, 1944 flow [2023-11-24 21:30:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:30:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:30:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2023-11-24 21:30:28,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8324324324324325 [2023-11-24 21:30:28,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 308 transitions. [2023-11-24 21:30:28,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 308 transitions. [2023-11-24 21:30:28,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:28,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 308 transitions. [2023-11-24 21:30:28,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:28,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:28,505 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:28,505 INFO L175 Difference]: Start difference. First operand has 95 places, 159 transitions, 1260 flow. Second operand 5 states and 308 transitions. [2023-11-24 21:30:28,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 222 transitions, 1944 flow [2023-11-24 21:30:28,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 222 transitions, 1848 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-24 21:30:28,660 INFO L231 Difference]: Finished difference. Result has 98 places, 169 transitions, 1493 flow [2023-11-24 21:30:28,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1493, PETRI_PLACES=98, PETRI_TRANSITIONS=169} [2023-11-24 21:30:28,661 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2023-11-24 21:30:28,661 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 169 transitions, 1493 flow [2023-11-24 21:30:28,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:28,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:28,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:30:28,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:28,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1235756166, now seen corresponding path program 7 times [2023-11-24 21:30:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125567496] [2023-11-24 21:30:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:28,791 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 21:30:28,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125567496] [2023-11-24 21:30:28,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125567496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:28,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:30:28,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020900024] [2023-11-24 21:30:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:28,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:28,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:28,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 169 transitions, 1493 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:28,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:28,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:28,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:30,943 INFO L124 PetriNetUnfolderBase]: 10288/17452 cut-off events. [2023-11-24 21:30:30,943 INFO L125 PetriNetUnfolderBase]: For 57622/58510 co-relation queries the response was YES. [2023-11-24 21:30:31,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59817 conditions, 17452 events. 10288/17452 cut-off events. For 57622/58510 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 132395 event pairs, 2558 based on Foata normal form. 715/17993 useless extension candidates. Maximal degree in co-relation 59787. Up to 7617 conditions per place. [2023-11-24 21:30:31,130 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 111 selfloop transitions, 76 changer transitions 0/217 dead transitions. [2023-11-24 21:30:31,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 217 transitions, 2103 flow [2023-11-24 21:30:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:30:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:30:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 303 transitions. [2023-11-24 21:30:31,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8189189189189189 [2023-11-24 21:30:31,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 303 transitions. [2023-11-24 21:30:31,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 303 transitions. [2023-11-24 21:30:31,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:31,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 303 transitions. [2023-11-24 21:30:31,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.6) internal successors, (303), 5 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 21:30:31,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:31,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:30:31,137 INFO L175 Difference]: Start difference. First operand has 98 places, 169 transitions, 1493 flow. Second operand 5 states and 303 transitions. [2023-11-24 21:30:31,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 217 transitions, 2103 flow [2023-11-24 21:30:31,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 217 transitions, 2019 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-24 21:30:31,289 INFO L231 Difference]: Finished difference. Result has 100 places, 174 transitions, 1734 flow [2023-11-24 21:30:31,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1734, PETRI_PLACES=100, PETRI_TRANSITIONS=174} [2023-11-24 21:30:31,290 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 18 predicate places. [2023-11-24 21:30:31,290 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 174 transitions, 1734 flow [2023-11-24 21:30:31,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:31,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:31,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:30:31,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:31,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1769705516, now seen corresponding path program 8 times [2023-11-24 21:30:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776367192] [2023-11-24 21:30:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776367192] [2023-11-24 21:30:31,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776367192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:30:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6824096] [2023-11-24 21:30:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:30:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:31,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:30:31,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:30:31,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:31,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 174 transitions, 1734 flow. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 21:30:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:31,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:31,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:33,843 INFO L124 PetriNetUnfolderBase]: 10330/17463 cut-off events. [2023-11-24 21:30:33,843 INFO L125 PetriNetUnfolderBase]: For 66795/67784 co-relation queries the response was YES. [2023-11-24 21:30:33,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62960 conditions, 17463 events. 10330/17463 cut-off events. For 66795/67784 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 133175 event pairs, 2065 based on Foata normal form. 563/17552 useless extension candidates. Maximal degree in co-relation 62929. Up to 5421 conditions per place. [2023-11-24 21:30:34,019 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 98 selfloop transitions, 114 changer transitions 2/244 dead transitions. [2023-11-24 21:30:34,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 244 transitions, 2506 flow [2023-11-24 21:30:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:30:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:30:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2023-11-24 21:30:34,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8288288288288288 [2023-11-24 21:30:34,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 368 transitions. [2023-11-24 21:30:34,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 368 transitions. [2023-11-24 21:30:34,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:34,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 368 transitions. [2023-11-24 21:30:34,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.333333333333336) internal successors, (368), 6 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 21:30:34,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 21:30:34,025 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 21:30:34,025 INFO L175 Difference]: Start difference. First operand has 100 places, 174 transitions, 1734 flow. Second operand 6 states and 368 transitions. [2023-11-24 21:30:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 244 transitions, 2506 flow [2023-11-24 21:30:34,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 244 transitions, 2416 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:34,211 INFO L231 Difference]: Finished difference. Result has 104 places, 181 transitions, 2023 flow [2023-11-24 21:30:34,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2023, PETRI_PLACES=104, PETRI_TRANSITIONS=181} [2023-11-24 21:30:34,226 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 22 predicate places. [2023-11-24 21:30:34,227 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 181 transitions, 2023 flow [2023-11-24 21:30:34,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 21:30:34,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:34,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:34,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:30:34,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:34,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash 570419484, now seen corresponding path program 9 times [2023-11-24 21:30:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:34,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263660436] [2023-11-24 21:30:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:34,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:34,446 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 21:30:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263660436] [2023-11-24 21:30:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263660436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:34,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991295967] [2023-11-24 21:30:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:30:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:30:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:30:34,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:34,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 181 transitions, 2023 flow. Second operand has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:34,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:34,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:34,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:37,094 INFO L124 PetriNetUnfolderBase]: 10569/17953 cut-off events. [2023-11-24 21:30:37,094 INFO L125 PetriNetUnfolderBase]: For 84848/86001 co-relation queries the response was YES. [2023-11-24 21:30:37,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68218 conditions, 17953 events. 10569/17953 cut-off events. For 84848/86001 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 138470 event pairs, 2150 based on Foata normal form. 666/18113 useless extension candidates. Maximal degree in co-relation 68186. Up to 5435 conditions per place. [2023-11-24 21:30:37,263 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 116 selfloop transitions, 128 changer transitions 1/275 dead transitions. [2023-11-24 21:30:37,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 275 transitions, 3038 flow [2023-11-24 21:30:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:30:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:30:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 480 transitions. [2023-11-24 21:30:37,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2023-11-24 21:30:37,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 480 transitions. [2023-11-24 21:30:37,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 480 transitions. [2023-11-24 21:30:37,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:37,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 480 transitions. [2023-11-24 21:30:37,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 21:30:37,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 21:30:37,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 21:30:37,272 INFO L175 Difference]: Start difference. First operand has 104 places, 181 transitions, 2023 flow. Second operand 8 states and 480 transitions. [2023-11-24 21:30:37,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 275 transitions, 3038 flow [2023-11-24 21:30:37,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 275 transitions, 2842 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 21:30:37,427 INFO L231 Difference]: Finished difference. Result has 109 places, 195 transitions, 2370 flow [2023-11-24 21:30:37,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2370, PETRI_PLACES=109, PETRI_TRANSITIONS=195} [2023-11-24 21:30:37,428 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 27 predicate places. [2023-11-24 21:30:37,429 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 195 transitions, 2370 flow [2023-11-24 21:30:37,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:37,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:37,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:37,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:30:37,430 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:37,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash -412282504, now seen corresponding path program 10 times [2023-11-24 21:30:37,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789959889] [2023-11-24 21:30:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789959889] [2023-11-24 21:30:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789959889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:37,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688541951] [2023-11-24 21:30:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:37,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:30:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:30:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:30:37,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:37,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 195 transitions, 2370 flow. Second operand has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:37,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:37,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:37,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:39,766 INFO L124 PetriNetUnfolderBase]: 10357/17873 cut-off events. [2023-11-24 21:30:39,766 INFO L125 PetriNetUnfolderBase]: For 85795/86553 co-relation queries the response was YES. [2023-11-24 21:30:39,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68468 conditions, 17873 events. 10357/17873 cut-off events. For 85795/86553 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 140046 event pairs, 2043 based on Foata normal form. 578/18014 useless extension candidates. Maximal degree in co-relation 68435. Up to 5407 conditions per place. [2023-11-24 21:30:39,921 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 115 selfloop transitions, 134 changer transitions 16/295 dead transitions. [2023-11-24 21:30:39,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 295 transitions, 3462 flow [2023-11-24 21:30:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:30:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:30:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 486 transitions. [2023-11-24 21:30:39,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8209459459459459 [2023-11-24 21:30:39,924 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 486 transitions. [2023-11-24 21:30:39,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 486 transitions. [2023-11-24 21:30:39,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:39,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 486 transitions. [2023-11-24 21:30:39,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.75) internal successors, (486), 8 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 21:30:39,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 21:30:39,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 21:30:39,929 INFO L175 Difference]: Start difference. First operand has 109 places, 195 transitions, 2370 flow. Second operand 8 states and 486 transitions. [2023-11-24 21:30:39,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 295 transitions, 3462 flow [2023-11-24 21:30:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 295 transitions, 3281 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:30:40,086 INFO L231 Difference]: Finished difference. Result has 115 places, 201 transitions, 2591 flow [2023-11-24 21:30:40,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2591, PETRI_PLACES=115, PETRI_TRANSITIONS=201} [2023-11-24 21:30:40,087 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2023-11-24 21:30:40,087 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 201 transitions, 2591 flow [2023-11-24 21:30:40,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:40,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:40,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:40,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:30:40,088 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:40,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 461072162, now seen corresponding path program 11 times [2023-11-24 21:30:40,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:40,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861613941] [2023-11-24 21:30:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:40,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:40,294 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 21:30:40,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:40,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861613941] [2023-11-24 21:30:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861613941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:40,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:40,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:40,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445411872] [2023-11-24 21:30:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:40,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:30:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:30:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:30:40,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:40,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 201 transitions, 2591 flow. Second operand has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:40,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:40,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:40,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:42,027 INFO L124 PetriNetUnfolderBase]: 7702/13407 cut-off events. [2023-11-24 21:30:42,027 INFO L125 PetriNetUnfolderBase]: For 66707/67247 co-relation queries the response was YES. [2023-11-24 21:30:42,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53116 conditions, 13407 events. 7702/13407 cut-off events. For 66707/67247 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 100173 event pairs, 1598 based on Foata normal form. 734/13935 useless extension candidates. Maximal degree in co-relation 53081. Up to 3783 conditions per place. [2023-11-24 21:30:42,189 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 107 selfloop transitions, 129 changer transitions 32/297 dead transitions. [2023-11-24 21:30:42,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 297 transitions, 3785 flow [2023-11-24 21:30:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:30:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:30:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 480 transitions. [2023-11-24 21:30:42,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2023-11-24 21:30:42,192 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 480 transitions. [2023-11-24 21:30:42,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 480 transitions. [2023-11-24 21:30:42,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:42,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 480 transitions. [2023-11-24 21:30:42,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 21:30:42,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 21:30:42,195 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 21:30:42,195 INFO L175 Difference]: Start difference. First operand has 115 places, 201 transitions, 2591 flow. Second operand 8 states and 480 transitions. [2023-11-24 21:30:42,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 297 transitions, 3785 flow [2023-11-24 21:30:42,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 297 transitions, 3533 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-24 21:30:42,319 INFO L231 Difference]: Finished difference. Result has 119 places, 193 transitions, 2572 flow [2023-11-24 21:30:42,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2572, PETRI_PLACES=119, PETRI_TRANSITIONS=193} [2023-11-24 21:30:42,320 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 37 predicate places. [2023-11-24 21:30:42,320 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 193 transitions, 2572 flow [2023-11-24 21:30:42,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.285714285714285) internal successors, (324), 7 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:30:42,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:42,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:42,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:30:42,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:42,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1255454688, now seen corresponding path program 12 times [2023-11-24 21:30:42,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:42,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863264549] [2023-11-24 21:30:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:42,492 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 21:30:42,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:42,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863264549] [2023-11-24 21:30:42,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863264549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:42,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:42,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:30:42,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938300188] [2023-11-24 21:30:42,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:42,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:30:42,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:30:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:30:42,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:42,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 193 transitions, 2572 flow. Second operand has 8 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states 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 21:30:42,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:42,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:42,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:44,055 INFO L124 PetriNetUnfolderBase]: 6661/11687 cut-off events. [2023-11-24 21:30:44,055 INFO L125 PetriNetUnfolderBase]: For 62626/62936 co-relation queries the response was YES. [2023-11-24 21:30:44,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45977 conditions, 11687 events. 6661/11687 cut-off events. For 62626/62936 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 86245 event pairs, 1504 based on Foata normal form. 384/11835 useless extension candidates. Maximal degree in co-relation 45941. Up to 3757 conditions per place. [2023-11-24 21:30:44,156 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 94 selfloop transitions, 129 changer transitions 31/283 dead transitions. [2023-11-24 21:30:44,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 283 transitions, 3578 flow [2023-11-24 21:30:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:30:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:30:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 521 transitions. [2023-11-24 21:30:44,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7822822822822822 [2023-11-24 21:30:44,160 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 521 transitions. [2023-11-24 21:30:44,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 521 transitions. [2023-11-24 21:30:44,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:44,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 521 transitions. [2023-11-24 21:30:44,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 57.888888888888886) internal successors, (521), 9 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 21:30:44,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 21:30:44,165 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 21:30:44,165 INFO L175 Difference]: Start difference. First operand has 119 places, 193 transitions, 2572 flow. Second operand 9 states and 521 transitions. [2023-11-24 21:30:44,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 283 transitions, 3578 flow [2023-11-24 21:30:44,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 283 transitions, 3457 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:30:44,287 INFO L231 Difference]: Finished difference. Result has 125 places, 182 transitions, 2525 flow [2023-11-24 21:30:44,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2525, PETRI_PLACES=125, PETRI_TRANSITIONS=182} [2023-11-24 21:30:44,288 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 43 predicate places. [2023-11-24 21:30:44,288 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 182 transitions, 2525 flow [2023-11-24 21:30:44,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states 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 21:30:44,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:44,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:44,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 21:30:44,289 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:44,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1909545378, now seen corresponding path program 13 times [2023-11-24 21:30:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:44,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771246212] [2023-11-24 21:30:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:44,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:44,474 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 21:30:44,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771246212] [2023-11-24 21:30:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771246212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:44,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:30:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350989311] [2023-11-24 21:30:44,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:30:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:30:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:30:44,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:44,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 182 transitions, 2525 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:44,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:44,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:44,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:45,982 INFO L124 PetriNetUnfolderBase]: 6066/10704 cut-off events. [2023-11-24 21:30:45,982 INFO L125 PetriNetUnfolderBase]: For 67698/68112 co-relation queries the response was YES. [2023-11-24 21:30:46,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43180 conditions, 10704 events. 6066/10704 cut-off events. For 67698/68112 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 78436 event pairs, 1466 based on Foata normal form. 394/10853 useless extension candidates. Maximal degree in co-relation 43144. Up to 3447 conditions per place. [2023-11-24 21:30:46,083 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 104 selfloop transitions, 132 changer transitions 18/283 dead transitions. [2023-11-24 21:30:46,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 283 transitions, 3579 flow [2023-11-24 21:30:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:30:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:30:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 668 transitions. [2023-11-24 21:30:46,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7522522522522522 [2023-11-24 21:30:46,086 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 668 transitions. [2023-11-24 21:30:46,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 668 transitions. [2023-11-24 21:30:46,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:46,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 668 transitions. [2023-11-24 21:30:46,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 55.666666666666664) internal successors, (668), 12 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 21:30:46,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 21:30:46,092 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 21:30:46,092 INFO L175 Difference]: Start difference. First operand has 125 places, 182 transitions, 2525 flow. Second operand 12 states and 668 transitions. [2023-11-24 21:30:46,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 283 transitions, 3579 flow [2023-11-24 21:30:46,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 283 transitions, 3287 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-24 21:30:46,191 INFO L231 Difference]: Finished difference. Result has 132 places, 185 transitions, 2535 flow [2023-11-24 21:30:46,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2535, PETRI_PLACES=132, PETRI_TRANSITIONS=185} [2023-11-24 21:30:46,192 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 50 predicate places. [2023-11-24 21:30:46,193 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 185 transitions, 2535 flow [2023-11-24 21:30:46,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:46,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:46,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:46,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 21:30:46,194 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:30:46,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 63031562, now seen corresponding path program 14 times [2023-11-24 21:30:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:46,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822199297] [2023-11-24 21:30:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:46,378 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 21:30:46,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:46,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822199297] [2023-11-24 21:30:46,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822199297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:46,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:46,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:30:46,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373598695] [2023-11-24 21:30:46,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:46,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:30:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:46,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:30:46,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:30:46,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2023-11-24 21:30:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 185 transitions, 2535 flow. Second operand has 9 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:46,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:46,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2023-11-24 21:30:46,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand