./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:14:41,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:14:41,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:14:42,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:14:42,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:14:42,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:14:42,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:14:42,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:14:42,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:14:42,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:14:42,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:14:42,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:14:42,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:14:42,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:14:42,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:14:42,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:14:42,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:14:42,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:14:42,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:14:42,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:14:42,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:14:42,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:14:42,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:14:42,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:14:42,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:14:42,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:14:42,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:14:42,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:14:42,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:14:42,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:14:42,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:14:42,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:14:42,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:14:42,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:14:42,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:14:42,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:14:42,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:14:42,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:14:42,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:14:42,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:14:42,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:14:42,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 16:14:42,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:14:42,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:14:42,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:14:42,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:14:42,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:14:42,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:14:42,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:14:42,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:14:42,097 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:14:42,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:14:42,097 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:14:42,097 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:14:42,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:14:42,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:14:42,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:14:42,098 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 16:14:42,098 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 16:14:42,099 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 16:14:42,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:14:42,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:14:42,099 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:14:42,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:14:42,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:14:42,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:14:42,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:14:42,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:14:42,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:14:42,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:14:42,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:14:42,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:14:42,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:14:42,101 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:14:42,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:14:42,102 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:14:42,102 INFO L138 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_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-12-13 16:14:42,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:14:42,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:14:42,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:14:42,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:14:42,286 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:14:42,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 16:14:44,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:14:45,026 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:14:45,027 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 16:14:45,039 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/data/7c5643d64/4a4138ae5fb04053a71532eef97d235c/FLAG4b1bead35 [2022-12-13 16:14:45,053 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/data/7c5643d64/4a4138ae5fb04053a71532eef97d235c [2022-12-13 16:14:45,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:14:45,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:14:45,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:14:45,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:14:45,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:14:45,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64766e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45, skipping insertion in model container [2022-12-13 16:14:45,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:14:45,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:14:45,238 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 16:14:45,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,357 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,358 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:14:45,383 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:14:45,392 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-13 16:14:45,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:14:45,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:14:45,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:14:45,453 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:14:45,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45 WrapperNode [2022-12-13 16:14:45,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:14:45,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:14:45,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:14:45,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:14:45,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,492 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-12-13 16:14:45,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:14:45,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:14:45,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:14:45,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:14:45,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,512 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:14:45,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:14:45,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:14:45,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:14:45,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (1/1) ... [2022-12-13 16:14:45,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:14:45,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:14:45,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:14:45,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:14:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:14:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:14:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:14:45,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:14:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:14:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 16:14:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 16:14:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 16:14:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 16:14:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 16:14:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 16:14:45,571 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 16:14:45,571 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 16:14:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:14:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:14:45,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:14:45,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:14:45,573 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:14:45,681 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:14:45,683 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:14:45,876 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:14:45,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:14:45,883 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 16:14:45,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:14:45 BoogieIcfgContainer [2022-12-13 16:14:45,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:14:45,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:14:45,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:14:45,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:14:45,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:14:45" (1/3) ... [2022-12-13 16:14:45,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641730d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:14:45, skipping insertion in model container [2022-12-13 16:14:45,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:14:45" (2/3) ... [2022-12-13 16:14:45,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641730d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:14:45, skipping insertion in model container [2022-12-13 16:14:45,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:14:45" (3/3) ... [2022-12-13 16:14:45,891 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-13 16:14:45,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:14:45,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 16:14:45,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:14:45,952 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:14:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 118 transitions, 256 flow [2022-12-13 16:14:46,012 INFO L130 PetriNetUnfolder]: 2/114 cut-off events. [2022-12-13 16:14:46,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:14:46,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 2/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-12-13 16:14:46,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 118 transitions, 256 flow [2022-12-13 16:14:46,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 109 transitions, 230 flow [2022-12-13 16:14:46,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:14:46,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 109 transitions, 230 flow [2022-12-13 16:14:46,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 109 transitions, 230 flow [2022-12-13 16:14:46,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 109 transitions, 230 flow [2022-12-13 16:14:46,059 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-12-13 16:14:46,059 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:14:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 16:14:46,062 INFO L119 LiptonReduction]: Number of co-enabled transitions 2382 [2022-12-13 16:14:48,287 INFO L134 LiptonReduction]: Checked pairs total: 4078 [2022-12-13 16:14:48,287 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-12-13 16:14:48,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:14:48,308 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;@b1a74e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:14:48,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 16:14:48,309 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 16:14:48,309 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:14:48,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:48,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 16:14:48,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash 411, now seen corresponding path program 1 times [2022-12-13 16:14:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:48,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435697484] [2022-12-13 16:14:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:48,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435697484] [2022-12-13 16:14:48,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435697484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:48,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:48,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 16:14:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242726650] [2022-12-13 16:14:48,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:48,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:14:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:14:48,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:14:48,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 233 [2022-12-13 16:14:48,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:48,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:48,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 233 [2022-12-13 16:14:48,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:48,612 INFO L130 PetriNetUnfolder]: 1136/1639 cut-off events. [2022-12-13 16:14:48,612 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 16:14:48,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3345 conditions, 1639 events. 1136/1639 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7170 event pairs, 1136 based on Foata normal form. 0/1548 useless extension candidates. Maximal degree in co-relation 3333. Up to 1621 conditions per place. [2022-12-13 16:14:48,622 INFO L137 encePairwiseOnDemand]: 224/233 looper letters, 20 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2022-12-13 16:14:48,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 96 flow [2022-12-13 16:14:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:14:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 16:14:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 251 transitions. [2022-12-13 16:14:48,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5386266094420601 [2022-12-13 16:14:48,632 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 251 transitions. [2022-12-13 16:14:48,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 251 transitions. [2022-12-13 16:14:48,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:48,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 251 transitions. [2022-12-13 16:14:48,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:48,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:48,641 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:48,642 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 2 states and 251 transitions. [2022-12-13 16:14:48,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 96 flow [2022-12-13 16:14:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 16:14:48,646 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 52 flow [2022-12-13 16:14:48,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-12-13 16:14:48,650 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-12-13 16:14:48,650 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 52 flow [2022-12-13 16:14:48,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:48,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:48,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:14:48,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash 386001403, now seen corresponding path program 1 times [2022-12-13 16:14:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:48,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579611994] [2022-12-13 16:14:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:48,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579611994] [2022-12-13 16:14:48,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579611994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:48,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:48,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:14:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108672835] [2022-12-13 16:14:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:14:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:14:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:14:48,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2022-12-13 16:14:48,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:48,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:48,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2022-12-13 16:14:48,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:49,404 INFO L130 PetriNetUnfolder]: 3890/5516 cut-off events. [2022-12-13 16:14:49,404 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:14:49,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11201 conditions, 5516 events. 3890/5516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26833 event pairs, 1302 based on Foata normal form. 0/5309 useless extension candidates. Maximal degree in co-relation 11198. Up to 2885 conditions per place. [2022-12-13 16:14:49,424 INFO L137 encePairwiseOnDemand]: 225/233 looper letters, 50 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2022-12-13 16:14:49,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 262 flow [2022-12-13 16:14:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:14:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:14:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2022-12-13 16:14:49,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4798283261802575 [2022-12-13 16:14:49,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2022-12-13 16:14:49,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2022-12-13 16:14:49,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:49,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2022-12-13 16:14:49,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:49,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:49,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:49,431 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 52 flow. Second operand 5 states and 559 transitions. [2022-12-13 16:14:49,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 262 flow [2022-12-13 16:14:49,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 62 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:14:49,433 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 136 flow [2022-12-13 16:14:49,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2022-12-13 16:14:49,433 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2022-12-13 16:14:49,433 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 136 flow [2022-12-13 16:14:49,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:49,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:49,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:49,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:14:49,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash 386001489, now seen corresponding path program 1 times [2022-12-13 16:14:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:49,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207302570] [2022-12-13 16:14:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:49,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:49,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207302570] [2022-12-13 16:14:49,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207302570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:49,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:49,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:14:49,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879190986] [2022-12-13 16:14:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:49,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:14:49,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:49,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:14:49,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:14:49,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 233 [2022-12-13 16:14:49,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:49,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:49,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 233 [2022-12-13 16:14:49,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:50,310 INFO L130 PetriNetUnfolder]: 2251/3324 cut-off events. [2022-12-13 16:14:50,310 INFO L131 PetriNetUnfolder]: For 1873/1972 co-relation queries the response was YES. [2022-12-13 16:14:50,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9204 conditions, 3324 events. 2251/3324 cut-off events. For 1873/1972 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17151 event pairs, 543 based on Foata normal form. 360/3588 useless extension candidates. Maximal degree in co-relation 9197. Up to 2929 conditions per place. [2022-12-13 16:14:50,329 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 32 selfloop transitions, 4 changer transitions 6/45 dead transitions. [2022-12-13 16:14:50,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 262 flow [2022-12-13 16:14:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:14:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:14:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2022-12-13 16:14:50,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4220314735336195 [2022-12-13 16:14:50,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2022-12-13 16:14:50,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2022-12-13 16:14:50,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:50,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2022-12-13 16:14:50,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,338 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,339 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 136 flow. Second operand 6 states and 590 transitions. [2022-12-13 16:14:50,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 262 flow [2022-12-13 16:14:50,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:14:50,349 INFO L231 Difference]: Finished difference. Result has 43 places, 25 transitions, 106 flow [2022-12-13 16:14:50,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=25} [2022-12-13 16:14:50,350 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2022-12-13 16:14:50,351 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 25 transitions, 106 flow [2022-12-13 16:14:50,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:50,351 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:50,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:14:50,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:50,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1601554596, now seen corresponding path program 1 times [2022-12-13 16:14:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:50,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940489029] [2022-12-13 16:14:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:50,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:50,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940489029] [2022-12-13 16:14:50,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940489029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:50,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:50,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:14:50,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946043517] [2022-12-13 16:14:50,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:50,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:14:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:50,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:14:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:14:50,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2022-12-13 16:14:50,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 25 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:50,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2022-12-13 16:14:50,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:50,816 INFO L130 PetriNetUnfolder]: 2447/3560 cut-off events. [2022-12-13 16:14:50,816 INFO L131 PetriNetUnfolder]: For 2050/2050 co-relation queries the response was YES. [2022-12-13 16:14:50,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9936 conditions, 3560 events. 2447/3560 cut-off events. For 2050/2050 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16779 event pairs, 321 based on Foata normal form. 180/3740 useless extension candidates. Maximal degree in co-relation 9928. Up to 1795 conditions per place. [2022-12-13 16:14:50,835 INFO L137 encePairwiseOnDemand]: 225/233 looper letters, 39 selfloop transitions, 7 changer transitions 26/72 dead transitions. [2022-12-13 16:14:50,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 416 flow [2022-12-13 16:14:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:14:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:14:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 765 transitions. [2022-12-13 16:14:50,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46903740036787245 [2022-12-13 16:14:50,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 765 transitions. [2022-12-13 16:14:50,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 765 transitions. [2022-12-13 16:14:50,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:50,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 765 transitions. [2022-12-13 16:14:50,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,843 INFO L175 Difference]: Start difference. First operand has 43 places, 25 transitions, 106 flow. Second operand 7 states and 765 transitions. [2022-12-13 16:14:50,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 416 flow [2022-12-13 16:14:50,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 391 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-13 16:14:50,852 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 136 flow [2022-12-13 16:14:50,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2022-12-13 16:14:50,853 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2022-12-13 16:14:50,853 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 136 flow [2022-12-13 16:14:50,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:50,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:50,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:14:50,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -918926855, now seen corresponding path program 1 times [2022-12-13 16:14:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124043961] [2022-12-13 16:14:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:50,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124043961] [2022-12-13 16:14:50,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124043961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:50,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:50,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:14:50,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116519410] [2022-12-13 16:14:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:50,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:14:50,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:14:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:14:50,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 233 [2022-12-13 16:14:50,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:50,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:50,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 233 [2022-12-13 16:14:50,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:51,302 INFO L130 PetriNetUnfolder]: 2177/3321 cut-off events. [2022-12-13 16:14:51,302 INFO L131 PetriNetUnfolder]: For 4471/4656 co-relation queries the response was YES. [2022-12-13 16:14:51,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9893 conditions, 3321 events. 2177/3321 cut-off events. For 4471/4656 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 18231 event pairs, 559 based on Foata normal form. 207/3437 useless extension candidates. Maximal degree in co-relation 9882. Up to 1255 conditions per place. [2022-12-13 16:14:51,316 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 39 selfloop transitions, 4 changer transitions 26/72 dead transitions. [2022-12-13 16:14:51,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 476 flow [2022-12-13 16:14:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:14:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:14:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2022-12-13 16:14:51,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48569384835479257 [2022-12-13 16:14:51,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2022-12-13 16:14:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2022-12-13 16:14:51,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:51,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2022-12-13 16:14:51,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,329 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 136 flow. Second operand 6 states and 679 transitions. [2022-12-13 16:14:51,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 476 flow [2022-12-13 16:14:51,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 72 transitions, 448 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 16:14:51,343 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 141 flow [2022-12-13 16:14:51,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2022-12-13 16:14:51,344 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2022-12-13 16:14:51,344 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 141 flow [2022-12-13 16:14:51,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:51,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:51,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:14:51,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1578536136, now seen corresponding path program 1 times [2022-12-13 16:14:51,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:51,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769510037] [2022-12-13 16:14:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:51,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:51,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:51,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769510037] [2022-12-13 16:14:51,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769510037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:51,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:51,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:14:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473047097] [2022-12-13 16:14:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:51,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:14:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:14:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:14:51,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2022-12-13 16:14:51,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:51,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2022-12-13 16:14:51,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:51,728 INFO L130 PetriNetUnfolder]: 1439/2168 cut-off events. [2022-12-13 16:14:51,728 INFO L131 PetriNetUnfolder]: For 2732/2732 co-relation queries the response was YES. [2022-12-13 16:14:51,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 2168 events. 1439/2168 cut-off events. For 2732/2732 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9760 event pairs, 366 based on Foata normal form. 116/2284 useless extension candidates. Maximal degree in co-relation 6756. Up to 1198 conditions per place. [2022-12-13 16:14:51,743 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 43 selfloop transitions, 7 changer transitions 22/72 dead transitions. [2022-12-13 16:14:51,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 463 flow [2022-12-13 16:14:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:14:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:14:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 761 transitions. [2022-12-13 16:14:51,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46658491722869405 [2022-12-13 16:14:51,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 761 transitions. [2022-12-13 16:14:51,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 761 transitions. [2022-12-13 16:14:51,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:51,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 761 transitions. [2022-12-13 16:14:51,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,755 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,755 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 141 flow. Second operand 7 states and 761 transitions. [2022-12-13 16:14:51,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 463 flow [2022-12-13 16:14:51,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 428 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-13 16:14:51,763 INFO L231 Difference]: Finished difference. Result has 51 places, 29 transitions, 175 flow [2022-12-13 16:14:51,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=175, PETRI_PLACES=51, PETRI_TRANSITIONS=29} [2022-12-13 16:14:51,764 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2022-12-13 16:14:51,764 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 29 transitions, 175 flow [2022-12-13 16:14:51,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:51,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:51,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:14:51,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1896011071, now seen corresponding path program 1 times [2022-12-13 16:14:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503248398] [2022-12-13 16:14:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:51,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503248398] [2022-12-13 16:14:51,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503248398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:51,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:51,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:14:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960632368] [2022-12-13 16:14:51,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:51,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:14:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:51,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:14:51,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:14:51,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2022-12-13 16:14:51,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 29 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:51,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:51,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2022-12-13 16:14:51,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:52,175 INFO L130 PetriNetUnfolder]: 1672/2523 cut-off events. [2022-12-13 16:14:52,175 INFO L131 PetriNetUnfolder]: For 4491/4491 co-relation queries the response was YES. [2022-12-13 16:14:52,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 2523 events. 1672/2523 cut-off events. For 4491/4491 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11422 event pairs, 377 based on Foata normal form. 86/2609 useless extension candidates. Maximal degree in co-relation 8085. Up to 888 conditions per place. [2022-12-13 16:14:52,181 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 40 selfloop transitions, 8 changer transitions 28/76 dead transitions. [2022-12-13 16:14:52,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 565 flow [2022-12-13 16:14:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:14:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:14:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 760 transitions. [2022-12-13 16:14:52,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46597179644389947 [2022-12-13 16:14:52,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 760 transitions. [2022-12-13 16:14:52,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 760 transitions. [2022-12-13 16:14:52,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:52,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 760 transitions. [2022-12-13 16:14:52,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,189 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,189 INFO L175 Difference]: Start difference. First operand has 51 places, 29 transitions, 175 flow. Second operand 7 states and 760 transitions. [2022-12-13 16:14:52,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 565 flow [2022-12-13 16:14:52,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 548 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 16:14:52,201 INFO L231 Difference]: Finished difference. Result has 56 places, 29 transitions, 201 flow [2022-12-13 16:14:52,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2022-12-13 16:14:52,202 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2022-12-13 16:14:52,202 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 29 transitions, 201 flow [2022-12-13 16:14:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:52,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:52,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:14:52,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 671234030, now seen corresponding path program 1 times [2022-12-13 16:14:52,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471305810] [2022-12-13 16:14:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:52,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471305810] [2022-12-13 16:14:52,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471305810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:52,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:52,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:14:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656694043] [2022-12-13 16:14:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:14:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:14:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:14:52,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2022-12-13 16:14:52,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:52,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2022-12-13 16:14:52,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:52,495 INFO L130 PetriNetUnfolder]: 1050/1611 cut-off events. [2022-12-13 16:14:52,495 INFO L131 PetriNetUnfolder]: For 3212/3212 co-relation queries the response was YES. [2022-12-13 16:14:52,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5373 conditions, 1611 events. 1050/1611 cut-off events. For 3212/3212 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7083 event pairs, 172 based on Foata normal form. 60/1671 useless extension candidates. Maximal degree in co-relation 5356. Up to 736 conditions per place. [2022-12-13 16:14:52,501 INFO L137 encePairwiseOnDemand]: 227/233 looper letters, 35 selfloop transitions, 7 changer transitions 13/55 dead transitions. [2022-12-13 16:14:52,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 406 flow [2022-12-13 16:14:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:14:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:14:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 647 transitions. [2022-12-13 16:14:52,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46280400572246067 [2022-12-13 16:14:52,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 647 transitions. [2022-12-13 16:14:52,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 647 transitions. [2022-12-13 16:14:52,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:52,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 647 transitions. [2022-12-13 16:14:52,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,509 INFO L175 Difference]: Start difference. First operand has 56 places, 29 transitions, 201 flow. Second operand 6 states and 647 transitions. [2022-12-13 16:14:52,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 406 flow [2022-12-13 16:14:52,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 353 flow, removed 15 selfloop flow, removed 10 redundant places. [2022-12-13 16:14:52,516 INFO L231 Difference]: Finished difference. Result has 52 places, 28 transitions, 171 flow [2022-12-13 16:14:52,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=28} [2022-12-13 16:14:52,516 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2022-12-13 16:14:52,516 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 28 transitions, 171 flow [2022-12-13 16:14:52,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:52,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:52,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:14:52,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1341613859, now seen corresponding path program 1 times [2022-12-13 16:14:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:52,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313516661] [2022-12-13 16:14:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:52,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:52,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313516661] [2022-12-13 16:14:52,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313516661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:52,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:52,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:14:52,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569338478] [2022-12-13 16:14:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:52,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:14:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:14:52,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:14:52,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2022-12-13 16:14:52,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 28 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:52,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2022-12-13 16:14:52,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:52,747 INFO L130 PetriNetUnfolder]: 697/1152 cut-off events. [2022-12-13 16:14:52,747 INFO L131 PetriNetUnfolder]: For 2548/2591 co-relation queries the response was YES. [2022-12-13 16:14:52,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 1152 events. 697/1152 cut-off events. For 2548/2591 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5799 event pairs, 272 based on Foata normal form. 54/1147 useless extension candidates. Maximal degree in co-relation 3492. Up to 792 conditions per place. [2022-12-13 16:14:52,750 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 36 selfloop transitions, 5 changer transitions 27/72 dead transitions. [2022-12-13 16:14:52,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 559 flow [2022-12-13 16:14:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:14:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:14:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 575 transitions. [2022-12-13 16:14:52,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49356223175965663 [2022-12-13 16:14:52,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 575 transitions. [2022-12-13 16:14:52,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 575 transitions. [2022-12-13 16:14:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:52,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 575 transitions. [2022-12-13 16:14:52,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,754 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,754 INFO L175 Difference]: Start difference. First operand has 52 places, 28 transitions, 171 flow. Second operand 5 states and 575 transitions. [2022-12-13 16:14:52,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 559 flow [2022-12-13 16:14:52,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 497 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 16:14:52,757 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 190 flow [2022-12-13 16:14:52,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2022-12-13 16:14:52,758 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2022-12-13 16:14:52,758 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 190 flow [2022-12-13 16:14:52,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:52,758 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:52,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:14:52,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:52,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1726948218, now seen corresponding path program 1 times [2022-12-13 16:14:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:52,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328785274] [2022-12-13 16:14:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:52,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:52,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:52,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328785274] [2022-12-13 16:14:52,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328785274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:52,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:52,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:14:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126682928] [2022-12-13 16:14:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:52,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:14:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:14:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:14:52,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2022-12-13 16:14:52,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:52,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2022-12-13 16:14:52,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:52,977 INFO L130 PetriNetUnfolder]: 467/821 cut-off events. [2022-12-13 16:14:52,977 INFO L131 PetriNetUnfolder]: For 2261/2450 co-relation queries the response was YES. [2022-12-13 16:14:52,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 821 events. 467/821 cut-off events. For 2261/2450 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4035 event pairs, 78 based on Foata normal form. 59/852 useless extension candidates. Maximal degree in co-relation 3374. Up to 544 conditions per place. [2022-12-13 16:14:52,980 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 56 selfloop transitions, 13 changer transitions 8/81 dead transitions. [2022-12-13 16:14:52,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 636 flow [2022-12-13 16:14:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:14:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:14:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 690 transitions. [2022-12-13 16:14:52,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49356223175965663 [2022-12-13 16:14:52,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 690 transitions. [2022-12-13 16:14:52,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 690 transitions. [2022-12-13 16:14:52,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:52,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 690 transitions. [2022-12-13 16:14:52,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,984 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,984 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 190 flow. Second operand 6 states and 690 transitions. [2022-12-13 16:14:52,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 636 flow [2022-12-13 16:14:52,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 619 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 16:14:52,987 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 287 flow [2022-12-13 16:14:52,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2022-12-13 16:14:52,987 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-12-13 16:14:52,988 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 287 flow [2022-12-13 16:14:52,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:52,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:52,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:52,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:14:52,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1996488004, now seen corresponding path program 1 times [2022-12-13 16:14:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:52,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543198672] [2022-12-13 16:14:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:53,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:53,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543198672] [2022-12-13 16:14:53,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543198672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:53,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:53,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:14:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922326194] [2022-12-13 16:14:53,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:53,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:14:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:14:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:14:53,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2022-12-13 16:14:53,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:53,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2022-12-13 16:14:53,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:53,219 INFO L130 PetriNetUnfolder]: 390/721 cut-off events. [2022-12-13 16:14:53,219 INFO L131 PetriNetUnfolder]: For 2565/3050 co-relation queries the response was YES. [2022-12-13 16:14:53,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 721 events. 390/721 cut-off events. For 2565/3050 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3658 event pairs, 21 based on Foata normal form. 95/793 useless extension candidates. Maximal degree in co-relation 3759. Up to 486 conditions per place. [2022-12-13 16:14:53,223 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 59 selfloop transitions, 21 changer transitions 13/97 dead transitions. [2022-12-13 16:14:53,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 866 flow [2022-12-13 16:14:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:14:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:14:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 916 transitions. [2022-12-13 16:14:53,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49141630901287553 [2022-12-13 16:14:53,226 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 916 transitions. [2022-12-13 16:14:53,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 916 transitions. [2022-12-13 16:14:53,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:53,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 916 transitions. [2022-12-13 16:14:53,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.5) internal successors, (916), 8 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,231 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,231 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 287 flow. Second operand 8 states and 916 transitions. [2022-12-13 16:14:53,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 866 flow [2022-12-13 16:14:53,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 826 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-12-13 16:14:53,240 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 400 flow [2022-12-13 16:14:53,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=400, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2022-12-13 16:14:53,240 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2022-12-13 16:14:53,240 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 400 flow [2022-12-13 16:14:53,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:53,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:53,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:14:53,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash -962832311, now seen corresponding path program 1 times [2022-12-13 16:14:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:53,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586353007] [2022-12-13 16:14:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:53,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:53,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586353007] [2022-12-13 16:14:53,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586353007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:53,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:53,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:14:53,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116961667] [2022-12-13 16:14:53,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:14:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:14:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:14:53,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2022-12-13 16:14:53,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:53,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2022-12-13 16:14:53,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:53,555 INFO L130 PetriNetUnfolder]: 552/1024 cut-off events. [2022-12-13 16:14:53,555 INFO L131 PetriNetUnfolder]: For 5048/5048 co-relation queries the response was YES. [2022-12-13 16:14:53,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5603 conditions, 1024 events. 552/1024 cut-off events. For 5048/5048 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5337 event pairs, 79 based on Foata normal form. 6/1030 useless extension candidates. Maximal degree in co-relation 5585. Up to 496 conditions per place. [2022-12-13 16:14:53,560 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 43 selfloop transitions, 6 changer transitions 83/132 dead transitions. [2022-12-13 16:14:53,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 132 transitions, 1466 flow [2022-12-13 16:14:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:14:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:14:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 753 transitions. [2022-12-13 16:14:53,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4616799509503372 [2022-12-13 16:14:53,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 753 transitions. [2022-12-13 16:14:53,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 753 transitions. [2022-12-13 16:14:53,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:53,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 753 transitions. [2022-12-13 16:14:53,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,567 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 400 flow. Second operand 7 states and 753 transitions. [2022-12-13 16:14:53,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 132 transitions, 1466 flow [2022-12-13 16:14:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 132 transitions, 1137 flow, removed 130 selfloop flow, removed 4 redundant places. [2022-12-13 16:14:53,594 INFO L231 Difference]: Finished difference. Result has 67 places, 37 transitions, 254 flow [2022-12-13 16:14:53,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=254, PETRI_PLACES=67, PETRI_TRANSITIONS=37} [2022-12-13 16:14:53,595 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2022-12-13 16:14:53,595 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 37 transitions, 254 flow [2022-12-13 16:14:53,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:53,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:53,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:14:53,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash 552878895, now seen corresponding path program 2 times [2022-12-13 16:14:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:53,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686518803] [2022-12-13 16:14:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:53,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:53,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686518803] [2022-12-13 16:14:53,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686518803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:53,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:53,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:14:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075598970] [2022-12-13 16:14:53,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:53,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:14:53,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:14:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:14:53,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 233 [2022-12-13 16:14:53,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 37 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:53,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 233 [2022-12-13 16:14:53,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:53,810 INFO L130 PetriNetUnfolder]: 127/253 cut-off events. [2022-12-13 16:14:53,810 INFO L131 PetriNetUnfolder]: For 860/951 co-relation queries the response was YES. [2022-12-13 16:14:53,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 253 events. 127/253 cut-off events. For 860/951 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 956 event pairs, 8 based on Foata normal form. 38/281 useless extension candidates. Maximal degree in co-relation 1113. Up to 88 conditions per place. [2022-12-13 16:14:53,811 INFO L137 encePairwiseOnDemand]: 226/233 looper letters, 26 selfloop transitions, 17 changer transitions 18/63 dead transitions. [2022-12-13 16:14:53,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 552 flow [2022-12-13 16:14:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:14:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:14:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 896 transitions. [2022-12-13 16:14:53,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48068669527896996 [2022-12-13 16:14:53,813 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 896 transitions. [2022-12-13 16:14:53,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 896 transitions. [2022-12-13 16:14:53,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:53,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 896 transitions. [2022-12-13 16:14:53,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,819 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 233.0) internal successors, (2097), 9 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,819 INFO L175 Difference]: Start difference. First operand has 67 places, 37 transitions, 254 flow. Second operand 8 states and 896 transitions. [2022-12-13 16:14:53,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 552 flow [2022-12-13 16:14:53,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 488 flow, removed 17 selfloop flow, removed 10 redundant places. [2022-12-13 16:14:53,822 INFO L231 Difference]: Finished difference. Result has 60 places, 33 transitions, 234 flow [2022-12-13 16:14:53,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=33} [2022-12-13 16:14:53,823 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2022-12-13 16:14:53,823 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 33 transitions, 234 flow [2022-12-13 16:14:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:14:53,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:14:53,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-12-13 16:14:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1211942639, now seen corresponding path program 1 times [2022-12-13 16:14:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672812256] [2022-12-13 16:14:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:14:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672812256] [2022-12-13 16:14:53,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672812256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:53,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:53,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:14:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279184056] [2022-12-13 16:14:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:14:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:14:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:14:53,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 233 [2022-12-13 16:14:53,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 33 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:53,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:14:53,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 233 [2022-12-13 16:14:53,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:14:53,995 INFO L130 PetriNetUnfolder]: 73/143 cut-off events. [2022-12-13 16:14:53,995 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2022-12-13 16:14:53,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 143 events. 73/143 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 338 event pairs, 10 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 653. Up to 85 conditions per place. [2022-12-13 16:14:53,996 INFO L137 encePairwiseOnDemand]: 225/233 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2022-12-13 16:14:53,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 418 flow [2022-12-13 16:14:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:14:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:14:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2022-12-13 16:14:53,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43776824034334766 [2022-12-13 16:14:53,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 612 transitions. [2022-12-13 16:14:53,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 612 transitions. [2022-12-13 16:14:53,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:14:53,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 612 transitions. [2022-12-13 16:14:53,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:54,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:54,001 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:54,001 INFO L175 Difference]: Start difference. First operand has 60 places, 33 transitions, 234 flow. Second operand 6 states and 612 transitions. [2022-12-13 16:14:54,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 418 flow [2022-12-13 16:14:54,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 317 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-12-13 16:14:54,002 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2022-12-13 16:14:54,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2022-12-13 16:14:54,003 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2022-12-13 16:14:54,003 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2022-12-13 16:14:54,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:54,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-12-13 16:14:54,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-12-13 16:14:54,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2022-12-13 16:14:54,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2022-12-13 16:14:54,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2022-12-13 16:14:54,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2022-12-13 16:14:54,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2022-12-13 16:14:54,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2022-12-13 16:14:54,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:14:54,008 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:54,011 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:14:54,011 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:14:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:14:54 BasicIcfg [2022-12-13 16:14:54,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:14:54,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:14:54,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:14:54,015 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:14:54,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:14:45" (3/4) ... [2022-12-13 16:14:54,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:14:54,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 16:14:54,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 16:14:54,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 16:14:54,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-12-13 16:14:54,026 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-13 16:14:54,026 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:14:54,027 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 16:14:54,027 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:14:54,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:14:54,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:14:54,052 INFO L158 Benchmark]: Toolchain (without parser) took 8995.37ms. Allocated memory was 136.3MB in the beginning and 341.8MB in the end (delta: 205.5MB). Free memory was 104.1MB in the beginning and 63.5MB in the end (delta: 40.6MB). Peak memory consumption was 248.4MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,052 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:14:54,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.35ms. Allocated memory is still 136.3MB. Free memory was 104.1MB in the beginning and 80.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.66ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,053 INFO L158 Benchmark]: Boogie Preprocessor took 22.90ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,053 INFO L158 Benchmark]: RCFGBuilder took 368.31ms. Allocated memory is still 136.3MB. Free memory was 76.5MB in the beginning and 103.3MB in the end (delta: -26.8MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,054 INFO L158 Benchmark]: TraceAbstraction took 8127.95ms. Allocated memory was 136.3MB in the beginning and 341.8MB in the end (delta: 205.5MB). Free memory was 102.5MB in the beginning and 66.6MB in the end (delta: 35.8MB). Peak memory consumption was 243.0MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,054 INFO L158 Benchmark]: Witness Printer took 36.68ms. Allocated memory is still 341.8MB. Free memory was 66.6MB in the beginning and 63.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 16:14:54,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.35ms. Allocated memory is still 136.3MB. Free memory was 104.1MB in the beginning and 80.2MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.66ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.90ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.31ms. Allocated memory is still 136.3MB. Free memory was 76.5MB in the beginning and 103.3MB in the end (delta: -26.8MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8127.95ms. Allocated memory was 136.3MB in the beginning and 341.8MB in the end (delta: 205.5MB). Free memory was 102.5MB in the beginning and 66.6MB in the end (delta: 35.8MB). Peak memory consumption was 243.0MB. Max. memory is 16.1GB. * Witness Printer took 36.68ms. Allocated memory is still 341.8MB. Free memory was 66.6MB in the beginning and 63.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 120 PlacesBefore, 43 PlacesAfterwards, 109 TransitionsBefore, 31 TransitionsAfterwards, 2382 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 115 TotalNumberOfCompositions, 4078 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2210, independent: 2131, independent conditional: 0, independent unconditional: 2131, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1293, independent: 1265, independent conditional: 0, independent unconditional: 1265, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2210, independent: 866, independent conditional: 0, independent unconditional: 866, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 1293, unknown conditional: 0, unknown unconditional: 1293] , Statistics on independence cache: Total cache size (in pairs): 93, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 786]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 147 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.0s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 914 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 722 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 224 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1833 IncrementalHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 76 mSDtfsCounter, 1833 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=11, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 1270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:14:54,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab64fb-2ea6-421c-9c02-83bbc5e9aa75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE