./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.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_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/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_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/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_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- 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 18:06:28,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:06:28,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:06:28,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:06:28,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:06:28,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:06:28,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:06:28,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:06:28,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:06:28,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:06:28,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:06:28,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:06:28,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:06:28,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:06:28,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:06:28,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:06:28,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:06:28,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:06:28,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:06:28,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:06:28,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:06:28,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:06:28,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:06:28,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:06:28,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:06:28,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:06:28,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:06:28,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:06:28,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:06:28,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:06:28,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:06:28,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:06:28,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:06:28,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:06:28,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:06:28,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:06:28,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:06:28,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:06:28,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:06:28,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:06:28,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:06:28,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:06:28,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:06:28,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:06:28,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:06:28,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:06:28,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:06:28,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:06:28,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:06:28,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:06:28,114 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:06:28,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:06:28,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:06:28,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:06:28,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:06:28,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:06:28,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:06:28,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:06:28,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:06:28,116 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:06:28,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:06:28,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:06:28,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:06:28,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:06:28,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:06:28,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:06:28,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:06:28,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:06:28,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:06:28,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:06:28,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:06:28,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:06:28,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:06:28,118 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:06:28,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:06:28,119 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:06:28,119 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_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2022-12-13 18:06:28,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:06:28,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:06:28,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:06:28,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:06:28,324 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:06:28,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2022-12-13 18:06:31,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:06:31,229 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:06:31,229 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2022-12-13 18:06:31,239 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/data/21605e23c/a4449af60ffb45f2a5811acb77fd236f/FLAG98a4544b3 [2022-12-13 18:06:31,250 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/data/21605e23c/a4449af60ffb45f2a5811acb77fd236f [2022-12-13 18:06:31,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:06:31,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:06:31,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:06:31,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:06:31,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:06:31,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50449f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31, skipping insertion in model container [2022-12-13 18:06:31,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:06:31,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:06:31,428 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_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2022-12-13 18:06:31,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:06:31,533 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:06:31,542 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_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2022-12-13 18:06:31,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:06:31,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:06:31,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:06:31,587 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:06:31,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31 WrapperNode [2022-12-13 18:06:31,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:06:31,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:06:31,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:06:31,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:06:31,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,617 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-13 18:06:31,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:06:31,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:06:31,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:06:31,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:06:31,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:06:31,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:06:31,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:06:31,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:06:31,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (1/1) ... [2022-12-13 18:06:31,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:06:31,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:06:31,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:06:31,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 18:06:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 18:06:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 18:06:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 18:06:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 18:06:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:06:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:06:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:06:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:06:31,688 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 18:06:31,788 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:06:31,789 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:06:31,935 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:06:31,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:06:31,941 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:06:31,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:31 BoogieIcfgContainer [2022-12-13 18:06:31,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:06:31,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:06:31,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:06:31,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:06:31,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:06:31" (1/3) ... [2022-12-13 18:06:31,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de9526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:06:31, skipping insertion in model container [2022-12-13 18:06:31,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:06:31" (2/3) ... [2022-12-13 18:06:31,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53de9526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:06:31, skipping insertion in model container [2022-12-13 18:06:31,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:31" (3/3) ... [2022-12-13 18:06:31,949 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2022-12-13 18:06:31,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:06:31,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 18:06:31,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:06:32,017 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:06:32,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 102 transitions, 219 flow [2022-12-13 18:06:32,095 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-12-13 18:06:32,095 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:06:32,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-12-13 18:06:32,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 102 transitions, 219 flow [2022-12-13 18:06:32,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 94 transitions, 197 flow [2022-12-13 18:06:32,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:06:32,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 94 transitions, 197 flow [2022-12-13 18:06:32,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 94 transitions, 197 flow [2022-12-13 18:06:32,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 197 flow [2022-12-13 18:06:32,136 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-12-13 18:06:32,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:06:32,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-13 18:06:32,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2022-12-13 18:06:33,956 INFO L134 LiptonReduction]: Checked pairs total: 3128 [2022-12-13 18:06:33,956 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-12-13 18:06:33,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:06:33,972 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;@3a9ce996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:06:33,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 18:06:33,973 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:06:33,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:06:33,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:33,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:06:33,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:33,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash 355, now seen corresponding path program 1 times [2022-12-13 18:06:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:33,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684118039] [2022-12-13 18:06:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:34,068 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 18:06:34,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:34,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684118039] [2022-12-13 18:06:34,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684118039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:34,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:34,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:06:34,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055285466] [2022-12-13 18:06:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:34,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:06:34,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:06:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:06:34,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-12-13 18:06:34,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:34,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:34,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-12-13 18:06:34,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:34,176 INFO L130 PetriNetUnfolder]: 272/445 cut-off events. [2022-12-13 18:06:34,177 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:06:34,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 445 events. 272/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1890 event pairs, 272 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 897. Up to 433 conditions per place. [2022-12-13 18:06:34,184 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-12-13 18:06:34,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2022-12-13 18:06:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:06:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:06:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2022-12-13 18:06:34,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2022-12-13 18:06:34,198 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 215 transitions. [2022-12-13 18:06:34,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 215 transitions. [2022-12-13 18:06:34,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:34,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 215 transitions. [2022-12-13 18:06:34,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 18:06:34,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 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 18:06:34,212 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 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 18:06:34,214 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 215 transitions. [2022-12-13 18:06:34,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2022-12-13 18:06:34,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:06:34,219 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2022-12-13 18:06:34,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2022-12-13 18:06:34,225 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2022-12-13 18:06:34,225 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2022-12-13 18:06:34,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:34,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:34,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:34,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:06:34,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:34,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 61620973, now seen corresponding path program 1 times [2022-12-13 18:06:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:34,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52563820] [2022-12-13 18:06:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:34,514 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 18:06:34,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:34,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52563820] [2022-12-13 18:06:34,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52563820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:34,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:34,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:06:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608693157] [2022-12-13 18:06:34,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:34,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:06:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:06:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:06:34,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-12-13 18:06:34,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 18:06:34,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:34,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-12-13 18:06:34,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:34,636 INFO L130 PetriNetUnfolder]: 411/661 cut-off events. [2022-12-13 18:06:34,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:06:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 661 events. 411/661 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2891 event pairs, 121 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 1327. Up to 385 conditions per place. [2022-12-13 18:06:34,640 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 35 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2022-12-13 18:06:34,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 182 flow [2022-12-13 18:06:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:06:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:06:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 489 transitions. [2022-12-13 18:06:34,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5015384615384615 [2022-12-13 18:06:34,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 489 transitions. [2022-12-13 18:06:34,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 489 transitions. [2022-12-13 18:06:34,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:34,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 489 transitions. [2022-12-13 18:06:34,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:34,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:34,646 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:34,646 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 489 transitions. [2022-12-13 18:06:34,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 182 flow [2022-12-13 18:06:34,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:06:34,647 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 100 flow [2022-12-13 18:06:34,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2022-12-13 18:06:34,648 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 18:06:34,648 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 100 flow [2022-12-13 18:06:34,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 18:06:34,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:34,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:34,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:06:34,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1910250520, now seen corresponding path program 1 times [2022-12-13 18:06:34,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:34,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078235256] [2022-12-13 18:06:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:34,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:34,862 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 18:06:34,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:34,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078235256] [2022-12-13 18:06:34,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078235256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:34,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:34,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113127217] [2022-12-13 18:06:34,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:34,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:06:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:06:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:06:34,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 195 [2022-12-13 18:06:34,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 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 18:06:34,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:34,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 195 [2022-12-13 18:06:34,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:35,033 INFO L130 PetriNetUnfolder]: 276/476 cut-off events. [2022-12-13 18:06:35,033 INFO L131 PetriNetUnfolder]: For 286/295 co-relation queries the response was YES. [2022-12-13 18:06:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 476 events. 276/476 cut-off events. For 286/295 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2163 event pairs, 75 based on Foata normal form. 51/515 useless extension candidates. Maximal degree in co-relation 1214. Up to 412 conditions per place. [2022-12-13 18:06:35,037 INFO L137 encePairwiseOnDemand]: 191/195 looper letters, 19 selfloop transitions, 3 changer transitions 3/29 dead transitions. [2022-12-13 18:06:35,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 158 flow [2022-12-13 18:06:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:06:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:06:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 427 transitions. [2022-12-13 18:06:35,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4379487179487179 [2022-12-13 18:06:35,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 427 transitions. [2022-12-13 18:06:35,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 427 transitions. [2022-12-13 18:06:35,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:35,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 427 transitions. [2022-12-13 18:06:35,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 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 18:06:35,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,045 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 100 flow. Second operand 5 states and 427 transitions. [2022-12-13 18:06:35,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 158 flow [2022-12-13 18:06:35,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:06:35,048 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 72 flow [2022-12-13 18:06:35,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2022-12-13 18:06:35,048 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2022-12-13 18:06:35,049 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 72 flow [2022-12-13 18:06:35,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 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 18:06:35,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:35,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:35,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:06:35,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1578525099, now seen corresponding path program 1 times [2022-12-13 18:06:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059627945] [2022-12-13 18:06:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:35,146 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 18:06:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:35,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059627945] [2022-12-13 18:06:35,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059627945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:35,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:35,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625150656] [2022-12-13 18:06:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:06:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:06:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:06:35,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 195 [2022-12-13 18:06:35,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 18:06:35,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:35,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 195 [2022-12-13 18:06:35,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:35,237 INFO L130 PetriNetUnfolder]: 208/372 cut-off events. [2022-12-13 18:06:35,237 INFO L131 PetriNetUnfolder]: For 170/174 co-relation queries the response was YES. [2022-12-13 18:06:35,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 372 events. 208/372 cut-off events. For 170/174 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1499 event pairs, 52 based on Foata normal form. 36/401 useless extension candidates. Maximal degree in co-relation 924. Up to 237 conditions per place. [2022-12-13 18:06:35,240 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 23 selfloop transitions, 4 changer transitions 15/46 dead transitions. [2022-12-13 18:06:35,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 234 flow [2022-12-13 18:06:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:06:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:06:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2022-12-13 18:06:35,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2022-12-13 18:06:35,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 480 transitions. [2022-12-13 18:06:35,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 480 transitions. [2022-12-13 18:06:35,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:35,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 480 transitions. [2022-12-13 18:06:35,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,246 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 72 flow. Second operand 5 states and 480 transitions. [2022-12-13 18:06:35,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 234 flow [2022-12-13 18:06:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 224 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 18:06:35,248 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 101 flow [2022-12-13 18:06:35,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2022-12-13 18:06:35,249 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-13 18:06:35,249 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 101 flow [2022-12-13 18:06:35,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 18:06:35,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:35,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:35,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:06:35,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash 528679648, now seen corresponding path program 1 times [2022-12-13 18:06:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932069165] [2022-12-13 18:06:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:35,339 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 18:06:35,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:35,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932069165] [2022-12-13 18:06:35,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932069165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:35,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:35,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:06:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611838719] [2022-12-13 18:06:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:35,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:06:35,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:06:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:06:35,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 195 [2022-12-13 18:06:35,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 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 18:06:35,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:35,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 195 [2022-12-13 18:06:35,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:35,424 INFO L130 PetriNetUnfolder]: 108/215 cut-off events. [2022-12-13 18:06:35,424 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-12-13 18:06:35,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 215 events. 108/215 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 726 event pairs, 20 based on Foata normal form. 20/231 useless extension candidates. Maximal degree in co-relation 709. Up to 94 conditions per place. [2022-12-13 18:06:35,426 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 28 selfloop transitions, 7 changer transitions 14/53 dead transitions. [2022-12-13 18:06:35,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 325 flow [2022-12-13 18:06:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:06:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:06:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2022-12-13 18:06:35,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2022-12-13 18:06:35,427 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2022-12-13 18:06:35,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2022-12-13 18:06:35,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:35,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2022-12-13 18:06:35,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 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 18:06:35,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 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 18:06:35,430 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 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 18:06:35,430 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 101 flow. Second operand 6 states and 576 transitions. [2022-12-13 18:06:35,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 325 flow [2022-12-13 18:06:35,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 319 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 18:06:35,432 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 151 flow [2022-12-13 18:06:35,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2022-12-13 18:06:35,432 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2022-12-13 18:06:35,432 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 151 flow [2022-12-13 18:06:35,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 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 18:06:35,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:35,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:35,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:06:35,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2023301074, now seen corresponding path program 1 times [2022-12-13 18:06:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912707246] [2022-12-13 18:06:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:35,510 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 18:06:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912707246] [2022-12-13 18:06:35,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912707246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:35,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:35,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:06:35,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910169329] [2022-12-13 18:06:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:06:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:06:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:06:35,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 195 [2022-12-13 18:06:35,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 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 18:06:35,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:35,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 195 [2022-12-13 18:06:35,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:35,621 INFO L130 PetriNetUnfolder]: 140/300 cut-off events. [2022-12-13 18:06:35,621 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2022-12-13 18:06:35,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 300 events. 140/300 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1272 event pairs, 24 based on Foata normal form. 6/304 useless extension candidates. Maximal degree in co-relation 1107. Up to 138 conditions per place. [2022-12-13 18:06:35,623 INFO L137 encePairwiseOnDemand]: 191/195 looper letters, 36 selfloop transitions, 2 changer transitions 17/58 dead transitions. [2022-12-13 18:06:35,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 473 flow [2022-12-13 18:06:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:06:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:06:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2022-12-13 18:06:35,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2022-12-13 18:06:35,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 480 transitions. [2022-12-13 18:06:35,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 480 transitions. [2022-12-13 18:06:35,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:35,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 480 transitions. [2022-12-13 18:06:35,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,627 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,627 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 151 flow. Second operand 5 states and 480 transitions. [2022-12-13 18:06:35,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 473 flow [2022-12-13 18:06:35,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 393 flow, removed 31 selfloop flow, removed 4 redundant places. [2022-12-13 18:06:35,630 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 136 flow [2022-12-13 18:06:35,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2022-12-13 18:06:35,630 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2022-12-13 18:06:35,630 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 136 flow [2022-12-13 18:06:35,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 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 18:06:35,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:35,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:06:35,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:35,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1002138242, now seen corresponding path program 2 times [2022-12-13 18:06:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786368473] [2022-12-13 18:06:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:35,714 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 18:06:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:35,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786368473] [2022-12-13 18:06:35,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786368473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:35,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:35,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:06:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264150809] [2022-12-13 18:06:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:06:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:06:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:06:35,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 195 [2022-12-13 18:06:35,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 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 18:06:35,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:35,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 195 [2022-12-13 18:06:35,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:35,814 INFO L130 PetriNetUnfolder]: 90/192 cut-off events. [2022-12-13 18:06:35,814 INFO L131 PetriNetUnfolder]: For 269/279 co-relation queries the response was YES. [2022-12-13 18:06:35,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 192 events. 90/192 cut-off events. For 269/279 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 699 event pairs, 18 based on Foata normal form. 16/198 useless extension candidates. Maximal degree in co-relation 649. Up to 65 conditions per place. [2022-12-13 18:06:35,816 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 23 selfloop transitions, 10 changer transitions 10/47 dead transitions. [2022-12-13 18:06:35,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 313 flow [2022-12-13 18:06:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:06:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:06:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 658 transitions. [2022-12-13 18:06:35,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2022-12-13 18:06:35,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 658 transitions. [2022-12-13 18:06:35,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 658 transitions. [2022-12-13 18:06:35,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:35,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 658 transitions. [2022-12-13 18:06:35,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 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 18:06:35,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,822 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,822 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 136 flow. Second operand 7 states and 658 transitions. [2022-12-13 18:06:35,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 313 flow [2022-12-13 18:06:35,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 283 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-12-13 18:06:35,824 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 147 flow [2022-12-13 18:06:35,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2022-12-13 18:06:35,825 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2022-12-13 18:06:35,825 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 147 flow [2022-12-13 18:06:35,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 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 18:06:35,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:35,825 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:06:35,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1842881959, now seen corresponding path program 1 times [2022-12-13 18:06:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448799221] [2022-12-13 18:06:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:35,897 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 18:06:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:35,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448799221] [2022-12-13 18:06:35,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448799221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:35,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:35,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:06:35,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249558916] [2022-12-13 18:06:35,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:35,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:06:35,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:06:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:06:35,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-12-13 18:06:35,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:35,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-12-13 18:06:35,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:35,967 INFO L130 PetriNetUnfolder]: 88/192 cut-off events. [2022-12-13 18:06:35,967 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2022-12-13 18:06:35,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 192 events. 88/192 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 763 event pairs, 51 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 699. Up to 137 conditions per place. [2022-12-13 18:06:35,968 INFO L137 encePairwiseOnDemand]: 191/195 looper letters, 21 selfloop transitions, 2 changer transitions 13/38 dead transitions. [2022-12-13 18:06:35,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 315 flow [2022-12-13 18:06:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:06:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:06:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2022-12-13 18:06:35,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2022-12-13 18:06:35,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2022-12-13 18:06:35,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2022-12-13 18:06:35,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:35,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2022-12-13 18:06:35,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 18:06:35,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 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 18:06:35,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 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 18:06:35,973 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 147 flow. Second operand 4 states and 380 transitions. [2022-12-13 18:06:35,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 315 flow [2022-12-13 18:06:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 245 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-12-13 18:06:35,975 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 113 flow [2022-12-13 18:06:35,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2022-12-13 18:06:35,976 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2022-12-13 18:06:35,976 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 113 flow [2022-12-13 18:06:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:06:35,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:06:35,976 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:06:35,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:06:35,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-12-13 18:06:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:06:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash 686674211, now seen corresponding path program 2 times [2022-12-13 18:06:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:06:35,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640399687] [2022-12-13 18:06:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:06:35,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:06:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:06:36,098 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 18:06:36,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:06:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640399687] [2022-12-13 18:06:36,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640399687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:06:36,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:06:36,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:06:36,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099288853] [2022-12-13 18:06:36,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:06:36,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:06:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:06:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:06:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:06:36,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2022-12-13 18:06:36,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 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 18:06:36,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:06:36,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2022-12-13 18:06:36,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:06:36,182 INFO L130 PetriNetUnfolder]: 40/99 cut-off events. [2022-12-13 18:06:36,182 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-12-13 18:06:36,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 99 events. 40/99 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 262 event pairs, 6 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 349. Up to 44 conditions per place. [2022-12-13 18:06:36,182 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2022-12-13 18:06:36,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 255 flow [2022-12-13 18:06:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:06:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:06:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 528 transitions. [2022-12-13 18:06:36,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2022-12-13 18:06:36,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 528 transitions. [2022-12-13 18:06:36,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 528 transitions. [2022-12-13 18:06:36,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:06:36,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 528 transitions. [2022-12-13 18:06:36,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 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 18:06:36,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 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 18:06:36,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 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 18:06:36,191 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 113 flow. Second operand 6 states and 528 transitions. [2022-12-13 18:06:36,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 255 flow [2022-12-13 18:06:36,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 237 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 18:06:36,193 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2022-12-13 18:06:36,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2022-12-13 18:06:36,194 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2022-12-13 18:06:36,194 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2022-12-13 18:06:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 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 18:06:36,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-12-13 18:06:36,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-12-13 18:06:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:06:36,198 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:06:36,200 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:06:36,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:06:36,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:06:36 BasicIcfg [2022-12-13 18:06:36,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:06:36,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:06:36,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:06:36,203 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:06:36,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:06:31" (3/4) ... [2022-12-13 18:06:36,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:06:36,210 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 18:06:36,210 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 18:06:36,210 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 18:06:36,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 18:06:36,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 18:06:36,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:06:36,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:06:36,236 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:06:36,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:06:36,237 INFO L158 Benchmark]: Toolchain (without parser) took 4984.39ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 97.9MB in the beginning and 80.4MB in the end (delta: 17.5MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,237 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:06:36,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.87ms. Allocated memory is still 134.2MB. Free memory was 97.5MB in the beginning and 73.9MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.45ms. Allocated memory is still 134.2MB. Free memory was 73.9MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,238 INFO L158 Benchmark]: Boogie Preprocessor took 16.93ms. Allocated memory is still 134.2MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,238 INFO L158 Benchmark]: RCFGBuilder took 307.77ms. Allocated memory is still 134.2MB. Free memory was 70.2MB in the beginning and 56.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,238 INFO L158 Benchmark]: TraceAbstraction took 4258.07ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 55.2MB in the beginning and 83.5MB in the end (delta: -28.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,238 INFO L158 Benchmark]: Witness Printer took 33.69ms. Allocated memory is still 172.0MB. Free memory was 83.5MB in the beginning and 80.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 18:06:36,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.87ms. Allocated memory is still 134.2MB. Free memory was 97.5MB in the beginning and 73.9MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.45ms. Allocated memory is still 134.2MB. Free memory was 73.9MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.93ms. Allocated memory is still 134.2MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.77ms. Allocated memory is still 134.2MB. Free memory was 70.2MB in the beginning and 56.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4258.07ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 55.2MB in the beginning and 83.5MB in the end (delta: -28.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 33.69ms. Allocated memory is still 172.0MB. Free memory was 83.5MB in the beginning and 80.4MB 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: 1.8s, 102 PlacesBefore, 35 PlacesAfterwards, 94 TransitionsBefore, 26 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 93 TotalNumberOfCompositions, 3128 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1938, independent: 1854, independent conditional: 0, independent unconditional: 1854, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 906, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1938, independent: 973, independent conditional: 0, independent unconditional: 973, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 906, unknown conditional: 0, unknown unconditional: 906] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 125 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 263 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 725 IncrementalHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 34 mSDtfsCounter, 725 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=5, InterpolantAutomatonStates: 45, 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, 0.9s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 475 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:06:36,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c493d250-4e9c-4a44-b8c7-4c29fb7380ed/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