./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/18_read_write_lock.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_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/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_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/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_b6625182-4e75-412b-b589-c42a2136e3e4/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 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 --- 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 15:06:54,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:06:54,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:06:54,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:06:54,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:06:54,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:06:54,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:06:54,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:06:54,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:06:54,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:06:54,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:06:54,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:06:54,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:06:54,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:06:54,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:06:54,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:06:54,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:06:54,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:06:54,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:06:54,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:06:54,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:06:54,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:06:54,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:06:54,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:06:54,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:06:54,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:06:54,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:06:54,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:06:54,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:06:54,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:06:54,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:06:54,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:06:54,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:06:54,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:06:54,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:06:54,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:06:54,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:06:54,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:06:54,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:06:54,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:06:54,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:06:54,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 15:06:54,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:06:54,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:06:54,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:06:54,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:06:54,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:06:54,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:06:54,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:06:54,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:06:54,389 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:06:54,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:06:54,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:06:54,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:06:54,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:06:54,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:06:54,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:06:54,390 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 15:06:54,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 15:06:54,391 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 15:06:54,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:06:54,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:06:54,391 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:06:54,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:06:54,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:06:54,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:06:54,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:06:54,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:06:54,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:06:54,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:06:54,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:06:54,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:06:54,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:06:54,393 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:06:54,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:06:54,393 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:06:54,394 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_b6625182-4e75-412b-b589-c42a2136e3e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 [2022-12-13 15:06:54,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:06:54,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:06:54,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:06:54,599 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:06:54,599 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:06:54,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2022-12-13 15:06:57,187 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:06:57,374 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:06:57,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2022-12-13 15:06:57,383 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/data/8ff7625c4/066fe2f2caa54261a41fe63247f4bab5/FLAGc7a72ff04 [2022-12-13 15:06:57,760 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/data/8ff7625c4/066fe2f2caa54261a41fe63247f4bab5 [2022-12-13 15:06:57,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:06:57,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:06:57,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:06:57,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:06:57,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:06:57,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:06:57" (1/1) ... [2022-12-13 15:06:57,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ee2839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:57, skipping insertion in model container [2022-12-13 15:06:57,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:06:57" (1/1) ... [2022-12-13 15:06:57,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:06:57,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:06:57,933 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:06:58,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,037 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,039 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_b6625182-4e75-412b-b589-c42a2136e3e4/sv-benchmarks/c/pthread-ext/18_read_write_lock.i[31161,31174] [2022-12-13 15:06:58,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:06:58,056 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:06:58,067 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:06:58,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,094 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_b6625182-4e75-412b-b589-c42a2136e3e4/sv-benchmarks/c/pthread-ext/18_read_write_lock.i[31161,31174] [2022-12-13 15:06:58,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:06:58,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:06:58,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:06:58,124 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:06:58,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58 WrapperNode [2022-12-13 15:06:58,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:06:58,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:06:58,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:06:58,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:06:58,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,161 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2022-12-13 15:06:58,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:06:58,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:06:58,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:06:58,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:06:58,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:06:58,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:06:58,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:06:58,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:06:58,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (1/1) ... [2022-12-13 15:06:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:06:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:06:58,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:06:58,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:06:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 15:06:58,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 15:06:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:06:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:06:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:06:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:06:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:06:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:06:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:06:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:06:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:06:58,246 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 15:06:58,332 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:06:58,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:06:58,449 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:06:58,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:06:58,494 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:06:58,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:06:58 BoogieIcfgContainer [2022-12-13 15:06:58,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:06:58,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:06:58,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:06:58,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:06:58,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:06:57" (1/3) ... [2022-12-13 15:06:58,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff1f55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:06:58, skipping insertion in model container [2022-12-13 15:06:58,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:06:58" (2/3) ... [2022-12-13 15:06:58,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff1f55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:06:58, skipping insertion in model container [2022-12-13 15:06:58,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:06:58" (3/3) ... [2022-12-13 15:06:58,505 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2022-12-13 15:06:58,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:06:58,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 15:06:58,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:06:58,549 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:06:58,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 131 flow [2022-12-13 15:06:58,603 INFO L130 PetriNetUnfolder]: 1/62 cut-off events. [2022-12-13 15:06:58,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:06:58,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-13 15:06:58,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 63 transitions, 131 flow [2022-12-13 15:06:58,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 57 transitions, 117 flow [2022-12-13 15:06:58,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:06:58,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 117 flow [2022-12-13 15:06:58,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 117 flow [2022-12-13 15:06:58,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 117 flow [2022-12-13 15:06:58,631 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-12-13 15:06:58,631 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:06:58,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2022-12-13 15:06:58,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 324 [2022-12-13 15:06:59,911 INFO L134 LiptonReduction]: Checked pairs total: 693 [2022-12-13 15:06:59,912 INFO L136 LiptonReduction]: Total number of compositions: 58 [2022-12-13 15:06:59,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:06:59,927 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;@7ace40da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:06:59,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 15:06:59,928 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:06:59,928 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:06:59,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:06:59,928 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:06:59,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-12-13 15:06:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:06:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash 297, now seen corresponding path program 1 times [2022-12-13 15:06:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:06:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560860834] [2022-12-13 15:06:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:06:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:06:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:00,010 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 15:07:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:00,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560860834] [2022-12-13 15:07:00,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560860834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:00,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:00,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:07:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588836557] [2022-12-13 15:07:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:00,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:07:00,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:00,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:07:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:07:00,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 121 [2022-12-13 15:07:00,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:00,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 121 [2022-12-13 15:07:00,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:00,061 INFO L130 PetriNetUnfolder]: 10/31 cut-off events. [2022-12-13 15:07:00,061 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:07:00,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 31 events. 10/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 76 event pairs, 10 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 56. Up to 30 conditions per place. [2022-12-13 15:07:00,062 INFO L137 encePairwiseOnDemand]: 118/121 looper letters, 9 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2022-12-13 15:07:00,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 41 flow [2022-12-13 15:07:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:07:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:07:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 128 transitions. [2022-12-13 15:07:00,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5289256198347108 [2022-12-13 15:07:00,075 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 128 transitions. [2022-12-13 15:07:00,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 128 transitions. [2022-12-13 15:07:00,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:00,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 128 transitions. [2022-12-13 15:07:00,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 15:07:00,085 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 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 15:07:00,087 INFO L175 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 2 states and 128 transitions. [2022-12-13 15:07:00,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 41 flow [2022-12-13 15:07:00,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:07:00,091 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 22 flow [2022-12-13 15:07:00,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2022-12-13 15:07:00,095 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2022-12-13 15:07:00,096 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 22 flow [2022-12-13 15:07:00,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:00,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:07:00,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:07:00,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-12-13 15:07:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:00,097 INFO L85 PathProgramCache]: Analyzing trace with hash 281692319, now seen corresponding path program 1 times [2022-12-13 15:07:00,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:00,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423672596] [2022-12-13 15:07:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:00,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:00,205 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 15:07:00,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:00,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423672596] [2022-12-13 15:07:00,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423672596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:00,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:07:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954997478] [2022-12-13 15:07:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:07:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:00,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:07:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:07:00,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 121 [2022-12-13 15:07:00,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 15:07:00,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:00,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 121 [2022-12-13 15:07:00,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:00,249 INFO L130 PetriNetUnfolder]: 14/43 cut-off events. [2022-12-13 15:07:00,249 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:07:00,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 43 events. 14/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 109 event pairs, 5 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 88. Up to 24 conditions per place. [2022-12-13 15:07:00,249 INFO L137 encePairwiseOnDemand]: 117/121 looper letters, 12 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2022-12-13 15:07:00,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 15 transitions, 62 flow [2022-12-13 15:07:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:07:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:07:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2022-12-13 15:07:00,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4903581267217631 [2022-12-13 15:07:00,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2022-12-13 15:07:00,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2022-12-13 15:07:00,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:00,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2022-12-13 15:07:00,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 15:07:00,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,255 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 22 flow. Second operand 3 states and 178 transitions. [2022-12-13 15:07:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 15 transitions, 62 flow [2022-12-13 15:07:00,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:07:00,256 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 40 flow [2022-12-13 15:07:00,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2022-12-13 15:07:00,256 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2022-12-13 15:07:00,257 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 40 flow [2022-12-13 15:07:00,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 15:07:00,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:00,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:07:00,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:07:00,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-12-13 15:07:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash 142526691, now seen corresponding path program 1 times [2022-12-13 15:07:00,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:00,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904684176] [2022-12-13 15:07:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:00,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:00,382 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 15:07:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904684176] [2022-12-13 15:07:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904684176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:00,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:00,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:07:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377404461] [2022-12-13 15:07:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:00,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:07:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:07:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:07:00,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 121 [2022-12-13 15:07:00,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 15:07:00,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:00,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 121 [2022-12-13 15:07:00,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:00,421 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2022-12-13 15:07:00,421 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 15:07:00,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 30 events. 8/30 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 8 based on Foata normal form. 5/35 useless extension candidates. Maximal degree in co-relation 75. Up to 27 conditions per place. [2022-12-13 15:07:00,422 INFO L137 encePairwiseOnDemand]: 119/121 looper letters, 6 selfloop transitions, 1 changer transitions 2/10 dead transitions. [2022-12-13 15:07:00,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 56 flow [2022-12-13 15:07:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:07:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:07:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-12-13 15:07:00,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2022-12-13 15:07:00,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-12-13 15:07:00,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-12-13 15:07:00,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:00,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-12-13 15:07:00,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 15:07:00,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,427 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 40 flow. Second operand 3 states and 171 transitions. [2022-12-13 15:07:00,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 56 flow [2022-12-13 15:07:00,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:07:00,428 INFO L231 Difference]: Finished difference. Result has 17 places, 8 transitions, 28 flow [2022-12-13 15:07:00,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2022-12-13 15:07:00,428 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2022-12-13 15:07:00,429 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 28 flow [2022-12-13 15:07:00,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 15:07:00,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:00,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:07:00,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:07:00,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-12-13 15:07:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash 123382600, now seen corresponding path program 1 times [2022-12-13 15:07:00,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:00,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370530836] [2022-12-13 15:07:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:00,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:00,505 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 15:07:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:00,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370530836] [2022-12-13 15:07:00,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370530836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:00,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:00,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:07:00,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101617737] [2022-12-13 15:07:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:00,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:07:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:07:00,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:07:00,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 121 [2022-12-13 15:07:00,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 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 15:07:00,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:00,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 121 [2022-12-13 15:07:00,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:00,527 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2022-12-13 15:07:00,527 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:07:00,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 1 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2022-12-13 15:07:00,528 INFO L137 encePairwiseOnDemand]: 118/121 looper letters, 5 selfloop transitions, 2 changer transitions 1/9 dead transitions. [2022-12-13 15:07:00,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 46 flow [2022-12-13 15:07:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:07:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:07:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2022-12-13 15:07:00,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48140495867768596 [2022-12-13 15:07:00,530 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 233 transitions. [2022-12-13 15:07:00,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 233 transitions. [2022-12-13 15:07:00,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:00,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 233 transitions. [2022-12-13 15:07:00,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 15:07:00,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 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 15:07:00,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 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 15:07:00,533 INFO L175 Difference]: Start difference. First operand has 17 places, 8 transitions, 28 flow. Second operand 4 states and 233 transitions. [2022-12-13 15:07:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 46 flow [2022-12-13 15:07:00,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 9 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:07:00,534 INFO L231 Difference]: Finished difference. Result has 19 places, 8 transitions, 34 flow [2022-12-13 15:07:00,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=8} [2022-12-13 15:07:00,535 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2022-12-13 15:07:00,535 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 8 transitions, 34 flow [2022-12-13 15:07:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 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 15:07:00,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:07:00,536 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:07:00,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:07:00,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-12-13 15:07:00,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:07:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 83164750, now seen corresponding path program 2 times [2022-12-13 15:07:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:07:00,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503429484] [2022-12-13 15:07:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:07:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:07:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:07:00,588 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 15:07:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:07:00,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503429484] [2022-12-13 15:07:00,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503429484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:07:00,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:07:00,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:07:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689847739] [2022-12-13 15:07:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:07:00,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:07:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:07:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:07:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:07:00,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 121 [2022-12-13 15:07:00,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 8 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:07:00,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 121 [2022-12-13 15:07:00,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:07:00,602 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 15:07:00,603 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 15:07:00,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 8 events. 0/8 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-12-13 15:07:00,603 INFO L137 encePairwiseOnDemand]: 118/121 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2022-12-13 15:07:00,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 42 flow [2022-12-13 15:07:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:07:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:07:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2022-12-13 15:07:00,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4820936639118457 [2022-12-13 15:07:00,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2022-12-13 15:07:00,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2022-12-13 15:07:00,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:07:00,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2022-12-13 15:07:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,607 INFO L175 Difference]: Start difference. First operand has 19 places, 8 transitions, 34 flow. Second operand 3 states and 175 transitions. [2022-12-13 15:07:00,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 42 flow [2022-12-13 15:07:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 7 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:07:00,608 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2022-12-13 15:07:00,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2022-12-13 15:07:00,608 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2022-12-13 15:07:00,608 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2022-12-13 15:07:00,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:07:00,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2022-12-13 15:07:00,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-12-13 15:07:00,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2022-12-13 15:07:00,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2022-12-13 15:07:00,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-13 15:07:00,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:07:00,611 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-13 15:07:00,613 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:07:00,613 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:07:00,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:07:00 BasicIcfg [2022-12-13 15:07:00,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:07:00,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:07:00,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:07:00,616 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:07:00,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:06:58" (3/4) ... [2022-12-13 15:07:00,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:07:00,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-12-13 15:07:00,626 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 15:07:00,626 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-13 15:07:00,626 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 15:07:00,626 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:07:00,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:07:00,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:07:00,652 INFO L158 Benchmark]: Toolchain (without parser) took 2888.69ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 76.6MB in the end (delta: 46.0MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-12-13 15:07:00,652 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:07:00,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.01ms. Allocated memory is still 159.4MB. Free memory was 122.1MB in the beginning and 101.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 15:07:00,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.12ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 99.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:07:00,653 INFO L158 Benchmark]: Boogie Preprocessor took 18.99ms. Allocated memory is still 159.4MB. Free memory was 99.0MB in the beginning and 97.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:07:00,653 INFO L158 Benchmark]: RCFGBuilder took 314.98ms. Allocated memory is still 159.4MB. Free memory was 97.4MB in the beginning and 81.8MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:07:00,653 INFO L158 Benchmark]: TraceAbstraction took 2117.03ms. Allocated memory is still 159.4MB. Free memory was 81.0MB in the beginning and 79.7MB in the end (delta: 1.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2022-12-13 15:07:00,654 INFO L158 Benchmark]: Witness Printer took 34.54ms. Allocated memory is still 159.4MB. Free memory was 79.7MB in the beginning and 76.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 15:07:00,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.01ms. Allocated memory is still 159.4MB. Free memory was 122.1MB in the beginning and 101.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.12ms. Allocated memory is still 159.4MB. Free memory was 101.1MB in the beginning and 99.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.99ms. Allocated memory is still 159.4MB. Free memory was 99.0MB in the beginning and 97.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 314.98ms. Allocated memory is still 159.4MB. Free memory was 97.4MB in the beginning and 81.8MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2117.03ms. Allocated memory is still 159.4MB. Free memory was 81.0MB in the beginning and 79.7MB in the end (delta: 1.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 34.54ms. Allocated memory is still 159.4MB. Free memory was 79.7MB in the beginning and 76.6MB 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: 1.3s, 60 PlacesBefore, 16 PlacesAfterwards, 57 TransitionsBefore, 13 TransitionsAfterwards, 324 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 442, independent: 362, independent conditional: 0, independent unconditional: 362, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 194, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 442, independent: 188, independent conditional: 0, independent unconditional: 188, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 194, unknown conditional: 0, unknown unconditional: 194] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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: 738]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 747]: 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 3 procedures, 71 locations, 5 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: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 15:07:00,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6625182-4e75-412b-b589-c42a2136e3e4/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