./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.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_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/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_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/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_36a59a14-a35f-40a4-ace5-0faadf576a08/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 29686c593874684b7702dd35cbbbd25416d0d0dde1b2c7e324de66da32235cfd --- 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 15:01:02,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:01:02,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:01:02,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:01:02,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:01:02,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:01:02,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:01:02,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:01:02,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:01:02,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:01:02,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:01:02,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:01:02,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:01:02,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:01:02,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:01:02,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:01:02,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:01:02,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:01:02,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:01:02,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:01:02,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:01:02,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:01:02,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:01:02,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:01:02,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:01:02,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:01:02,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:01:02,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:01:02,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:01:02,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:01:02,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:01:02,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:01:02,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:01:02,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:01:02,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:01:02,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:01:02,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:01:02,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:01:02,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:01:02,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:01:02,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:01:02,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 15:01:02,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:01:02,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:01:02,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:01:02,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:01:02,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:01:02,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:01:02,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:01:02,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:01:02,325 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:01:02,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:01:02,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 15:01:02,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:01:02,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:01:02,327 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:01:02,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:01:02,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:01:02,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:01:02,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:01:02,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:01:02,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:01:02,328 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:01:02,329 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_36a59a14-a35f-40a4-ace5-0faadf576a08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29686c593874684b7702dd35cbbbd25416d0d0dde1b2c7e324de66da32235cfd [2022-12-13 15:01:02,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:01:02,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:01:02,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:01:02,511 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:01:02,511 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:01:02,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i [2022-12-13 15:01:05,048 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:01:05,227 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:01:05,228 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i [2022-12-13 15:01:05,236 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/data/f7c222f91/d78f902b297745e9b70942e4101ea638/FLAGb60b82dc8 [2022-12-13 15:01:05,622 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/data/f7c222f91/d78f902b297745e9b70942e4101ea638 [2022-12-13 15:01:05,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:01:05,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:01:05,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:01:05,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:01:05,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:01:05,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:05,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10900406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05, skipping insertion in model container [2022-12-13 15:01:05,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:05,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:01:05,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:01:05,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:01:05,912 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:01:05,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:01:05,972 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:01:05,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05 WrapperNode [2022-12-13 15:01:05,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:01:05,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:01:05,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:01:05,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:01:05,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:05,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,009 INFO L138 Inliner]: procedures = 163, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-12-13 15:01:06,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:01:06,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:01:06,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:01:06,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:01:06,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:01:06,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:01:06,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:01:06,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:01:06,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (1/1) ... [2022-12-13 15:01:06,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:01:06,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:01:06,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:01:06,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:01:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:01:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:01:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:01:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:01:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:01:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 15:01:06,092 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 15:01:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:01:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-12-13 15:01:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:01:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:01:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:01:06,094 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 15:01:06,197 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:01:06,199 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:01:06,323 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:01:06,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:01:06,328 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:01:06,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:01:06 BoogieIcfgContainer [2022-12-13 15:01:06,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:01:06,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:01:06,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:01:06,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:01:06,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:01:05" (1/3) ... [2022-12-13 15:01:06,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60571018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:01:06, skipping insertion in model container [2022-12-13 15:01:06,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:01:05" (2/3) ... [2022-12-13 15:01:06,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60571018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:01:06, skipping insertion in model container [2022-12-13 15:01:06,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:01:06" (3/3) ... [2022-12-13 15:01:06,336 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_42-trylock_2mutex.i [2022-12-13 15:01:06,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:01:06,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-13 15:01:06,350 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:01:06,386 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 15:01:06,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 164 flow [2022-12-13 15:01:06,439 INFO L130 PetriNetUnfolder]: 2/77 cut-off events. [2022-12-13 15:01:06,439 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:01:06,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 2/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-13 15:01:06,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 164 flow [2022-12-13 15:01:06,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2022-12-13 15:01:06,448 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:01:06,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 150 flow [2022-12-13 15:01:06,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 150 flow [2022-12-13 15:01:06,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 150 flow [2022-12-13 15:01:06,473 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2022-12-13 15:01:06,473 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:01:06,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 2/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-12-13 15:01:06,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 570 [2022-12-13 15:01:08,097 INFO L134 LiptonReduction]: Checked pairs total: 1645 [2022-12-13 15:01:08,098 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-12-13 15:01:08,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:01:08,113 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;@7fe225ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:01:08,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 15:01:08,114 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:01:08,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:01:08,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:01:08,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:01:08,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 15:01:08,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:01:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash 275, now seen corresponding path program 1 times [2022-12-13 15:01:08,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:01:08,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942951324] [2022-12-13 15:01:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:01:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:01:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:01:08,199 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 15:01:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:01:08,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942951324] [2022-12-13 15:01:08,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942951324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:01:08,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:01:08,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:01:08,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492878111] [2022-12-13 15:01:08,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:01:08,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:01:08,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:01:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:01:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:01:08,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 140 [2022-12-13 15:01:08,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 15:01:08,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:01:08,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 140 [2022-12-13 15:01:08,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:01:08,282 INFO L130 PetriNetUnfolder]: 55/127 cut-off events. [2022-12-13 15:01:08,282 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:01:08,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 127 events. 55/127 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 412 event pairs, 48 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 240. Up to 122 conditions per place. [2022-12-13 15:01:08,285 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-12-13 15:01:08,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 86 flow [2022-12-13 15:01:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:01:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:01:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2022-12-13 15:01:08,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2022-12-13 15:01:08,296 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2022-12-13 15:01:08,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2022-12-13 15:01:08,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:01:08,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2022-12-13 15:01:08,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 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 15:01:08,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 15:01:08,303 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 15:01:08,305 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 54 flow. Second operand 2 states and 172 transitions. [2022-12-13 15:01:08,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 86 flow [2022-12-13 15:01:08,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:01:08,308 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 44 flow [2022-12-13 15:01:08,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2022-12-13 15:01:08,312 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2022-12-13 15:01:08,313 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 44 flow [2022-12-13 15:01:08,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 15:01:08,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:01:08,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:01:08,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:01:08,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 15:01:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:01:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1426315071, now seen corresponding path program 1 times [2022-12-13 15:01:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:01:08,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032781857] [2022-12-13 15:01:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:01:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:01:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:01:08,435 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 15:01:08,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:01:08,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032781857] [2022-12-13 15:01:08,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032781857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:01:08,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:01:08,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:01:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214580465] [2022-12-13 15:01:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:01:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:01:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:01:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:01:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:01:08,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 140 [2022-12-13 15:01:08,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 15:01:08,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:01:08,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 140 [2022-12-13 15:01:08,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:01:08,507 INFO L130 PetriNetUnfolder]: 49/114 cut-off events. [2022-12-13 15:01:08,507 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:01:08,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 114 events. 49/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 343 event pairs, 42 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 223. Up to 107 conditions per place. [2022-12-13 15:01:08,508 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 16 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-12-13 15:01:08,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 78 flow [2022-12-13 15:01:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:01:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:01:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-12-13 15:01:08,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 15:01:08,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-12-13 15:01:08,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-12-13 15:01:08,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:01:08,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-12-13 15:01:08,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 15:01:08,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,514 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 44 flow. Second operand 3 states and 220 transitions. [2022-12-13 15:01:08,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 78 flow [2022-12-13 15:01:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:01:08,516 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 46 flow [2022-12-13 15:01:08,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2022-12-13 15:01:08,517 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-12-13 15:01:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 46 flow [2022-12-13 15:01:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 15:01:08,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:01:08,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:01:08,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:01:08,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 15:01:08,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:01:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1426315070, now seen corresponding path program 1 times [2022-12-13 15:01:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:01:08,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413252901] [2022-12-13 15:01:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:01:08,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:01:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:01:08,595 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 15:01:08,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:01:08,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413252901] [2022-12-13 15:01:08,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413252901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:01:08,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:01:08,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:01:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021682287] [2022-12-13 15:01:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:01:08,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:01:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:01:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:01:08,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:01:08,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 140 [2022-12-13 15:01:08,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 15:01:08,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:01:08,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 140 [2022-12-13 15:01:08,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:01:08,650 INFO L130 PetriNetUnfolder]: 43/101 cut-off events. [2022-12-13 15:01:08,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:01:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 101 events. 43/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 284 event pairs, 36 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 199. Up to 94 conditions per place. [2022-12-13 15:01:08,651 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 15 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-12-13 15:01:08,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 78 flow [2022-12-13 15:01:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:01:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:01:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2022-12-13 15:01:08,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2022-12-13 15:01:08,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2022-12-13 15:01:08,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2022-12-13 15:01:08,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:01:08,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2022-12-13 15:01:08,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 15:01:08,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,656 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 3 states and 222 transitions. [2022-12-13 15:01:08,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 78 flow [2022-12-13 15:01:08,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:01:08,657 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2022-12-13 15:01:08,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2022-12-13 15:01:08,657 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2022-12-13 15:01:08,658 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2022-12-13 15:01:08,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 15:01:08,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:01:08,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:01:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:01:08,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 15:01:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:01:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash 111162365, now seen corresponding path program 1 times [2022-12-13 15:01:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:01:08,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099274014] [2022-12-13 15:01:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:01:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:01:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:01:08,748 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 15:01:08,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:01:08,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099274014] [2022-12-13 15:01:08,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099274014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:01:08,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:01:08,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:01:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114399407] [2022-12-13 15:01:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:01:08,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:01:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:01:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:01:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:01:08,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 140 [2022-12-13 15:01:08,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:01:08,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:01:08,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 140 [2022-12-13 15:01:08,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:01:08,813 INFO L130 PetriNetUnfolder]: 32/93 cut-off events. [2022-12-13 15:01:08,813 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:01:08,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 93 events. 32/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 12 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 185. Up to 49 conditions per place. [2022-12-13 15:01:08,814 INFO L137 encePairwiseOnDemand]: 132/140 looper letters, 21 selfloop transitions, 8 changer transitions 0/30 dead transitions. [2022-12-13 15:01:08,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 124 flow [2022-12-13 15:01:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:01:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:01:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-12-13 15:01:08,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2022-12-13 15:01:08,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-12-13 15:01:08,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-12-13 15:01:08,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:01:08,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-12-13 15:01:08,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 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 15:01:08,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,818 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 230 transitions. [2022-12-13 15:01:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 124 flow [2022-12-13 15:01:08,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:01:08,819 INFO L231 Difference]: Finished difference. Result has 24 places, 24 transitions, 84 flow [2022-12-13 15:01:08,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=24, PETRI_TRANSITIONS=24} [2022-12-13 15:01:08,820 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-12-13 15:01:08,820 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 24 transitions, 84 flow [2022-12-13 15:01:08,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:01:08,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:01:08,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:01:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:01:08,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 15:01:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:01:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1458867775, now seen corresponding path program 2 times [2022-12-13 15:01:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:01:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424141406] [2022-12-13 15:01:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:01:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:01:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:01:08,922 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 15:01:08,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:01:08,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424141406] [2022-12-13 15:01:08,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424141406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:01:08,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:01:08,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:01:08,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193975641] [2022-12-13 15:01:08,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:01:08,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:01:08,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:01:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:01:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:01:08,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2022-12-13 15:01:08,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 24 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 15:01:08,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:01:08,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2022-12-13 15:01:08,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:01:08,975 INFO L130 PetriNetUnfolder]: 30/88 cut-off events. [2022-12-13 15:01:08,975 INFO L131 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2022-12-13 15:01:08,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 88 events. 30/88 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 263 event pairs, 22 based on Foata normal form. 3/85 useless extension candidates. Maximal degree in co-relation 231. Up to 80 conditions per place. [2022-12-13 15:01:08,976 INFO L137 encePairwiseOnDemand]: 138/140 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2022-12-13 15:01:08,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 122 flow [2022-12-13 15:01:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:01:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:01:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-12-13 15:01:08,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2022-12-13 15:01:08,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-12-13 15:01:08,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-12-13 15:01:08,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:01:08,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-12-13 15:01:08,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 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 15:01:08,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:01:08,979 INFO L175 Difference]: Start difference. First operand has 24 places, 24 transitions, 84 flow. Second operand 3 states and 230 transitions. [2022-12-13 15:01:08,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 122 flow [2022-12-13 15:01:08,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:01:08,979 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2022-12-13 15:01:08,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=22, 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=3, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2022-12-13 15:01:08,980 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-12-13 15:01:08,980 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2022-12-13 15:01:08,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 15:01:08,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2022-12-13 15:01:08,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2022-12-13 15:01:08,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2022-12-13 15:01:08,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-12-13 15:01:08,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2022-12-13 15:01:08,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-13 15:01:08,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:01:08,983 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-13 15:01:08,986 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:01:08,986 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:01:08,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:01:08 BasicIcfg [2022-12-13 15:01:08,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:01:08,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:01:08,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:01:08,989 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:01:08,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:01:06" (3/4) ... [2022-12-13 15:01:08,992 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:01:08,997 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 15:01:08,999 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 15:01:09,000 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 15:01:09,000 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 15:01:09,022 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:01:09,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:01:09,023 INFO L158 Benchmark]: Toolchain (without parser) took 3398.47ms. Allocated memory was 157.3MB in the beginning and 203.4MB in the end (delta: 46.1MB). Free memory was 121.2MB in the beginning and 122.8MB in the end (delta: -1.6MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,023 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 157.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:01:09,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.86ms. Allocated memory is still 157.3MB. Free memory was 120.8MB in the beginning and 102.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.04ms. Allocated memory is still 157.3MB. Free memory was 102.0MB in the beginning and 100.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,025 INFO L158 Benchmark]: Boogie Preprocessor took 23.52ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 98.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,025 INFO L158 Benchmark]: RCFGBuilder took 295.65ms. Allocated memory is still 157.3MB. Free memory was 98.6MB in the beginning and 84.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,026 INFO L158 Benchmark]: TraceAbstraction took 2656.91ms. Allocated memory was 157.3MB in the beginning and 203.4MB in the end (delta: 46.1MB). Free memory was 84.3MB in the beginning and 124.9MB in the end (delta: -40.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,026 INFO L158 Benchmark]: Witness Printer took 33.42ms. Allocated memory is still 203.4MB. Free memory was 124.9MB in the beginning and 122.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:01:09,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 157.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.86ms. Allocated memory is still 157.3MB. Free memory was 120.8MB in the beginning and 102.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.04ms. Allocated memory is still 157.3MB. Free memory was 102.0MB in the beginning and 100.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.52ms. Allocated memory is still 157.3MB. Free memory was 100.2MB in the beginning and 98.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.65ms. Allocated memory is still 157.3MB. Free memory was 98.6MB in the beginning and 84.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2656.91ms. Allocated memory was 157.3MB in the beginning and 203.4MB in the end (delta: 46.1MB). Free memory was 84.3MB in the beginning and 124.9MB in the end (delta: -40.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Witness Printer took 33.42ms. Allocated memory is still 203.4MB. Free memory was 124.9MB in the beginning and 122.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 74 PlacesBefore, 26 PlacesAfterwards, 72 TransitionsBefore, 24 TransitionsAfterwards, 570 CoEnabledTransitionPairs, 5 FixpointIterations, 42 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, 1645 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 807, independent: 679, independent conditional: 0, independent unconditional: 679, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 304, independent: 278, independent conditional: 0, independent unconditional: 278, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 807, independent: 401, independent conditional: 0, independent unconditional: 401, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 304, unknown conditional: 0, unknown unconditional: 304] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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: 691]: 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, 94 locations, 6 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: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 199 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 12 mSDtfsCounter, 199 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=4, InterpolantAutomatonStates: 14, 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 15:01:09,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a59a14-a35f-40a4-ace5-0faadf576a08/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