./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R --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 b9cb80ce7b0c0db24d48a98e6e8d1fa81dc0ba8a1f2c5d148b0b0229d5ab18a1 --- 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-38b53e6 [2022-11-25 15:37:53,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:37:53,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:37:53,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:37:53,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:37:53,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:37:53,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:37:53,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:37:53,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:37:53,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:37:53,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:37:53,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:37:53,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:37:53,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:37:53,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:37:53,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:37:53,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:37:53,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:37:53,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:37:53,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:37:53,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:37:53,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:37:53,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:37:53,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:37:53,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:37:53,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:37:53,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:37:53,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:37:53,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:37:53,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:37:53,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:37:53,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:37:53,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:37:53,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:37:53,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:37:53,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:37:53,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:37:53,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:37:53,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:37:53,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:37:53,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:37:53,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:37:53,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:37:53,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:37:53,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:37:53,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:37:53,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:37:53,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:37:53,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:37:53,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:37:53,432 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:37:53,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:37:53,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:37:53,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:37:53,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:37:53,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:37:53,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:37:53,436 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:37:53,436 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:37:53,437 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:37:53,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:37:53,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:37:53,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:37:53,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:37:53,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:37:53,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:37:53,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:37:53,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:37:53,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:37:53,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:37:53,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:37:53,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:37:53,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:37:53,443 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:37:53,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:37:53,444 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_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9cb80ce7b0c0db24d48a98e6e8d1fa81dc0ba8a1f2c5d148b0b0229d5ab18a1 [2022-11-25 15:37:53,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:37:53,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:37:53,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:37:53,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:37:53,827 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:37:53,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-11-25 15:37:57,535 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:37:57,927 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:37:57,927 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-11-25 15:37:57,949 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/data/0545c7ba8/aa70950540a94d749f8b04fe65aadc94/FLAG4c4f9b5af [2022-11-25 15:37:57,967 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/data/0545c7ba8/aa70950540a94d749f8b04fe65aadc94 [2022-11-25 15:37:57,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:37:57,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:37:57,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:37:57,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:37:57,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:37:57,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:37:57" (1/1) ... [2022-11-25 15:37:57,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569c693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:57, skipping insertion in model container [2022-11-25 15:37:57,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:37:57" (1/1) ... [2022-11-25 15:37:58,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:37:58,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:37:58,371 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_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2022-11-25 15:37:58,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:37:58,639 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:37:58,656 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_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2022-11-25 15:37:58,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:37:58,761 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:37:58,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58 WrapperNode [2022-11-25 15:37:58,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:37:58,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:37:58,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:37:58,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:37:58,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,847 INFO L138 Inliner]: procedures = 163, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-25 15:37:58,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:37:58,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:37:58,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:37:58,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:37:58,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,875 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:37:58,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:37:58,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:37:58,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:37:58,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (1/1) ... [2022-11-25 15:37:58,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:37:58,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:37:58,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:37:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:37:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:37:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:37:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:37:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:37:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 15:37:59,008 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 15:37:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:37:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:37:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:37:59,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:37:59,012 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:37:59,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:37:59,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:37:59,486 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:37:59,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:37:59,496 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:37:59,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:37:59 BoogieIcfgContainer [2022-11-25 15:37:59,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:37:59,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:37:59,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:37:59,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:37:59,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:37:57" (1/3) ... [2022-11-25 15:37:59,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4c9509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:37:59, skipping insertion in model container [2022-11-25 15:37:59,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:37:58" (2/3) ... [2022-11-25 15:37:59,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4c9509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:37:59, skipping insertion in model container [2022-11-25 15:37:59,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:37:59" (3/3) ... [2022-11-25 15:37:59,509 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-11-25 15:37:59,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:37:59,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 15:37:59,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:37:59,587 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:37:59,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 197 flow [2022-11-25 15:37:59,707 INFO L130 PetriNetUnfolder]: 2/95 cut-off events. [2022-11-25 15:37:59,708 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:37:59,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-25 15:37:59,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 96 transitions, 197 flow [2022-11-25 15:37:59,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 90 transitions, 183 flow [2022-11-25 15:37:59,726 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:37:59,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 90 transitions, 183 flow [2022-11-25 15:37:59,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 90 transitions, 183 flow [2022-11-25 15:37:59,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 183 flow [2022-11-25 15:37:59,796 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2022-11-25 15:37:59,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:37:59,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2022-11-25 15:37:59,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 1054 [2022-11-25 15:38:05,640 INFO L134 LiptonReduction]: Checked pairs total: 3194 [2022-11-25 15:38:05,640 INFO L136 LiptonReduction]: Total number of compositions: 82 [2022-11-25 15:38:05,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:38:05,674 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;@53c6b3b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:38:05,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 15:38:05,676 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 15:38:05,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:38:05,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:05,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:38:05,679 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)] === [2022-11-25 15:38:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 331, now seen corresponding path program 1 times [2022-11-25 15:38:05,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:05,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108454971] [2022-11-25 15:38:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:05,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:05,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108454971] [2022-11-25 15:38:05,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108454971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:05,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:05,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:38:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409872488] [2022-11-25 15:38:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:38:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:38:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:38:05,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-11-25 15:38:05,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:05,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:05,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-11-25 15:38:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:05,903 INFO L130 PetriNetUnfolder]: 41/133 cut-off events. [2022-11-25 15:38:05,904 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:38:05,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 133 events. 41/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 474 event pairs, 35 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 219. Up to 91 conditions per place. [2022-11-25 15:38:05,907 INFO L137 encePairwiseOnDemand]: 176/178 looper letters, 15 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-11-25 15:38:05,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 75 flow [2022-11-25 15:38:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:38:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:38:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 203 transitions. [2022-11-25 15:38:05,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5702247191011236 [2022-11-25 15:38:05,923 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 203 transitions. [2022-11-25 15:38:05,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 203 transitions. [2022-11-25 15:38:05,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:05,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 203 transitions. [2022-11-25 15:38:05,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:05,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:05,939 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:05,941 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 49 flow. Second operand 2 states and 203 transitions. [2022-11-25 15:38:05,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 75 flow [2022-11-25 15:38:05,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:38:05,949 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 44 flow [2022-11-25 15:38:05,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=24, PETRI_TRANSITIONS=21} [2022-11-25 15:38:05,958 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2022-11-25 15:38:05,958 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 44 flow [2022-11-25 15:38:05,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:05,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:05,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:05,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:38:05,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:38:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1228562010, now seen corresponding path program 1 times [2022-11-25 15:38:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388059348] [2022-11-25 15:38:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:06,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388059348] [2022-11-25 15:38:06,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388059348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:06,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:06,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:38:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504316360] [2022-11-25 15:38:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:06,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:38:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:38:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:38:06,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 178 [2022-11-25 15:38:06,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:06,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 178 [2022-11-25 15:38:06,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:06,359 INFO L130 PetriNetUnfolder]: 36/117 cut-off events. [2022-11-25 15:38:06,359 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:38:06,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 117 events. 36/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 385 event pairs, 30 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 198. Up to 79 conditions per place. [2022-11-25 15:38:06,361 INFO L137 encePairwiseOnDemand]: 176/178 looper letters, 13 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-11-25 15:38:06,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 70 flow [2022-11-25 15:38:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:38:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:38:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2022-11-25 15:38:06,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2022-11-25 15:38:06,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2022-11-25 15:38:06,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2022-11-25 15:38:06,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:06,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2022-11-25 15:38:06,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,370 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 44 flow. Second operand 3 states and 282 transitions. [2022-11-25 15:38:06,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 70 flow [2022-11-25 15:38:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:38:06,371 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 44 flow [2022-11-25 15:38:06,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2022-11-25 15:38:06,372 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2022-11-25 15:38:06,372 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 44 flow [2022-11-25 15:38:06,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:06,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:06,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:38:06,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:38:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1228562030, now seen corresponding path program 1 times [2022-11-25 15:38:06,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:06,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455143685] [2022-11-25 15:38:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455143685] [2022-11-25 15:38:06,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455143685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:06,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:06,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:38:06,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939954482] [2022-11-25 15:38:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:38:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:38:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:38:06,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 178 [2022-11-25 15:38:06,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 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) [2022-11-25 15:38:06,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:06,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 178 [2022-11-25 15:38:06,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:06,619 INFO L130 PetriNetUnfolder]: 52/140 cut-off events. [2022-11-25 15:38:06,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:38:06,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 140 events. 52/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 448 event pairs, 27 based on Foata normal form. 8/140 useless extension candidates. Maximal degree in co-relation 260. Up to 74 conditions per place. [2022-11-25 15:38:06,625 INFO L137 encePairwiseOnDemand]: 173/178 looper letters, 21 selfloop transitions, 3 changer transitions 8/35 dead transitions. [2022-11-25 15:38:06,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 138 flow [2022-11-25 15:38:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:38:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:38:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2022-11-25 15:38:06,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5382022471910113 [2022-11-25 15:38:06,630 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2022-11-25 15:38:06,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2022-11-25 15:38:06,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:06,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2022-11-25 15:38:06,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,639 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 44 flow. Second operand 5 states and 479 transitions. [2022-11-25 15:38:06,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 138 flow [2022-11-25 15:38:06,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:38:06,641 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 58 flow [2022-11-25 15:38:06,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2022-11-25 15:38:06,642 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2022-11-25 15:38:06,642 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 58 flow [2022-11-25 15:38:06,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 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) [2022-11-25 15:38:06,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:06,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:38:06,643 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)] === [2022-11-25 15:38:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1211534898, now seen corresponding path program 1 times [2022-11-25 15:38:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365514989] [2022-11-25 15:38:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365514989] [2022-11-25 15:38:06,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365514989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:06,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:06,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:38:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676403434] [2022-11-25 15:38:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:38:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:38:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:38:06,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 178 [2022-11-25 15:38:06,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:06,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:06,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 178 [2022-11-25 15:38:06,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:07,007 INFO L130 PetriNetUnfolder]: 37/102 cut-off events. [2022-11-25 15:38:07,008 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-25 15:38:07,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 102 events. 37/102 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 278 event pairs, 12 based on Foata normal form. 2/98 useless extension candidates. Maximal degree in co-relation 224. Up to 55 conditions per place. [2022-11-25 15:38:07,012 INFO L137 encePairwiseOnDemand]: 173/178 looper letters, 17 selfloop transitions, 5 changer transitions 1/26 dead transitions. [2022-11-25 15:38:07,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 120 flow [2022-11-25 15:38:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:38:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:38:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-11-25 15:38:07,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957865168539326 [2022-11-25 15:38:07,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2022-11-25 15:38:07,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2022-11-25 15:38:07,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:07,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2022-11-25 15:38:07,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,028 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 58 flow. Second operand 4 states and 353 transitions. [2022-11-25 15:38:07,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 120 flow [2022-11-25 15:38:07,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 106 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-25 15:38:07,030 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 58 flow [2022-11-25 15:38:07,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2022-11-25 15:38:07,031 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2022-11-25 15:38:07,031 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 58 flow [2022-11-25 15:38:07,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:07,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:38:07,032 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)] === [2022-11-25 15:38:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1564489098, now seen corresponding path program 2 times [2022-11-25 15:38:07,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:07,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122424204] [2022-11-25 15:38:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:07,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:07,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122424204] [2022-11-25 15:38:07,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122424204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:07,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:07,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:38:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574646013] [2022-11-25 15:38:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:07,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:38:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:07,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:38:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:38:07,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 178 [2022-11-25 15:38:07,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:07,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 178 [2022-11-25 15:38:07,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:07,494 INFO L130 PetriNetUnfolder]: 24/71 cut-off events. [2022-11-25 15:38:07,494 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 15:38:07,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 71 events. 24/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 156 event pairs, 8 based on Foata normal form. 7/78 useless extension candidates. Maximal degree in co-relation 160. Up to 39 conditions per place. [2022-11-25 15:38:07,497 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 7 selfloop transitions, 4 changer transitions 12/25 dead transitions. [2022-11-25 15:38:07,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 116 flow [2022-11-25 15:38:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:38:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:38:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2022-11-25 15:38:07,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4845505617977528 [2022-11-25 15:38:07,499 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2022-11-25 15:38:07,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2022-11-25 15:38:07,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:07,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2022-11-25 15:38:07,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,504 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 58 flow. Second operand 4 states and 345 transitions. [2022-11-25 15:38:07,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 116 flow [2022-11-25 15:38:07,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:38:07,506 INFO L231 Difference]: Finished difference. Result has 29 places, 12 transitions, 41 flow [2022-11-25 15:38:07,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=41, PETRI_PLACES=29, PETRI_TRANSITIONS=12} [2022-11-25 15:38:07,511 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2022-11-25 15:38:07,511 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 12 transitions, 41 flow [2022-11-25 15:38:07,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:07,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:38:07,514 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:38:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:07,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2090173966, now seen corresponding path program 1 times [2022-11-25 15:38:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:07,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669251949] [2022-11-25 15:38:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:07,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669251949] [2022-11-25 15:38:07,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669251949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:07,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:07,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:38:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811514303] [2022-11-25 15:38:07,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:38:07,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:38:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:38:07,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 178 [2022-11-25 15:38:07,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 12 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:07,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 178 [2022-11-25 15:38:07,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:07,698 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-11-25 15:38:07,698 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:38:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 17 events. 0/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 5/22 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-11-25 15:38:07,699 INFO L137 encePairwiseOnDemand]: 174/178 looper letters, 6 selfloop transitions, 4 changer transitions 0/12 dead transitions. [2022-11-25 15:38:07,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 61 flow [2022-11-25 15:38:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:38:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:38:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2022-11-25 15:38:07,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4943820224719101 [2022-11-25 15:38:07,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2022-11-25 15:38:07,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2022-11-25 15:38:07,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:07,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2022-11-25 15:38:07,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,716 INFO L175 Difference]: Start difference. First operand has 29 places, 12 transitions, 41 flow. Second operand 3 states and 264 transitions. [2022-11-25 15:38:07,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 61 flow [2022-11-25 15:38:07,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 55 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 15:38:07,717 INFO L231 Difference]: Finished difference. Result has 21 places, 12 transitions, 43 flow [2022-11-25 15:38:07,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=21, PETRI_TRANSITIONS=12} [2022-11-25 15:38:07,718 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2022-11-25 15:38:07,718 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 12 transitions, 43 flow [2022-11-25 15:38:07,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:07,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:07,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:38:07,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 15:38:07,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash 8000760, now seen corresponding path program 2 times [2022-11-25 15:38:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:07,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230471595] [2022-11-25 15:38:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:07,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:07,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230471595] [2022-11-25 15:38:07,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230471595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:07,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:07,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:38:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709447666] [2022-11-25 15:38:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:07,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:38:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:38:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:38:08,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 178 [2022-11-25 15:38:08,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 12 transitions, 43 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:08,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:08,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 178 [2022-11-25 15:38:08,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:08,100 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-11-25 15:38:08,100 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:38:08,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 12 events. 0/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2022-11-25 15:38:08,101 INFO L137 encePairwiseOnDemand]: 174/178 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2022-11-25 15:38:08,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 10 transitions, 55 flow [2022-11-25 15:38:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:38:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:38:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2022-11-25 15:38:08,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4747191011235955 [2022-11-25 15:38:08,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2022-11-25 15:38:08,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2022-11-25 15:38:08,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:08,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2022-11-25 15:38:08,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:08,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:08,106 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:08,106 INFO L175 Difference]: Start difference. First operand has 21 places, 12 transitions, 43 flow. Second operand 4 states and 338 transitions. [2022-11-25 15:38:08,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 10 transitions, 55 flow [2022-11-25 15:38:08,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 10 transitions, 49 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:38:08,107 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2022-11-25 15:38:08,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, 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=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2022-11-25 15:38:08,107 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2022-11-25 15:38:08,107 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2022-11-25 15:38:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:08,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2022-11-25 15:38:08,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-25 15:38:08,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2022-11-25 15:38:08,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2022-11-25 15:38:08,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 15:38:08,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:38:08,112 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2022-11-25 15:38:08,116 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:38:08,116 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:38:08,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:38:08 BasicIcfg [2022-11-25 15:38:08,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:38:08,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:38:08,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:38:08,121 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:38:08,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:37:59" (3/4) ... [2022-11-25 15:38:08,124 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:38:08,131 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-25 15:38:08,135 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-25 15:38:08,135 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 15:38:08,135 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 15:38:08,135 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:38:08,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:38:08,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:38:08,171 INFO L158 Benchmark]: Toolchain (without parser) took 10198.72ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 125.2MB in the beginning and 131.6MB in the end (delta: -6.4MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,171 INFO L158 Benchmark]: CDTParser took 2.54ms. Allocated memory is still 109.1MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:38:08,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 796.32ms. Allocated memory is still 159.4MB. Free memory was 125.2MB in the beginning and 105.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.56ms. Allocated memory is still 159.4MB. Free memory was 105.4MB in the beginning and 103.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,172 INFO L158 Benchmark]: Boogie Preprocessor took 31.44ms. Allocated memory is still 159.4MB. Free memory was 103.2MB in the beginning and 102.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,172 INFO L158 Benchmark]: RCFGBuilder took 618.10ms. Allocated memory is still 159.4MB. Free memory was 102.1MB in the beginning and 87.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,173 INFO L158 Benchmark]: TraceAbstraction took 8618.50ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 87.0MB in the beginning and 134.7MB in the end (delta: -47.8MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,173 INFO L158 Benchmark]: Witness Printer took 49.81ms. Allocated memory is still 213.9MB. Free memory was 133.7MB in the beginning and 131.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:38:08,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.54ms. Allocated memory is still 109.1MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 796.32ms. Allocated memory is still 159.4MB. Free memory was 125.2MB in the beginning and 105.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.56ms. Allocated memory is still 159.4MB. Free memory was 105.4MB in the beginning and 103.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.44ms. Allocated memory is still 159.4MB. Free memory was 103.2MB in the beginning and 102.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.10ms. Allocated memory is still 159.4MB. Free memory was 102.1MB in the beginning and 87.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8618.50ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 87.0MB in the beginning and 134.7MB in the end (delta: -47.8MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Witness Printer took 49.81ms. Allocated memory is still 213.9MB. Free memory was 133.7MB in the beginning and 131.6MB 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: 5.9s, 92 PlacesBefore, 26 PlacesAfterwards, 90 TransitionsBefore, 23 TransitionsAfterwards, 1054 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 82 TotalNumberOfCompositions, 3194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1653, independent: 1439, independent conditional: 0, independent unconditional: 1439, dependent: 214, dependent conditional: 0, dependent unconditional: 214, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 786, independent: 738, independent conditional: 0, independent unconditional: 738, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 786, independent: 695, independent conditional: 0, independent unconditional: 695, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 91, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 374, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1653, independent: 701, independent conditional: 0, independent unconditional: 701, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 786, unknown conditional: 0, unknown unconditional: 786] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 699]: 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, 114 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: 8.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 471 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 781 IncrementalHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 135 mSolverCounterUnsat, 3 mSDtfsCounter, 781 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-11-25 15:38:08,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ac57aa2-c6b2-46ef-9ef9-0f7e4e7a69b6/bin/uautomizer-ZsLfNo2U6R/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