./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:03:01,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:03:01,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:03:01,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:03:01,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:03:01,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:03:01,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:03:01,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:03:01,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:03:01,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:03:01,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:03:01,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:03:01,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:03:01,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:03:01,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:03:01,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:03:01,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:03:01,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:03:01,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:03:01,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:03:01,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:03:01,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:03:01,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:03:01,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:03:01,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:03:01,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:03:01,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:03:01,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:03:01,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:03:01,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:03:01,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:03:01,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:03:01,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:03:01,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:03:01,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:03:01,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:03:01,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:03:01,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:03:01,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:03:01,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:03:01,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:03:01,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:03:01,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:03:01,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:03:01,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:03:01,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:03:01,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:03:01,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:03:01,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:03:01,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:03:01,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:03:01,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:03:01,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:03:01,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:03:01,381 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:03:01,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:03:01,382 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:03:01,382 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_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 [2022-12-13 21:03:01,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:03:01,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:03:01,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:03:01,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:03:01,575 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:03:01,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-12-13 21:03:04,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:03:04,340 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:03:04,341 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-12-13 21:03:04,349 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/data/8d6d9eddc/b71225cc3764443c9ece8073a50981f3/FLAG4b85015cc [2022-12-13 21:03:04,359 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/data/8d6d9eddc/b71225cc3764443c9ece8073a50981f3 [2022-12-13 21:03:04,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:03:04,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:03:04,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:04,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:03:04,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:03:04,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e9c923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04, skipping insertion in model container [2022-12-13 21:03:04,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:03:04,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:03:04,504 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_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-12-13 21:03:04,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:04,607 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:03:04,616 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_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-12-13 21:03:04,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:04,659 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:03:04,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04 WrapperNode [2022-12-13 21:03:04,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:04,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:04,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:03:04,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:03:04,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,692 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-12-13 21:03:04,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:04,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:03:04,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:03:04,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:03:04,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:03:04,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:03:04,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:03:04,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:03:04,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (1/1) ... [2022-12-13 21:03:04,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:03:04,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:04,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:04,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:03:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:03:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:03:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:03:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:03:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 21:03:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 21:03:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:03:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:03:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:03:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:03:04,771 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:03:04,872 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:03:04,874 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:03:05,120 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:03:05,129 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:03:05,129 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:03:05,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:05 BoogieIcfgContainer [2022-12-13 21:03:05,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:03:05,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:03:05,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:03:05,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:03:05,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:03:04" (1/3) ... [2022-12-13 21:03:05,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d800a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:03:05, skipping insertion in model container [2022-12-13 21:03:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:04" (2/3) ... [2022-12-13 21:03:05,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d800a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:03:05, skipping insertion in model container [2022-12-13 21:03:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:05" (3/3) ... [2022-12-13 21:03:05,142 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-12-13 21:03:05,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:03:05,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 21:03:05,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:03:05,210 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:03:05,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 189 transitions, 383 flow [2022-12-13 21:03:05,294 INFO L130 PetriNetUnfolder]: 8/195 cut-off events. [2022-12-13 21:03:05,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:03:05,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 195 events. 8/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 192 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-12-13 21:03:05,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 189 transitions, 383 flow [2022-12-13 21:03:05,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 188 transitions, 379 flow [2022-12-13 21:03:05,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:03:05,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 188 transitions, 379 flow [2022-12-13 21:03:05,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 188 transitions, 379 flow [2022-12-13 21:03:05,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 188 transitions, 379 flow [2022-12-13 21:03:05,345 INFO L130 PetriNetUnfolder]: 8/195 cut-off events. [2022-12-13 21:03:05,345 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:03:05,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 195 events. 8/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 192 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-12-13 21:03:05,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 9240 [2022-12-13 21:03:09,740 INFO L134 LiptonReduction]: Checked pairs total: 14872 [2022-12-13 21:03:09,741 INFO L136 LiptonReduction]: Total number of compositions: 207 [2022-12-13 21:03:09,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:03:09,756 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;@3b338eef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:03:09,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 21:03:09,757 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:03:09,757 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:03:09,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:09,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:03:09,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash 741, now seen corresponding path program 1 times [2022-12-13 21:03:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:09,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039960894] [2022-12-13 21:03:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:09,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:09,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039960894] [2022-12-13 21:03:09,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039960894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:09,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:09,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:03:09,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445166635] [2022-12-13 21:03:09,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:09,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:03:09,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:03:09,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:03:09,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 396 [2022-12-13 21:03:09,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 79 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:09,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:09,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 396 [2022-12-13 21:03:09,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:09,951 INFO L130 PetriNetUnfolder]: 113/301 cut-off events. [2022-12-13 21:03:09,952 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:03:09,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 301 events. 113/301 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1283 event pairs, 104 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 534. Up to 243 conditions per place. [2022-12-13 21:03:09,955 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 25 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-12-13 21:03:09,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 117 flow [2022-12-13 21:03:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:03:09,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:03:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 385 transitions. [2022-12-13 21:03:09,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2022-12-13 21:03:09,970 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 385 transitions. [2022-12-13 21:03:09,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 385 transitions. [2022-12-13 21:03:09,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:09,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 385 transitions. [2022-12-13 21:03:09,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:09,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:09,983 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:09,984 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 79 flow. Second operand 2 states and 385 transitions. [2022-12-13 21:03:09,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 117 flow [2022-12-13 21:03:09,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:03:09,987 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 66 flow [2022-12-13 21:03:09,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-13 21:03:09,992 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2022-12-13 21:03:09,992 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 66 flow [2022-12-13 21:03:09,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:09,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:09,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:03:09,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:03:09,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:09,993 INFO L85 PathProgramCache]: Analyzing trace with hash 23223, now seen corresponding path program 1 times [2022-12-13 21:03:09,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:09,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789699946] [2022-12-13 21:03:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:09,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:10,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789699946] [2022-12-13 21:03:10,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789699946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:10,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:10,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:03:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158635085] [2022-12-13 21:03:10,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:10,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:03:10,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:10,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:03:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:03:10,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 396 [2022-12-13 21:03:10,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:10,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 396 [2022-12-13 21:03:10,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:10,164 INFO L130 PetriNetUnfolder]: 127/314 cut-off events. [2022-12-13 21:03:10,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:03:10,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 314 events. 127/314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1259 event pairs, 104 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 586. Up to 241 conditions per place. [2022-12-13 21:03:10,167 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 34 selfloop transitions, 1 changer transitions 6/47 dead transitions. [2022-12-13 21:03:10,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 178 flow [2022-12-13 21:03:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:03:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:03:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-12-13 21:03:10,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2022-12-13 21:03:10,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-12-13 21:03:10,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-12-13 21:03:10,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:10,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-12-13 21:03:10,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,176 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 66 flow. Second operand 3 states and 558 transitions. [2022-12-13 21:03:10,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 178 flow [2022-12-13 21:03:10,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:03:10,177 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 69 flow [2022-12-13 21:03:10,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2022-12-13 21:03:10,178 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2022-12-13 21:03:10,178 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 69 flow [2022-12-13 21:03:10,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:10,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:03:10,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:03:10,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash 254250025, now seen corresponding path program 1 times [2022-12-13 21:03:10,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:10,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078623455] [2022-12-13 21:03:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:10,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078623455] [2022-12-13 21:03:10,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078623455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:10,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:10,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:03:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634192522] [2022-12-13 21:03:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:03:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:03:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:03:10,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 396 [2022-12-13 21:03:10,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:10,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 396 [2022-12-13 21:03:10,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:10,526 INFO L130 PetriNetUnfolder]: 119/339 cut-off events. [2022-12-13 21:03:10,526 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 21:03:10,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 339 events. 119/339 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1455 event pairs, 10 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 625. Up to 169 conditions per place. [2022-12-13 21:03:10,528 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2022-12-13 21:03:10,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 221 flow [2022-12-13 21:03:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:03:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:03:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2022-12-13 21:03:10,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4580808080808081 [2022-12-13 21:03:10,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2022-12-13 21:03:10,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2022-12-13 21:03:10,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:10,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2022-12-13 21:03:10,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,538 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 69 flow. Second operand 5 states and 907 transitions. [2022-12-13 21:03:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 221 flow [2022-12-13 21:03:10,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 217 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:03:10,540 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 96 flow [2022-12-13 21:03:10,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2022-12-13 21:03:10,541 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2022-12-13 21:03:10,541 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 96 flow [2022-12-13 21:03:10,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:10,541 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:10,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:03:10,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash -478895054, now seen corresponding path program 1 times [2022-12-13 21:03:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:10,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658491872] [2022-12-13 21:03:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658491872] [2022-12-13 21:03:10,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658491872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:10,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:10,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:03:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101882277] [2022-12-13 21:03:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:10,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:03:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:03:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:03:10,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 396 [2022-12-13 21:03:10,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:10,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 396 [2022-12-13 21:03:10,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:10,894 INFO L130 PetriNetUnfolder]: 141/396 cut-off events. [2022-12-13 21:03:10,894 INFO L131 PetriNetUnfolder]: For 68/70 co-relation queries the response was YES. [2022-12-13 21:03:10,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 396 events. 141/396 cut-off events. For 68/70 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1950 event pairs, 30 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 825. Up to 121 conditions per place. [2022-12-13 21:03:10,895 INFO L137 encePairwiseOnDemand]: 386/396 looper letters, 52 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2022-12-13 21:03:10,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 365 flow [2022-12-13 21:03:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:03:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:03:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2059 transitions. [2022-12-13 21:03:10,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4332912457912458 [2022-12-13 21:03:10,899 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2059 transitions. [2022-12-13 21:03:10,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2059 transitions. [2022-12-13 21:03:10,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:10,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2059 transitions. [2022-12-13 21:03:10,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 171.58333333333334) internal successors, (2059), 12 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 396.0) internal successors, (5148), 13 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,909 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 396.0) internal successors, (5148), 13 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,909 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 96 flow. Second operand 12 states and 2059 transitions. [2022-12-13 21:03:10,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 365 flow [2022-12-13 21:03:10,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:03:10,911 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 217 flow [2022-12-13 21:03:10,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2022-12-13 21:03:10,911 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2022-12-13 21:03:10,911 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 217 flow [2022-12-13 21:03:10,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:10,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:10,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:03:10,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -964728983, now seen corresponding path program 1 times [2022-12-13 21:03:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260497577] [2022-12-13 21:03:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:10,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260497577] [2022-12-13 21:03:10,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260497577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:10,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:10,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:03:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648133093] [2022-12-13 21:03:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:10,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:03:10,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:03:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:03:10,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 396 [2022-12-13 21:03:10,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:10,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:10,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 396 [2022-12-13 21:03:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:11,089 INFO L130 PetriNetUnfolder]: 178/469 cut-off events. [2022-12-13 21:03:11,089 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-12-13 21:03:11,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 469 events. 178/469 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2302 event pairs, 62 based on Foata normal form. 15/450 useless extension candidates. Maximal degree in co-relation 1185. Up to 279 conditions per place. [2022-12-13 21:03:11,091 INFO L137 encePairwiseOnDemand]: 386/396 looper letters, 59 selfloop transitions, 14 changer transitions 0/76 dead transitions. [2022-12-13 21:03:11,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 460 flow [2022-12-13 21:03:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:03:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:03:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2022-12-13 21:03:11,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2022-12-13 21:03:11,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2022-12-13 21:03:11,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2022-12-13 21:03:11,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:11,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2022-12-13 21:03:11,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,095 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 217 flow. Second operand 3 states and 555 transitions. [2022-12-13 21:03:11,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 460 flow [2022-12-13 21:03:11,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 420 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 21:03:11,098 INFO L231 Difference]: Finished difference. Result has 53 places, 56 transitions, 261 flow [2022-12-13 21:03:11,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=53, PETRI_TRANSITIONS=56} [2022-12-13 21:03:11,098 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2022-12-13 21:03:11,098 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 261 flow [2022-12-13 21:03:11,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:11,099 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:11,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:03:11,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash -656538143, now seen corresponding path program 1 times [2022-12-13 21:03:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:11,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358809467] [2022-12-13 21:03:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:11,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358809467] [2022-12-13 21:03:11,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358809467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:11,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:11,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:03:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609622107] [2022-12-13 21:03:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:03:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:03:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:03:11,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 396 [2022-12-13 21:03:11,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:11,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 396 [2022-12-13 21:03:11,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:11,408 INFO L130 PetriNetUnfolder]: 176/493 cut-off events. [2022-12-13 21:03:11,408 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-12-13 21:03:11,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 493 events. 176/493 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2593 event pairs, 78 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 1404. Up to 190 conditions per place. [2022-12-13 21:03:11,419 INFO L137 encePairwiseOnDemand]: 388/396 looper letters, 74 selfloop transitions, 12 changer transitions 1/96 dead transitions. [2022-12-13 21:03:11,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 592 flow [2022-12-13 21:03:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:03:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:03:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1397 transitions. [2022-12-13 21:03:11,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2022-12-13 21:03:11,424 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1397 transitions. [2022-12-13 21:03:11,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1397 transitions. [2022-12-13 21:03:11,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:11,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1397 transitions. [2022-12-13 21:03:11,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 174.625) internal successors, (1397), 8 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 396.0) internal successors, (3564), 9 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,429 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 396.0) internal successors, (3564), 9 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,429 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 261 flow. Second operand 8 states and 1397 transitions. [2022-12-13 21:03:11,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 592 flow [2022-12-13 21:03:11,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:03:11,432 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 312 flow [2022-12-13 21:03:11,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2022-12-13 21:03:11,432 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2022-12-13 21:03:11,432 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 312 flow [2022-12-13 21:03:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:11,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:11,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:03:11,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:11,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:11,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1216240139, now seen corresponding path program 1 times [2022-12-13 21:03:11,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:11,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183127996] [2022-12-13 21:03:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:11,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:11,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183127996] [2022-12-13 21:03:11,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183127996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:11,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:11,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:03:11,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860612666] [2022-12-13 21:03:11,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:11,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:03:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:03:11,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:03:11,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 396 [2022-12-13 21:03:11,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:11,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 396 [2022-12-13 21:03:11,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:11,706 INFO L130 PetriNetUnfolder]: 170/496 cut-off events. [2022-12-13 21:03:11,706 INFO L131 PetriNetUnfolder]: For 320/325 co-relation queries the response was YES. [2022-12-13 21:03:11,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 496 events. 170/496 cut-off events. For 320/325 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2682 event pairs, 60 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 1414. Up to 273 conditions per place. [2022-12-13 21:03:11,709 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 69 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2022-12-13 21:03:11,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 592 flow [2022-12-13 21:03:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:03:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:03:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 896 transitions. [2022-12-13 21:03:11,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45252525252525255 [2022-12-13 21:03:11,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 896 transitions. [2022-12-13 21:03:11,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 896 transitions. [2022-12-13 21:03:11,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:11,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 896 transitions. [2022-12-13 21:03:11,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,718 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,718 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 312 flow. Second operand 5 states and 896 transitions. [2022-12-13 21:03:11,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 592 flow [2022-12-13 21:03:11,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 574 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:03:11,722 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 338 flow [2022-12-13 21:03:11,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2022-12-13 21:03:11,723 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2022-12-13 21:03:11,723 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 338 flow [2022-12-13 21:03:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:11,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:03:11,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1573633877, now seen corresponding path program 1 times [2022-12-13 21:03:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:11,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110704534] [2022-12-13 21:03:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:11,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:11,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110704534] [2022-12-13 21:03:11,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110704534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:11,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:11,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:03:11,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682241146] [2022-12-13 21:03:11,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:11,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:03:11,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:03:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:03:11,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 396 [2022-12-13 21:03:11,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:11,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 396 [2022-12-13 21:03:11,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:11,960 INFO L130 PetriNetUnfolder]: 172/489 cut-off events. [2022-12-13 21:03:11,960 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2022-12-13 21:03:11,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 489 events. 172/489 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2566 event pairs, 80 based on Foata normal form. 4/472 useless extension candidates. Maximal degree in co-relation 1482. Up to 189 conditions per place. [2022-12-13 21:03:11,963 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 72 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2022-12-13 21:03:11,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 630 flow [2022-12-13 21:03:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:03:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:03:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1247 transitions. [2022-12-13 21:03:11,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44985569985569984 [2022-12-13 21:03:11,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1247 transitions. [2022-12-13 21:03:11,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1247 transitions. [2022-12-13 21:03:11,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:11,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1247 transitions. [2022-12-13 21:03:11,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,974 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,974 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 338 flow. Second operand 7 states and 1247 transitions. [2022-12-13 21:03:11,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 630 flow [2022-12-13 21:03:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 609 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:03:11,979 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 375 flow [2022-12-13 21:03:11,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2022-12-13 21:03:11,980 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2022-12-13 21:03:11,980 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 375 flow [2022-12-13 21:03:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:11,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:11,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:11,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:03:11,981 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:11,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash 575635860, now seen corresponding path program 1 times [2022-12-13 21:03:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:11,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550487090] [2022-12-13 21:03:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:12,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550487090] [2022-12-13 21:03:12,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550487090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:12,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:12,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:03:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962331389] [2022-12-13 21:03:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:12,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:03:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:03:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:03:12,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 396 [2022-12-13 21:03:12,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:12,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 396 [2022-12-13 21:03:12,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:12,303 INFO L130 PetriNetUnfolder]: 169/470 cut-off events. [2022-12-13 21:03:12,303 INFO L131 PetriNetUnfolder]: For 499/501 co-relation queries the response was YES. [2022-12-13 21:03:12,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 470 events. 169/470 cut-off events. For 499/501 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2421 event pairs, 61 based on Foata normal form. 6/457 useless extension candidates. Maximal degree in co-relation 1536. Up to 254 conditions per place. [2022-12-13 21:03:12,306 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 74 selfloop transitions, 12 changer transitions 3/95 dead transitions. [2022-12-13 21:03:12,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 712 flow [2022-12-13 21:03:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:03:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:03:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 719 transitions. [2022-12-13 21:03:12,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45391414141414144 [2022-12-13 21:03:12,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 719 transitions. [2022-12-13 21:03:12,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 719 transitions. [2022-12-13 21:03:12,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:12,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 719 transitions. [2022-12-13 21:03:12,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,314 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 375 flow. Second operand 4 states and 719 transitions. [2022-12-13 21:03:12,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 712 flow [2022-12-13 21:03:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 702 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 21:03:12,320 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 417 flow [2022-12-13 21:03:12,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2022-12-13 21:03:12,321 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2022-12-13 21:03:12,321 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 417 flow [2022-12-13 21:03:12,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:12,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:12,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:03:12,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash 779382190, now seen corresponding path program 1 times [2022-12-13 21:03:12,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:12,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210854791] [2022-12-13 21:03:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:12,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210854791] [2022-12-13 21:03:12,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210854791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:12,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:12,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:03:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089570961] [2022-12-13 21:03:12,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:03:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:12,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:03:12,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:03:12,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 396 [2022-12-13 21:03:12,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:12,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 396 [2022-12-13 21:03:12,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:12,588 INFO L130 PetriNetUnfolder]: 145/427 cut-off events. [2022-12-13 21:03:12,588 INFO L131 PetriNetUnfolder]: For 534/538 co-relation queries the response was YES. [2022-12-13 21:03:12,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 427 events. 145/427 cut-off events. For 534/538 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2171 event pairs, 24 based on Foata normal form. 10/423 useless extension candidates. Maximal degree in co-relation 1502. Up to 150 conditions per place. [2022-12-13 21:03:12,591 INFO L137 encePairwiseOnDemand]: 390/396 looper letters, 68 selfloop transitions, 11 changer transitions 1/93 dead transitions. [2022-12-13 21:03:12,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 708 flow [2022-12-13 21:03:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:03:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:03:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1410 transitions. [2022-12-13 21:03:12,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44507575757575757 [2022-12-13 21:03:12,595 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1410 transitions. [2022-12-13 21:03:12,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1410 transitions. [2022-12-13 21:03:12,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:12,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1410 transitions. [2022-12-13 21:03:12,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 396.0) internal successors, (3564), 9 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 396.0) internal successors, (3564), 9 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,604 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 417 flow. Second operand 8 states and 1410 transitions. [2022-12-13 21:03:12,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 708 flow [2022-12-13 21:03:12,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 698 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:03:12,608 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 423 flow [2022-12-13 21:03:12,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2022-12-13 21:03:12,609 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2022-12-13 21:03:12,609 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 423 flow [2022-12-13 21:03:12,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:12,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:12,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:03:12,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:12,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1993855113, now seen corresponding path program 1 times [2022-12-13 21:03:12,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:12,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572791914] [2022-12-13 21:03:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:12,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572791914] [2022-12-13 21:03:12,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572791914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:12,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:12,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:03:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759554818] [2022-12-13 21:03:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:03:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:03:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:03:12,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 396 [2022-12-13 21:03:12,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:12,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 396 [2022-12-13 21:03:12,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:12,808 INFO L130 PetriNetUnfolder]: 145/409 cut-off events. [2022-12-13 21:03:12,808 INFO L131 PetriNetUnfolder]: For 642/650 co-relation queries the response was YES. [2022-12-13 21:03:12,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 409 events. 145/409 cut-off events. For 642/650 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1999 event pairs, 59 based on Foata normal form. 3/395 useless extension candidates. Maximal degree in co-relation 1506. Up to 221 conditions per place. [2022-12-13 21:03:12,810 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 42 selfloop transitions, 5 changer transitions 28/84 dead transitions. [2022-12-13 21:03:12,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 661 flow [2022-12-13 21:03:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:03:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:03:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2022-12-13 21:03:12,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45265151515151514 [2022-12-13 21:03:12,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2022-12-13 21:03:12,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2022-12-13 21:03:12,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:12,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2022-12-13 21:03:12,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,822 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 423 flow. Second operand 4 states and 717 transitions. [2022-12-13 21:03:12,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 661 flow [2022-12-13 21:03:12,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 627 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-12-13 21:03:12,827 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 275 flow [2022-12-13 21:03:12,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2022-12-13 21:03:12,827 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2022-12-13 21:03:12,827 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 275 flow [2022-12-13 21:03:12,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:12,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:12,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:12,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:03:12,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1161854968, now seen corresponding path program 1 times [2022-12-13 21:03:12,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:12,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328430327] [2022-12-13 21:03:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:12,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:12,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:12,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328430327] [2022-12-13 21:03:12,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328430327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:12,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:12,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:03:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859046374] [2022-12-13 21:03:12,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:12,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:03:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:03:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:03:13,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2022-12-13 21:03:13,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 165.85714285714286) internal successors, (1161), 7 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:13,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2022-12-13 21:03:13,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:13,232 INFO L130 PetriNetUnfolder]: 54/183 cut-off events. [2022-12-13 21:03:13,233 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-12-13 21:03:13,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 183 events. 54/183 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 701 event pairs, 7 based on Foata normal form. 10/192 useless extension candidates. Maximal degree in co-relation 643. Up to 49 conditions per place. [2022-12-13 21:03:13,234 INFO L137 encePairwiseOnDemand]: 388/396 looper letters, 46 selfloop transitions, 13 changer transitions 2/70 dead transitions. [2022-12-13 21:03:13,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 532 flow [2022-12-13 21:03:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:03:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 21:03:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2348 transitions. [2022-12-13 21:03:13,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4235209235209235 [2022-12-13 21:03:13,240 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2348 transitions. [2022-12-13 21:03:13,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2348 transitions. [2022-12-13 21:03:13,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:13,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2348 transitions. [2022-12-13 21:03:13,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 167.71428571428572) internal successors, (2348), 14 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 396.0) internal successors, (5940), 15 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,255 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 396.0) internal successors, (5940), 15 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,255 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 275 flow. Second operand 14 states and 2348 transitions. [2022-12-13 21:03:13,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 532 flow [2022-12-13 21:03:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 508 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:03:13,258 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 285 flow [2022-12-13 21:03:13,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=285, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2022-12-13 21:03:13,259 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2022-12-13 21:03:13,259 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 285 flow [2022-12-13 21:03:13,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.85714285714286) internal successors, (1161), 7 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:13,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:13,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:03:13,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash -148764633, now seen corresponding path program 1 times [2022-12-13 21:03:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:13,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401889737] [2022-12-13 21:03:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:13,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:13,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:13,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401889737] [2022-12-13 21:03:13,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401889737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:13,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:13,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:03:13,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286679932] [2022-12-13 21:03:13,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:13,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:03:13,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:13,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:03:13,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:03:13,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 396 [2022-12-13 21:03:13,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:13,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 396 [2022-12-13 21:03:13,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:13,461 INFO L130 PetriNetUnfolder]: 53/184 cut-off events. [2022-12-13 21:03:13,461 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2022-12-13 21:03:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 184 events. 53/184 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 688 event pairs, 32 based on Foata normal form. 4/186 useless extension candidates. Maximal degree in co-relation 681. Up to 96 conditions per place. [2022-12-13 21:03:13,462 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 31 selfloop transitions, 10 changer transitions 10/57 dead transitions. [2022-12-13 21:03:13,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 57 transitions, 449 flow [2022-12-13 21:03:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:03:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:03:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 714 transitions. [2022-12-13 21:03:13,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2022-12-13 21:03:13,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 714 transitions. [2022-12-13 21:03:13,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 714 transitions. [2022-12-13 21:03:13,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:13,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 714 transitions. [2022-12-13 21:03:13,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,466 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,466 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 285 flow. Second operand 4 states and 714 transitions. [2022-12-13 21:03:13,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 57 transitions, 449 flow [2022-12-13 21:03:13,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 421 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-12-13 21:03:13,468 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 258 flow [2022-12-13 21:03:13,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2022-12-13 21:03:13,468 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-12-13 21:03:13,468 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 258 flow [2022-12-13 21:03:13,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:03:13,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:13,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:03:13,469 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-12-13 21:03:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1229223604, now seen corresponding path program 1 times [2022-12-13 21:03:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:13,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732300321] [2022-12-13 21:03:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:13,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732300321] [2022-12-13 21:03:13,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732300321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:13,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:13,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:03:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524110633] [2022-12-13 21:03:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:03:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:03:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:03:13,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 396 [2022-12-13 21:03:13,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 41 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:03:13,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 396 [2022-12-13 21:03:13,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:03:13,762 INFO L130 PetriNetUnfolder]: 22/95 cut-off events. [2022-12-13 21:03:13,762 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-12-13 21:03:13,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 95 events. 22/95 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 279 event pairs, 4 based on Foata normal form. 15/110 useless extension candidates. Maximal degree in co-relation 345. Up to 78 conditions per place. [2022-12-13 21:03:13,762 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2022-12-13 21:03:13,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 325 flow [2022-12-13 21:03:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:03:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:03:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 692 transitions. [2022-12-13 21:03:13,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2022-12-13 21:03:13,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 692 transitions. [2022-12-13 21:03:13,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 692 transitions. [2022-12-13 21:03:13,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:13,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 692 transitions. [2022-12-13 21:03:13,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,767 INFO L175 Difference]: Start difference. First operand has 68 places, 41 transitions, 258 flow. Second operand 4 states and 692 transitions. [2022-12-13 21:03:13,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 325 flow [2022-12-13 21:03:13,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 282 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 21:03:13,768 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2022-12-13 21:03:13,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2022-12-13 21:03:13,768 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2022-12-13 21:03:13,768 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2022-12-13 21:03:13,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:13,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2022-12-13 21:03:13,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-12-13 21:03:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:03:13,771 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:13,775 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:03:13,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:03:13,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:03:13 BasicIcfg [2022-12-13 21:03:13,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:03:13,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:03:13,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:03:13,778 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:03:13,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:05" (3/4) ... [2022-12-13 21:03:13,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:03:13,785 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 21:03:13,788 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 21:03:13,788 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 21:03:13,788 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 21:03:13,788 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:03:13,811 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:03:13,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:03:13,811 INFO L158 Benchmark]: Toolchain (without parser) took 9449.54ms. Allocated memory was 119.5MB in the beginning and 176.2MB in the end (delta: 56.6MB). Free memory was 81.3MB in the beginning and 86.8MB in the end (delta: -5.5MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2022-12-13 21:03:13,812 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:13,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.00ms. Allocated memory is still 119.5MB. Free memory was 81.0MB in the beginning and 61.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 21:03:13,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.00ms. Allocated memory is still 119.5MB. Free memory was 61.0MB in the beginning and 58.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:03:13,812 INFO L158 Benchmark]: Boogie Preprocessor took 18.44ms. Allocated memory is still 119.5MB. Free memory was 58.6MB in the beginning and 56.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:13,812 INFO L158 Benchmark]: RCFGBuilder took 420.57ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 56.9MB in the beginning and 109.9MB in the end (delta: -53.1MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-12-13 21:03:13,813 INFO L158 Benchmark]: TraceAbstraction took 8642.81ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 109.5MB in the beginning and 90.0MB in the end (delta: 19.5MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-12-13 21:03:13,813 INFO L158 Benchmark]: Witness Printer took 33.02ms. Allocated memory is still 176.2MB. Free memory was 90.0MB in the beginning and 86.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:03:13,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.00ms. Allocated memory is still 119.5MB. Free memory was 81.0MB in the beginning and 61.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.00ms. Allocated memory is still 119.5MB. Free memory was 61.0MB in the beginning and 58.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.44ms. Allocated memory is still 119.5MB. Free memory was 58.6MB in the beginning and 56.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 420.57ms. Allocated memory was 119.5MB in the beginning and 146.8MB in the end (delta: 27.3MB). Free memory was 56.9MB in the beginning and 109.9MB in the end (delta: -53.1MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8642.81ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 109.5MB in the beginning and 90.0MB in the end (delta: 19.5MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * Witness Printer took 33.02ms. Allocated memory is still 176.2MB. Free memory was 90.0MB in the beginning and 86.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 183 PlacesBefore, 38 PlacesAfterwards, 188 TransitionsBefore, 38 TransitionsAfterwards, 9240 CoEnabledTransitionPairs, 7 FixpointIterations, 54 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 33 ConcurrentYvCompositions, 5 ChoiceCompositions, 207 TotalNumberOfCompositions, 14872 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8860, independent: 8565, independent conditional: 0, independent unconditional: 8565, dependent: 295, dependent conditional: 0, dependent unconditional: 295, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5259, independent: 5196, independent conditional: 0, independent unconditional: 5196, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8860, independent: 3369, independent conditional: 0, independent unconditional: 3369, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 5259, unknown conditional: 0, unknown unconditional: 5259] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 730]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: 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, 261 locations, 10 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: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1366 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1021 mSDsluCounter, 372 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 335 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2128 IncrementalHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 37 mSDtfsCounter, 2128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=423occurred in iteration=10, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:03:13,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9c9a8b-cb27-46a0-9e88-06b4db5c464d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE