./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/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_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/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_b5850939-6e72-4e50-9792-c10908ff0c1f/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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- 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 20:18:59,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:18:59,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:18:59,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:18:59,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:18:59,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:18:59,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:18:59,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:18:59,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:18:59,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:18:59,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:18:59,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:18:59,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:18:59,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:18:59,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:18:59,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:18:59,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:18:59,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:18:59,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:18:59,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:18:59,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:18:59,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:18:59,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:18:59,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:18:59,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:18:59,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:18:59,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:18:59,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:18:59,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:18:59,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:18:59,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:18:59,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:18:59,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:18:59,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:18:59,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:18:59,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:18:59,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:18:59,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:18:59,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:18:59,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:18:59,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:18:59,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 20:18:59,497 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:18:59,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:18:59,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:18:59,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:18:59,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:18:59,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:18:59,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:18:59,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:18:59,500 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:18:59,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:18:59,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:18:59,506 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:18:59,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:18:59,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:18:59,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:18:59,507 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:18:59,507 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:18:59,507 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:18:59,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:18:59,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:18:59,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:18:59,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:18:59,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:18:59,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:18:59,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:18:59,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:18:59,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:18:59,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:18:59,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:18:59,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:18:59,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:18:59,510 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:18:59,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:18:59,510 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:18:59,511 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_b5850939-6e72-4e50-9792-c10908ff0c1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2022-12-13 20:18:59,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:18:59,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:18:59,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:18:59,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:18:59,696 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:18:59,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-13 20:19:02,251 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:19:02,478 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:19:02,478 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-13 20:19:02,489 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data/67879ce22/904aec52a05f4232a863c9500421efa8/FLAGe4e1893e6 [2022-12-13 20:19:02,834 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data/67879ce22/904aec52a05f4232a863c9500421efa8 [2022-12-13 20:19:02,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:19:02,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:19:02,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:19:02,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:19:02,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:19:02,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:19:02" (1/1) ... [2022-12-13 20:19:02,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67927c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:02, skipping insertion in model container [2022-12-13 20:19:02,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:19:02" (1/1) ... [2022-12-13 20:19:02,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:19:02,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:19:03,099 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-13 20:19:03,106 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-13 20:19:03,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:19:03,119 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:19:03,143 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-13 20:19:03,145 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-13 20:19:03,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:19:03,170 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:19:03,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03 WrapperNode [2022-12-13 20:19:03,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:19:03,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:19:03,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:19:03,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:19:03,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,203 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2022-12-13 20:19:03,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:19:03,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:19:03,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:19:03,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:19:03,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:19:03,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:19:03,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:19:03,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:19:03,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (1/1) ... [2022-12-13 20:19:03,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:19:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:03,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:19:03,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:19:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:19:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 20:19:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 20:19:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 20:19:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 20:19:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:19:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:19:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:19:03,287 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 20:19:03,389 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:19:03,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:19:03,636 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:19:03,644 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:19:03,644 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:19:03,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:03 BoogieIcfgContainer [2022-12-13 20:19:03,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:19:03,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:19:03,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:19:03,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:19:03,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:19:02" (1/3) ... [2022-12-13 20:19:03,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b154470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:19:03, skipping insertion in model container [2022-12-13 20:19:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:03" (2/3) ... [2022-12-13 20:19:03,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b154470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:19:03, skipping insertion in model container [2022-12-13 20:19:03,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:03" (3/3) ... [2022-12-13 20:19:03,655 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-12-13 20:19:03,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:19:03,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-13 20:19:03,670 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:19:03,739 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:19:03,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 166 transitions, 348 flow [2022-12-13 20:19:03,805 INFO L130 PetriNetUnfolder]: 10/164 cut-off events. [2022-12-13 20:19:03,805 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:19:03,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 10/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 326 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-12-13 20:19:03,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 166 transitions, 348 flow [2022-12-13 20:19:03,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 159 transitions, 330 flow [2022-12-13 20:19:03,817 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:19:03,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 159 transitions, 330 flow [2022-12-13 20:19:03,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 159 transitions, 330 flow [2022-12-13 20:19:03,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 159 transitions, 330 flow [2022-12-13 20:19:03,852 INFO L130 PetriNetUnfolder]: 10/159 cut-off events. [2022-12-13 20:19:03,852 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:19:03,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 10/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 323 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-12-13 20:19:03,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 5240 [2022-12-13 20:19:09,631 INFO L134 LiptonReduction]: Checked pairs total: 11848 [2022-12-13 20:19:09,631 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-13 20:19:09,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:19:09,646 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;@73abc4b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:19:09,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 20:19:09,648 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 20:19:09,648 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:19:09,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:09,649 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:19:09,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:09,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:09,652 INFO L85 PathProgramCache]: Analyzing trace with hash 649, now seen corresponding path program 1 times [2022-12-13 20:19:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:09,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303630230] [2022-12-13 20:19:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:09,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:09,743 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 20:19:09,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:09,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303630230] [2022-12-13 20:19:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303630230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:09,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:09,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:19:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112188851] [2022-12-13 20:19:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:19:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:19:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:19:09,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 322 [2022-12-13 20:19:09,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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 20:19:09,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:09,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 322 [2022-12-13 20:19:09,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:09,969 INFO L130 PetriNetUnfolder]: 1181/1913 cut-off events. [2022-12-13 20:19:09,969 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-13 20:19:09,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 1913 events. 1181/1913 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9413 event pairs, 917 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 3481. Up to 1753 conditions per place. [2022-12-13 20:19:09,979 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 40 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2022-12-13 20:19:09,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 182 flow [2022-12-13 20:19:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:19:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:19:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 355 transitions. [2022-12-13 20:19:09,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5512422360248447 [2022-12-13 20:19:09,990 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 355 transitions. [2022-12-13 20:19:09,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 355 transitions. [2022-12-13 20:19:09,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:09,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 355 transitions. [2022-12-13 20:19:09,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 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 20:19:10,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 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 20:19:10,000 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 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 20:19:10,001 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 110 flow. Second operand 2 states and 355 transitions. [2022-12-13 20:19:10,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 182 flow [2022-12-13 20:19:10,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 20:19:10,005 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 94 flow [2022-12-13 20:19:10,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-12-13 20:19:10,009 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2022-12-13 20:19:10,009 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 94 flow [2022-12-13 20:19:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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 20:19:10,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:10,010 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:19:10,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:19:10,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash 639476, now seen corresponding path program 1 times [2022-12-13 20:19:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:10,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079321099] [2022-12-13 20:19:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:10,178 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 20:19:10,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:10,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079321099] [2022-12-13 20:19:10,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079321099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:10,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:10,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942048605] [2022-12-13 20:19:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:10,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 322 [2022-12-13 20:19:10,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 20:19:10,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:10,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 322 [2022-12-13 20:19:10,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:10,416 INFO L130 PetriNetUnfolder]: 1154/1860 cut-off events. [2022-12-13 20:19:10,416 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 20:19:10,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 1860 events. 1154/1860 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9078 event pairs, 896 based on Foata normal form. 0/1023 useless extension candidates. Maximal degree in co-relation 3576. Up to 1702 conditions per place. [2022-12-13 20:19:10,427 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 36 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-12-13 20:19:10,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 166 flow [2022-12-13 20:19:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2022-12-13 20:19:10,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.510351966873706 [2022-12-13 20:19:10,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2022-12-13 20:19:10,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2022-12-13 20:19:10,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:10,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2022-12-13 20:19:10,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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 20:19:10,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:10,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:10,436 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 94 flow. Second operand 3 states and 493 transitions. [2022-12-13 20:19:10,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 166 flow [2022-12-13 20:19:10,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:19:10,437 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 94 flow [2022-12-13 20:19:10,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2022-12-13 20:19:10,438 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2022-12-13 20:19:10,438 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 94 flow [2022-12-13 20:19:10,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 20:19:10,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:10,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:19:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:19:10,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash 639475, now seen corresponding path program 1 times [2022-12-13 20:19:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:10,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270886413] [2022-12-13 20:19:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:10,508 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 20:19:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270886413] [2022-12-13 20:19:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270886413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:10,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:10,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984979111] [2022-12-13 20:19:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:10,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 322 [2022-12-13 20:19:10,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 20:19:10,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:10,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 322 [2022-12-13 20:19:10,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:10,716 INFO L130 PetriNetUnfolder]: 1127/1807 cut-off events. [2022-12-13 20:19:10,716 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 20:19:10,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3480 conditions, 1807 events. 1127/1807 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8719 event pairs, 875 based on Foata normal form. 0/1004 useless extension candidates. Maximal degree in co-relation 3476. Up to 1653 conditions per place. [2022-12-13 20:19:10,723 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 34 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-12-13 20:19:10,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 162 flow [2022-12-13 20:19:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2022-12-13 20:19:10,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49585921325051757 [2022-12-13 20:19:10,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2022-12-13 20:19:10,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2022-12-13 20:19:10,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:10,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2022-12-13 20:19:10,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:10,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:10,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:10,730 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 94 flow. Second operand 3 states and 479 transitions. [2022-12-13 20:19:10,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 162 flow [2022-12-13 20:19:10,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:10,731 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 90 flow [2022-12-13 20:19:10,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2022-12-13 20:19:10,732 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-12-13 20:19:10,732 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 90 flow [2022-12-13 20:19:10,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 20:19:10,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:10,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:19:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:19:10,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash 614532113, now seen corresponding path program 1 times [2022-12-13 20:19:10,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:10,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694912428] [2022-12-13 20:19:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:10,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:10,929 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 20:19:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:10,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694912428] [2022-12-13 20:19:10,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694912428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:10,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:10,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790296428] [2022-12-13 20:19:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:10,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:10,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:10,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:10,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 322 [2022-12-13 20:19:10,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:19:10,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:10,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 322 [2022-12-13 20:19:10,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:11,212 INFO L130 PetriNetUnfolder]: 1614/2594 cut-off events. [2022-12-13 20:19:11,212 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 20:19:11,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 2594 events. 1614/2594 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12349 event pairs, 569 based on Foata normal form. 0/1467 useless extension candidates. Maximal degree in co-relation 5006. Up to 1524 conditions per place. [2022-12-13 20:19:11,221 INFO L137 encePairwiseOnDemand]: 315/322 looper letters, 60 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2022-12-13 20:19:11,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 275 flow [2022-12-13 20:19:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-12-13 20:19:11,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5414078674948241 [2022-12-13 20:19:11,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-12-13 20:19:11,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-12-13 20:19:11,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:11,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-12-13 20:19:11,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 20:19:11,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,225 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 90 flow. Second operand 3 states and 523 transitions. [2022-12-13 20:19:11,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 275 flow [2022-12-13 20:19:11,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:11,227 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 111 flow [2022-12-13 20:19:11,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2022-12-13 20:19:11,227 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2022-12-13 20:19:11,227 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 111 flow [2022-12-13 20:19:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:19:11,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:11,228 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:19:11,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:19:11,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:11,228 INFO L85 PathProgramCache]: Analyzing trace with hash 614532114, now seen corresponding path program 1 times [2022-12-13 20:19:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98392878] [2022-12-13 20:19:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:11,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:11,299 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 20:19:11,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:11,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98392878] [2022-12-13 20:19:11,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98392878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:11,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:11,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:11,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135413172] [2022-12-13 20:19:11,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:11,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:11,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:11,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:11,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 20:19:11,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 20:19:11,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:11,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 20:19:11,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:11,504 INFO L130 PetriNetUnfolder]: 1452/2366 cut-off events. [2022-12-13 20:19:11,504 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-12-13 20:19:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4849 conditions, 2366 events. 1452/2366 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11401 event pairs, 1050 based on Foata normal form. 0/1525 useless extension candidates. Maximal degree in co-relation 4844. Up to 2119 conditions per place. [2022-12-13 20:19:11,511 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 34 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-12-13 20:19:11,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 177 flow [2022-12-13 20:19:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2022-12-13 20:19:11,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 20:19:11,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2022-12-13 20:19:11,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2022-12-13 20:19:11,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:11,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2022-12-13 20:19:11,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 20:19:11,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,515 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 111 flow. Second operand 3 states and 483 transitions. [2022-12-13 20:19:11,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 177 flow [2022-12-13 20:19:11,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:19:11,516 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 106 flow [2022-12-13 20:19:11,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2022-12-13 20:19:11,517 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-12-13 20:19:11,517 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 106 flow [2022-12-13 20:19:11,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 20:19:11,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:11,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:19:11,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:19:11,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash 614549352, now seen corresponding path program 1 times [2022-12-13 20:19:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:11,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975355186] [2022-12-13 20:19:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:11,545 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 20:19:11,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:11,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975355186] [2022-12-13 20:19:11,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975355186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:11,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:11,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:11,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405936353] [2022-12-13 20:19:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:11,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:11,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 20:19:11,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 20:19:11,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:11,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 20:19:11,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:11,726 INFO L130 PetriNetUnfolder]: 1071/1779 cut-off events. [2022-12-13 20:19:11,727 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-12-13 20:19:11,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 1779 events. 1071/1779 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8241 event pairs, 764 based on Foata normal form. 0/1221 useless extension candidates. Maximal degree in co-relation 3598. Up to 1589 conditions per place. [2022-12-13 20:19:11,735 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 33 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 20:19:11,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 174 flow [2022-12-13 20:19:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2022-12-13 20:19:11,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.494824016563147 [2022-12-13 20:19:11,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2022-12-13 20:19:11,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2022-12-13 20:19:11,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:11,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2022-12-13 20:19:11,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 20:19:11,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,741 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 106 flow. Second operand 3 states and 478 transitions. [2022-12-13 20:19:11,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 174 flow [2022-12-13 20:19:11,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:11,743 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 104 flow [2022-12-13 20:19:11,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 20:19:11,743 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2022-12-13 20:19:11,743 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 104 flow [2022-12-13 20:19:11,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 20:19:11,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:11,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:19:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:19:11,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 614549353, now seen corresponding path program 1 times [2022-12-13 20:19:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:11,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615771732] [2022-12-13 20:19:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:11,812 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 20:19:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:11,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615771732] [2022-12-13 20:19:11,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615771732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:11,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:11,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:19:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762924327] [2022-12-13 20:19:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:11,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:19:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:19:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:19:11,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 322 [2022-12-13 20:19:11,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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 20:19:11,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:11,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 322 [2022-12-13 20:19:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:11,977 INFO L130 PetriNetUnfolder]: 690/1192 cut-off events. [2022-12-13 20:19:11,977 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 20:19:11,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2422 conditions, 1192 events. 690/1192 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5243 event pairs, 478 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 2417. Up to 1059 conditions per place. [2022-12-13 20:19:11,980 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 32 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-12-13 20:19:11,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 170 flow [2022-12-13 20:19:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2022-12-13 20:19:11,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2022-12-13 20:19:11,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2022-12-13 20:19:11,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2022-12-13 20:19:11,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:11,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2022-12-13 20:19:11,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 20:19:11,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:11,985 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 104 flow. Second operand 3 states and 462 transitions. [2022-12-13 20:19:11,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 170 flow [2022-12-13 20:19:11,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:11,986 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 102 flow [2022-12-13 20:19:11,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2022-12-13 20:19:11,986 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -10 predicate places. [2022-12-13 20:19:11,986 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 102 flow [2022-12-13 20:19:11,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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 20:19:11,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:11,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:11,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:19:11,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2140128193, now seen corresponding path program 1 times [2022-12-13 20:19:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:11,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029261203] [2022-12-13 20:19:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:12,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:12,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538571332] [2022-12-13 20:19:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:12,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:12,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:12,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:12,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:19:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:19:12,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:12,141 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 20:19:12,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:19:12,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:12,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029261203] [2022-12-13 20:19:12,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:12,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538571332] [2022-12-13 20:19:12,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538571332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:12,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:12,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:19:12,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582799788] [2022-12-13 20:19:12,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:12,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:12,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:12,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 322 [2022-12-13 20:19:12,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 20:19:12,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:12,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 322 [2022-12-13 20:19:12,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:12,301 INFO L130 PetriNetUnfolder]: 636/1112 cut-off events. [2022-12-13 20:19:12,302 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 20:19:12,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 1112 events. 636/1112 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4860 event pairs, 452 based on Foata normal form. 0/885 useless extension candidates. Maximal degree in co-relation 2216. Up to 985 conditions per place. [2022-12-13 20:19:12,307 INFO L137 encePairwiseOnDemand]: 320/322 looper letters, 31 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-12-13 20:19:12,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 158 flow [2022-12-13 20:19:12,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-12-13 20:19:12,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5020703933747412 [2022-12-13 20:19:12,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-12-13 20:19:12,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-12-13 20:19:12,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:12,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-12-13 20:19:12,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 20:19:12,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:12,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:12,313 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 102 flow. Second operand 3 states and 485 transitions. [2022-12-13 20:19:12,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 158 flow [2022-12-13 20:19:12,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:12,315 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 92 flow [2022-12-13 20:19:12,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2022-12-13 20:19:12,315 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2022-12-13 20:19:12,316 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 92 flow [2022-12-13 20:19:12,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 20:19:12,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:12,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:12,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:19:12,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:12,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash -608969299, now seen corresponding path program 1 times [2022-12-13 20:19:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:12,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307702089] [2022-12-13 20:19:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:12,582 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 20:19:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:12,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307702089] [2022-12-13 20:19:12,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307702089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:12,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:12,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:19:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319254999] [2022-12-13 20:19:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:12,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 322 [2022-12-13 20:19:12,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 20:19:12,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:12,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 322 [2022-12-13 20:19:12,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:12,758 INFO L130 PetriNetUnfolder]: 904/1528 cut-off events. [2022-12-13 20:19:12,758 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 20:19:12,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 1528 events. 904/1528 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6758 event pairs, 326 based on Foata normal form. 38/1247 useless extension candidates. Maximal degree in co-relation 3148. Up to 977 conditions per place. [2022-12-13 20:19:12,763 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 53 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2022-12-13 20:19:12,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 259 flow [2022-12-13 20:19:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-12-13 20:19:12,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.525879917184265 [2022-12-13 20:19:12,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-12-13 20:19:12,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-12-13 20:19:12,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:12,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-12-13 20:19:12,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 20:19:12,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:12,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:12,770 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 92 flow. Second operand 3 states and 508 transitions. [2022-12-13 20:19:12,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 259 flow [2022-12-13 20:19:12,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:19:12,771 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2022-12-13 20:19:12,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2022-12-13 20:19:12,772 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2022-12-13 20:19:12,772 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2022-12-13 20:19:12,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 20:19:12,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:12,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:12,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:19:12,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1547330185, now seen corresponding path program 1 times [2022-12-13 20:19:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:12,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559606965] [2022-12-13 20:19:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:12,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:12,817 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 20:19:12,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:12,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559606965] [2022-12-13 20:19:12,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559606965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:12,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:12,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:19:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016450959] [2022-12-13 20:19:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:12,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:12,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 322 [2022-12-13 20:19:12,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 20:19:12,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:12,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 322 [2022-12-13 20:19:12,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:13,060 INFO L130 PetriNetUnfolder]: 1095/1882 cut-off events. [2022-12-13 20:19:13,061 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-12-13 20:19:13,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 1882 events. 1095/1882 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9324 event pairs, 438 based on Foata normal form. 0/1554 useless extension candidates. Maximal degree in co-relation 3964. Up to 1460 conditions per place. [2022-12-13 20:19:13,069 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 52 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-13 20:19:13,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 270 flow [2022-12-13 20:19:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2022-12-13 20:19:13,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2022-12-13 20:19:13,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2022-12-13 20:19:13,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2022-12-13 20:19:13,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:13,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2022-12-13 20:19:13,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 20:19:13,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:13,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:13,073 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 510 transitions. [2022-12-13 20:19:13,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 270 flow [2022-12-13 20:19:13,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:19:13,075 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 115 flow [2022-12-13 20:19:13,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2022-12-13 20:19:13,076 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2022-12-13 20:19:13,076 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 115 flow [2022-12-13 20:19:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 20:19:13,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:13,076 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:19:13,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash -399754966, now seen corresponding path program 1 times [2022-12-13 20:19:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:13,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012561698] [2022-12-13 20:19:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:13,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:13,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407947689] [2022-12-13 20:19:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:13,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:13,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:13,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:13,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:19:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:13,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:19:13,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:13,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:19:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:13,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012561698] [2022-12-13 20:19:13,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:13,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407947689] [2022-12-13 20:19:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407947689] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:19:13,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:19:13,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-12-13 20:19:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500536757] [2022-12-13 20:19:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:13,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:19:13,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 322 [2022-12-13 20:19:13,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:19:13,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:13,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 322 [2022-12-13 20:19:13,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:13,417 INFO L130 PetriNetUnfolder]: 883/1614 cut-off events. [2022-12-13 20:19:13,417 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2022-12-13 20:19:13,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1614 events. 883/1614 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8017 event pairs, 283 based on Foata normal form. 32/1478 useless extension candidates. Maximal degree in co-relation 3515. Up to 960 conditions per place. [2022-12-13 20:19:13,425 INFO L137 encePairwiseOnDemand]: 316/322 looper letters, 46 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2022-12-13 20:19:13,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 253 flow [2022-12-13 20:19:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-12-13 20:19:13,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165631469979296 [2022-12-13 20:19:13,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-12-13 20:19:13,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-12-13 20:19:13,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:13,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-12-13 20:19:13,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 20:19:13,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:13,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:13,431 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 115 flow. Second operand 3 states and 499 transitions. [2022-12-13 20:19:13,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 253 flow [2022-12-13 20:19:13,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:13,433 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 130 flow [2022-12-13 20:19:13,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 20:19:13,434 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2022-12-13 20:19:13,434 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 130 flow [2022-12-13 20:19:13,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:19:13,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:13,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:13,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:19:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:13,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1753107855, now seen corresponding path program 1 times [2022-12-13 20:19:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372646010] [2022-12-13 20:19:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:13,712 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 20:19:13,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:13,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372646010] [2022-12-13 20:19:13,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372646010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:13,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:13,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:19:13,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242779970] [2022-12-13 20:19:13,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:13,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:13,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:13,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:13,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:13,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 322 [2022-12-13 20:19:13,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 20:19:13,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:13,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 322 [2022-12-13 20:19:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:13,882 INFO L130 PetriNetUnfolder]: 845/1552 cut-off events. [2022-12-13 20:19:13,882 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2022-12-13 20:19:13,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3596 conditions, 1552 events. 845/1552 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7572 event pairs, 268 based on Foata normal form. 34/1514 useless extension candidates. Maximal degree in co-relation 3588. Up to 831 conditions per place. [2022-12-13 20:19:13,886 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 44 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2022-12-13 20:19:13,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 260 flow [2022-12-13 20:19:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-12-13 20:19:13,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134575569358178 [2022-12-13 20:19:13,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-12-13 20:19:13,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-12-13 20:19:13,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:13,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-12-13 20:19:13,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 20:19:13,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:13,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:13,890 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 130 flow. Second operand 3 states and 496 transitions. [2022-12-13 20:19:13,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 260 flow [2022-12-13 20:19:13,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:13,892 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 130 flow [2022-12-13 20:19:13,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 20:19:13,893 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2022-12-13 20:19:13,893 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 130 flow [2022-12-13 20:19:13,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 20:19:13,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:13,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:13,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:19:13,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:13,894 INFO L85 PathProgramCache]: Analyzing trace with hash -145165724, now seen corresponding path program 1 times [2022-12-13 20:19:13,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:13,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488061427] [2022-12-13 20:19:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:14,016 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 20:19:14,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:14,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488061427] [2022-12-13 20:19:14,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488061427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:14,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:14,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:19:14,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66395013] [2022-12-13 20:19:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:14,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:14,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:14,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 322 [2022-12-13 20:19:14,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 20:19:14,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:14,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 322 [2022-12-13 20:19:14,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:14,177 INFO L130 PetriNetUnfolder]: 494/959 cut-off events. [2022-12-13 20:19:14,177 INFO L131 PetriNetUnfolder]: For 209/213 co-relation queries the response was YES. [2022-12-13 20:19:14,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 959 events. 494/959 cut-off events. For 209/213 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4111 event pairs, 223 based on Foata normal form. 10/939 useless extension candidates. Maximal degree in co-relation 2283. Up to 562 conditions per place. [2022-12-13 20:19:14,181 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 51 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-12-13 20:19:14,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 293 flow [2022-12-13 20:19:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-12-13 20:19:14,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5175983436853002 [2022-12-13 20:19:14,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-12-13 20:19:14,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-12-13 20:19:14,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:14,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-12-13 20:19:14,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 20:19:14,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:14,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:14,186 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 130 flow. Second operand 3 states and 500 transitions. [2022-12-13 20:19:14,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 293 flow [2022-12-13 20:19:14,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 283 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 20:19:14,188 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 130 flow [2022-12-13 20:19:14,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2022-12-13 20:19:14,188 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2022-12-13 20:19:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 130 flow [2022-12-13 20:19:14,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 20:19:14,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:14,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:14,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:19:14,189 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 795166608, now seen corresponding path program 1 times [2022-12-13 20:19:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571834948] [2022-12-13 20:19:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:14,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:14,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918436755] [2022-12-13 20:19:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:14,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:14,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:14,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:14,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:19:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:14,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:19:14,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:14,418 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 20:19:14,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:19:14,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571834948] [2022-12-13 20:19:14,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918436755] [2022-12-13 20:19:14,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918436755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:14,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:14,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:19:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872345534] [2022-12-13 20:19:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:14,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:19:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:19:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:19:14,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 322 [2022-12-13 20:19:14,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 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 20:19:14,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:14,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 322 [2022-12-13 20:19:14,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:14,704 INFO L130 PetriNetUnfolder]: 739/1436 cut-off events. [2022-12-13 20:19:14,704 INFO L131 PetriNetUnfolder]: For 316/320 co-relation queries the response was YES. [2022-12-13 20:19:14,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 1436 events. 739/1436 cut-off events. For 316/320 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6743 event pairs, 295 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 3270. Up to 507 conditions per place. [2022-12-13 20:19:14,708 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 75 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2022-12-13 20:19:14,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 422 flow [2022-12-13 20:19:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:19:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:19:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2022-12-13 20:19:14,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5131987577639752 [2022-12-13 20:19:14,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2022-12-13 20:19:14,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2022-12-13 20:19:14,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:14,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2022-12-13 20:19:14,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 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 20:19:14,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 20:19:14,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 20:19:14,712 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 130 flow. Second operand 4 states and 661 transitions. [2022-12-13 20:19:14,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 422 flow [2022-12-13 20:19:14,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:14,714 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 140 flow [2022-12-13 20:19:14,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2022-12-13 20:19:14,714 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2022-12-13 20:19:14,715 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 140 flow [2022-12-13 20:19:14,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 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 20:19:14,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:14,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:14,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:19:14,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:14,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2000431261, now seen corresponding path program 1 times [2022-12-13 20:19:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:14,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378516468] [2022-12-13 20:19:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:14,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:14,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378516468] [2022-12-13 20:19:14,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378516468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:14,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:14,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:19:14,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199615712] [2022-12-13 20:19:14,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:14,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 322 [2022-12-13 20:19:14,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 20:19:14,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:14,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 322 [2022-12-13 20:19:14,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:15,161 INFO L130 PetriNetUnfolder]: 1034/2007 cut-off events. [2022-12-13 20:19:15,161 INFO L131 PetriNetUnfolder]: For 522/536 co-relation queries the response was YES. [2022-12-13 20:19:15,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 2007 events. 1034/2007 cut-off events. For 522/536 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10726 event pairs, 489 based on Foata normal form. 44/2003 useless extension candidates. Maximal degree in co-relation 4602. Up to 1293 conditions per place. [2022-12-13 20:19:15,166 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 58 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-12-13 20:19:15,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 351 flow [2022-12-13 20:19:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2022-12-13 20:19:15,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2022-12-13 20:19:15,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2022-12-13 20:19:15,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2022-12-13 20:19:15,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:15,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2022-12-13 20:19:15,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 20:19:15,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:15,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 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 20:19:15,172 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 140 flow. Second operand 3 states and 510 transitions. [2022-12-13 20:19:15,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 351 flow [2022-12-13 20:19:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:15,174 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 148 flow [2022-12-13 20:19:15,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2022-12-13 20:19:15,174 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2022-12-13 20:19:15,174 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 148 flow [2022-12-13 20:19:15,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 20:19:15,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:15,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:19:15,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1017422113, now seen corresponding path program 1 times [2022-12-13 20:19:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:15,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505109033] [2022-12-13 20:19:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:15,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:15,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918429366] [2022-12-13 20:19:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:15,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:15,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:15,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:19:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:15,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:19:15,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:15,600 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 20:19:15,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:19:15,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505109033] [2022-12-13 20:19:15,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:15,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918429366] [2022-12-13 20:19:15,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918429366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:15,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:15,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:19:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132493950] [2022-12-13 20:19:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:15,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:19:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:19:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:19:15,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 322 [2022-12-13 20:19:15,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 20:19:15,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:15,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 322 [2022-12-13 20:19:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:15,824 INFO L130 PetriNetUnfolder]: 793/1562 cut-off events. [2022-12-13 20:19:15,824 INFO L131 PetriNetUnfolder]: For 676/680 co-relation queries the response was YES. [2022-12-13 20:19:15,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3963 conditions, 1562 events. 793/1562 cut-off events. For 676/680 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7554 event pairs, 279 based on Foata normal form. 20/1548 useless extension candidates. Maximal degree in co-relation 3951. Up to 629 conditions per place. [2022-12-13 20:19:15,828 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 69 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-12-13 20:19:15,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 414 flow [2022-12-13 20:19:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:19:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:19:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2022-12-13 20:19:15,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5007763975155279 [2022-12-13 20:19:15,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2022-12-13 20:19:15,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2022-12-13 20:19:15,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:15,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2022-12-13 20:19:15,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 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 20:19:15,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 20:19:15,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 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 20:19:15,832 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 148 flow. Second operand 4 states and 645 transitions. [2022-12-13 20:19:15,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 414 flow [2022-12-13 20:19:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:19:15,834 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 156 flow [2022-12-13 20:19:15,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2022-12-13 20:19:15,835 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2022-12-13 20:19:15,835 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 156 flow [2022-12-13 20:19:15,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 20:19:15,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:15,835 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 20:19:15,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:19:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 20:19:16,036 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -349078916, now seen corresponding path program 1 times [2022-12-13 20:19:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:16,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488567654] [2022-12-13 20:19:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:16,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438042208] [2022-12-13 20:19:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:16,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:16,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:16,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:16,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:19:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:16,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 20:19:16,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:16,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:19:16,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-12-13 20:19:16,394 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 20:19:16,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 20:19:16,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-13 20:19:16,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-13 20:19:16,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-12-13 20:19:16,717 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 20:19:16,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:19:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:16,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488567654] [2022-12-13 20:19:16,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:16,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438042208] [2022-12-13 20:19:16,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438042208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:16,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:16,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:19:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888122250] [2022-12-13 20:19:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:16,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:19:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:16,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:19:16,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:19:17,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 322 [2022-12-13 20:19:17,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 137.77777777777777) internal successors, (1240), 9 states have internal predecessors, (1240), 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 20:19:17,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:17,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 322 [2022-12-13 20:19:17,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:17,734 INFO L130 PetriNetUnfolder]: 1233/2416 cut-off events. [2022-12-13 20:19:17,734 INFO L131 PetriNetUnfolder]: For 1167/1181 co-relation queries the response was YES. [2022-12-13 20:19:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6137 conditions, 2416 events. 1233/2416 cut-off events. For 1167/1181 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13471 event pairs, 404 based on Foata normal form. 20/2382 useless extension candidates. Maximal degree in co-relation 6124. Up to 950 conditions per place. [2022-12-13 20:19:17,745 INFO L137 encePairwiseOnDemand]: 310/322 looper letters, 112 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2022-12-13 20:19:17,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 142 transitions, 792 flow [2022-12-13 20:19:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 20:19:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 20:19:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1627 transitions. [2022-12-13 20:19:17,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4593450028232637 [2022-12-13 20:19:17,749 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1627 transitions. [2022-12-13 20:19:17,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1627 transitions. [2022-12-13 20:19:17,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:17,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1627 transitions. [2022-12-13 20:19:17,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.9090909090909) internal successors, (1627), 11 states have internal predecessors, (1627), 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 20:19:17,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 322.0) internal successors, (3864), 12 states have internal predecessors, (3864), 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 20:19:17,759 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 322.0) internal successors, (3864), 12 states have internal predecessors, (3864), 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 20:19:17,759 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 156 flow. Second operand 11 states and 1627 transitions. [2022-12-13 20:19:17,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 142 transitions, 792 flow [2022-12-13 20:19:17,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 142 transitions, 774 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:19:17,763 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 341 flow [2022-12-13 20:19:17,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=341, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2022-12-13 20:19:17,764 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2022-12-13 20:19:17,764 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 341 flow [2022-12-13 20:19:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 137.77777777777777) internal successors, (1240), 9 states have internal predecessors, (1240), 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 20:19:17,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:17,765 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 20:19:17,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:19:17,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 20:19:17,966 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1575003510, now seen corresponding path program 2 times [2022-12-13 20:19:17,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:17,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779286050] [2022-12-13 20:19:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:17,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890132885] [2022-12-13 20:19:17,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:19:17,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:17,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:17,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:17,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:19:18,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:19:18,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:19:18,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 20:19:18,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:19:18,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2022-12-13 20:19:18,109 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 20:19:18,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 20:19:18,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-13 20:19:18,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-13 20:19:18,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-12-13 20:19:18,373 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 20:19:18,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:19:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779286050] [2022-12-13 20:19:18,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:18,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890132885] [2022-12-13 20:19:18,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890132885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:18,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:18,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:19:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462972715] [2022-12-13 20:19:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:19:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:19:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:19:18,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 322 [2022-12-13 20:19:18,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 341 flow. Second operand has 9 states, 9 states have (on average 137.77777777777777) internal successors, (1240), 9 states have internal predecessors, (1240), 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 20:19:18,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:18,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 322 [2022-12-13 20:19:18,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:19,474 INFO L130 PetriNetUnfolder]: 1747/3379 cut-off events. [2022-12-13 20:19:19,474 INFO L131 PetriNetUnfolder]: For 2933/2986 co-relation queries the response was YES. [2022-12-13 20:19:19,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9397 conditions, 3379 events. 1747/3379 cut-off events. For 2933/2986 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 18894 event pairs, 500 based on Foata normal form. 45/3393 useless extension candidates. Maximal degree in co-relation 9378. Up to 955 conditions per place. [2022-12-13 20:19:19,486 INFO L137 encePairwiseOnDemand]: 310/322 looper letters, 131 selfloop transitions, 47 changer transitions 0/183 dead transitions. [2022-12-13 20:19:19,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 183 transitions, 1198 flow [2022-12-13 20:19:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 20:19:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 20:19:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2061 transitions. [2022-12-13 20:19:19,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45718722271517304 [2022-12-13 20:19:19,489 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2061 transitions. [2022-12-13 20:19:19,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2061 transitions. [2022-12-13 20:19:19,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:19,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2061 transitions. [2022-12-13 20:19:19,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 147.21428571428572) internal successors, (2061), 14 states have internal predecessors, (2061), 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 20:19:19,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 322.0) internal successors, (4830), 15 states have internal predecessors, (4830), 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 20:19:19,496 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 322.0) internal successors, (4830), 15 states have internal predecessors, (4830), 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 20:19:19,496 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 341 flow. Second operand 14 states and 2061 transitions. [2022-12-13 20:19:19,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 183 transitions, 1198 flow [2022-12-13 20:19:19,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 183 transitions, 1196 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 20:19:19,505 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 649 flow [2022-12-13 20:19:19,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=649, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2022-12-13 20:19:19,506 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 34 predicate places. [2022-12-13 20:19:19,506 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 649 flow [2022-12-13 20:19:19,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 137.77777777777777) internal successors, (1240), 9 states have internal predecessors, (1240), 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 20:19:19,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:19,507 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] [2022-12-13 20:19:19,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:19:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 20:19:19,708 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1810557801, now seen corresponding path program 1 times [2022-12-13 20:19:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:19,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978177145] [2022-12-13 20:19:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978177145] [2022-12-13 20:19:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978177145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:19:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842347002] [2022-12-13 20:19:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:19,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:19,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:19,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:19:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:19,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:19:19,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:19:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:19,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:19:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:19,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842347002] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:19:19,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:19:19,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 20:19:19,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638539407] [2022-12-13 20:19:19,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:19:19,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:19:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:19:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:19:19,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 322 [2022-12-13 20:19:19,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 649 flow. Second operand has 7 states, 7 states have (on average 155.57142857142858) internal successors, (1089), 7 states have internal predecessors, (1089), 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 20:19:19,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:19,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 322 [2022-12-13 20:19:19,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:20,604 INFO L130 PetriNetUnfolder]: 3407/6614 cut-off events. [2022-12-13 20:19:20,604 INFO L131 PetriNetUnfolder]: For 10378/10496 co-relation queries the response was YES. [2022-12-13 20:19:20,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19923 conditions, 6614 events. 3407/6614 cut-off events. For 10378/10496 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42972 event pairs, 583 based on Foata normal form. 584/7128 useless extension candidates. Maximal degree in co-relation 19898. Up to 1641 conditions per place. [2022-12-13 20:19:20,628 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 197 selfloop transitions, 14 changer transitions 0/216 dead transitions. [2022-12-13 20:19:20,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 216 transitions, 1951 flow [2022-12-13 20:19:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:19:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:19:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1020 transitions. [2022-12-13 20:19:20,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2022-12-13 20:19:20,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1020 transitions. [2022-12-13 20:19:20,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1020 transitions. [2022-12-13 20:19:20,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:20,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1020 transitions. [2022-12-13 20:19:20,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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 20:19:20,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 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 20:19:20,646 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 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 20:19:20,646 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 649 flow. Second operand 6 states and 1020 transitions. [2022-12-13 20:19:20,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 216 transitions, 1951 flow [2022-12-13 20:19:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 216 transitions, 1864 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:20,670 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 667 flow [2022-12-13 20:19:20,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=667, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2022-12-13 20:19:20,670 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 41 predicate places. [2022-12-13 20:19:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 667 flow [2022-12-13 20:19:20,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 155.57142857142858) internal successors, (1089), 7 states have internal predecessors, (1089), 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 20:19:20,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:20,671 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:20,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:19:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:20,872 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:19:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash 856629454, now seen corresponding path program 1 times [2022-12-13 20:19:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:20,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207905352] [2022-12-13 20:19:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:20,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:19:20,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198207938] [2022-12-13 20:19:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:20,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:20,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:20,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:19:20,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:19:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:19:21,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:19:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:19:21,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:19:21,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:19:21,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-12-13 20:19:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (13 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-12-13 20:19:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining) [2022-12-13 20:19:21,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 20:19:21,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:19:21,623 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:21,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:19:21,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:19:21,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:19:21 BasicIcfg [2022-12-13 20:19:21,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:19:21,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:19:21,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:19:21,654 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:19:21,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:03" (3/4) ... [2022-12-13 20:19:21,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:19:21,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:19:21,657 INFO L158 Benchmark]: Toolchain (without parser) took 18819.42ms. Allocated memory was 132.1MB in the beginning and 232.8MB in the end (delta: 100.7MB). Free memory was 97.0MB in the beginning and 119.0MB in the end (delta: -22.0MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2022-12-13 20:19:21,657 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:19:21,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.74ms. Allocated memory is still 132.1MB. Free memory was 96.6MB in the beginning and 76.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 20:19:21,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.35ms. Allocated memory is still 132.1MB. Free memory was 76.5MB in the beginning and 73.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:19:21,658 INFO L158 Benchmark]: Boogie Preprocessor took 21.31ms. Allocated memory is still 132.1MB. Free memory was 73.9MB in the beginning and 72.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:19:21,658 INFO L158 Benchmark]: RCFGBuilder took 420.98ms. Allocated memory is still 132.1MB. Free memory was 72.2MB in the beginning and 52.9MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 20:19:21,658 INFO L158 Benchmark]: TraceAbstraction took 18004.67ms. Allocated memory was 132.1MB in the beginning and 232.8MB in the end (delta: 100.7MB). Free memory was 52.1MB in the beginning and 120.0MB in the end (delta: -67.9MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-12-13 20:19:21,658 INFO L158 Benchmark]: Witness Printer took 2.71ms. Allocated memory is still 232.8MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:19:21,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.74ms. Allocated memory is still 132.1MB. Free memory was 96.6MB in the beginning and 76.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.35ms. Allocated memory is still 132.1MB. Free memory was 76.5MB in the beginning and 73.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.31ms. Allocated memory is still 132.1MB. Free memory was 73.9MB in the beginning and 72.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 420.98ms. Allocated memory is still 132.1MB. Free memory was 72.2MB in the beginning and 52.9MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18004.67ms. Allocated memory was 132.1MB in the beginning and 232.8MB in the end (delta: 100.7MB). Free memory was 52.1MB in the beginning and 120.0MB in the end (delta: -67.9MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 2.71ms. Allocated memory is still 232.8MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 156 PlacesBefore, 49 PlacesAfterwards, 159 TransitionsBefore, 49 TransitionsAfterwards, 5240 CoEnabledTransitionPairs, 6 FixpointIterations, 63 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 156 TotalNumberOfCompositions, 11848 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7196, independent: 6919, independent conditional: 0, independent unconditional: 6919, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2918, independent: 2876, independent conditional: 0, independent unconditional: 2876, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7196, independent: 4043, independent conditional: 0, independent unconditional: 4043, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 2918, unknown conditional: 0, unknown unconditional: 2918] , Statistics on independence cache: Total cache size (in pairs): 356, Positive cache size: 333, Positive conditional cache size: 0, Positive unconditional cache size: 333, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 746]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 746. Possible FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={6:0}, id2={5:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 233 locations, 23 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: 17.9s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2134 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1543 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 410 mSDsCounter, 175 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3487 IncrementalHoareTripleChecker+Invalid, 3662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 175 mSolverCounterUnsat, 70 mSDtfsCounter, 3487 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred in iteration=19, InterpolantAutomatonStates: 80, 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: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 238 ConstructedInterpolants, 18 QuantifiedInterpolants, 1718 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1545 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 6/11 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 20:19:21,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/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_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- 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 20:19:23,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:19:23,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:19:23,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:19:23,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:19:23,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:19:23,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:19:23,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:19:23,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:19:23,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:19:23,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:19:23,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:19:23,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:19:23,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:19:23,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:19:23,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:19:23,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:19:23,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:19:23,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:19:23,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:19:23,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:19:23,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:19:23,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:19:23,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:19:23,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:19:23,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:19:23,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:19:23,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:19:23,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:19:23,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:19:23,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:19:23,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:19:23,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:19:23,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:19:23,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:19:23,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:19:23,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:19:23,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:19:23,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:19:23,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:19:23,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:19:23,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 20:19:23,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:19:23,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:19:23,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:19:23,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:19:23,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:19:23,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:19:23,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:19:23,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:19:23,324 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:19:23,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:19:23,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:19:23,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:19:23,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:19:23,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:19:23,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:19:23,325 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:19:23,325 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:19:23,326 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:19:23,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:19:23,326 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:19:23,326 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 20:19:23,326 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 20:19:23,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:19:23,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:19:23,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:19:23,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:19:23,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:19:23,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:19:23,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:19:23,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:19:23,328 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 20:19:23,328 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 20:19:23,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:19:23,329 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:19:23,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:19:23,329 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 20:19:23,329 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:19:23,329 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2022-12-13 20:19:23,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:19:23,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:19:23,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:19:23,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:19:23,561 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:19:23,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-13 20:19:26,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:19:26,338 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:19:26,339 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2022-12-13 20:19:26,349 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data/5a33f701e/71c53db9771046d1927c405b8516548b/FLAGcb3aadc77 [2022-12-13 20:19:26,360 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/data/5a33f701e/71c53db9771046d1927c405b8516548b [2022-12-13 20:19:26,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:19:26,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:19:26,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:19:26,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:19:26,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:19:26,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be8b062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26, skipping insertion in model container [2022-12-13 20:19:26,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:19:26,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:19:26,604 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-13 20:19:26,611 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-13 20:19:26,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:19:26,627 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:19:26,670 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2022-12-13 20:19:26,673 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_b5850939-6e72-4e50-9792-c10908ff0c1f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2022-12-13 20:19:26,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:19:26,715 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:19:26,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26 WrapperNode [2022-12-13 20:19:26,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:19:26,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:19:26,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:19:26,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:19:26,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,747 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2022-12-13 20:19:26,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:19:26,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:19:26,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:19:26,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:19:26,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:19:26,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:19:26,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:19:26,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:19:26,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (1/1) ... [2022-12-13 20:19:26,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:19:26,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:26,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:19:26,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:19:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-13 20:19:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 20:19:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 20:19:26,830 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 20:19:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 20:19:26,830 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 20:19:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:19:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:19:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:19:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-13 20:19:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:19:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 20:19:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 20:19:26,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-12-13 20:19:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 20:19:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 20:19:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:19:26,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:19:26,833 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 20:19:26,952 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:19:26,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:19:27,290 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:19:27,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:19:27,297 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:19:27,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:27 BoogieIcfgContainer [2022-12-13 20:19:27,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:19:27,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:19:27,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:19:27,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:19:27,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:19:26" (1/3) ... [2022-12-13 20:19:27,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9d858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:19:27, skipping insertion in model container [2022-12-13 20:19:27,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:26" (2/3) ... [2022-12-13 20:19:27,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9d858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:19:27, skipping insertion in model container [2022-12-13 20:19:27,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:27" (3/3) ... [2022-12-13 20:19:27,308 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2022-12-13 20:19:27,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:19:27,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-13 20:19:27,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:19:27,398 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:19:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 165 transitions, 346 flow [2022-12-13 20:19:27,492 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2022-12-13 20:19:27,492 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:19:27,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 10/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 321 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-12-13 20:19:27,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 165 transitions, 346 flow [2022-12-13 20:19:27,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 158 transitions, 328 flow [2022-12-13 20:19:27,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:19:27,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 158 transitions, 328 flow [2022-12-13 20:19:27,519 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 158 transitions, 328 flow [2022-12-13 20:19:27,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 158 transitions, 328 flow [2022-12-13 20:19:27,553 INFO L130 PetriNetUnfolder]: 10/158 cut-off events. [2022-12-13 20:19:27,553 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 20:19:27,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 158 events. 10/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 320 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-12-13 20:19:27,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 5032 [2022-12-13 20:20:12,740 INFO L134 LiptonReduction]: Checked pairs total: 12693 [2022-12-13 20:20:12,740 INFO L136 LiptonReduction]: Total number of compositions: 155 [2022-12-13 20:20:12,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:20:12,759 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;@23ea7262, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:20:12,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 20:20:12,760 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:20:12,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:20:12,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:12,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:20:12,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash 645, now seen corresponding path program 1 times [2022-12-13 20:20:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:12,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785821584] [2022-12-13 20:20:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:12,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:12,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:12,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 20:20:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:12,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 20:20:12,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:12,829 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 20:20:12,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:12,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785821584] [2022-12-13 20:20:12,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785821584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:12,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:12,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:20:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552016101] [2022-12-13 20:20:12,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:12,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:20:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:20:12,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:20:12,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 320 [2022-12-13 20:20:12,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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 20:20:12,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:12,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 320 [2022-12-13 20:20:12,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:13,164 INFO L130 PetriNetUnfolder]: 1270/2058 cut-off events. [2022-12-13 20:20:13,164 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-12-13 20:20:13,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 2058 events. 1270/2058 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10399 event pairs, 994 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 3761. Up to 1886 conditions per place. [2022-12-13 20:20:13,175 INFO L137 encePairwiseOnDemand]: 318/320 looper letters, 41 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2022-12-13 20:20:13,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 186 flow [2022-12-13 20:20:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:20:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:20:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 353 transitions. [2022-12-13 20:20:13,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5515625 [2022-12-13 20:20:13,189 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 353 transitions. [2022-12-13 20:20:13,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 353 transitions. [2022-12-13 20:20:13,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:13,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 353 transitions. [2022-12-13 20:20:13,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:20:13,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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 20:20:13,203 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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 20:20:13,205 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 108 flow. Second operand 2 states and 353 transitions. [2022-12-13 20:20:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 186 flow [2022-12-13 20:20:13,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 20:20:13,211 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 96 flow [2022-12-13 20:20:13,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2022-12-13 20:20:13,216 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2022-12-13 20:20:13,217 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 96 flow [2022-12-13 20:20:13,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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 20:20:13,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:13,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:20:13,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:20:13,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:13,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash 632625, now seen corresponding path program 1 times [2022-12-13 20:20:13,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:13,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603885015] [2022-12-13 20:20:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:13,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:13,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:13,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:13,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 20:20:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:20:13,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:13,568 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 20:20:13,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-13 20:20:13,580 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 20:20:13,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:13,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:13,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603885015] [2022-12-13 20:20:13,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603885015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:13,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:13,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073363958] [2022-12-13 20:20:13,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:13,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:13,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 320 [2022-12-13 20:20:13,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 20:20:13,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:13,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 320 [2022-12-13 20:20:13,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:13,976 INFO L130 PetriNetUnfolder]: 1242/2003 cut-off events. [2022-12-13 20:20:13,976 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 20:20:13,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 2003 events. 1242/2003 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9996 event pairs, 972 based on Foata normal form. 0/1123 useless extension candidates. Maximal degree in co-relation 3851. Up to 1833 conditions per place. [2022-12-13 20:20:13,983 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 37 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 20:20:13,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 170 flow [2022-12-13 20:20:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2022-12-13 20:20:13,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49895833333333334 [2022-12-13 20:20:13,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2022-12-13 20:20:13,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2022-12-13 20:20:13,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:13,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2022-12-13 20:20:13,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:20:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:13,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:13,993 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 96 flow. Second operand 3 states and 479 transitions. [2022-12-13 20:20:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 170 flow [2022-12-13 20:20:13,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:20:13,994 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 96 flow [2022-12-13 20:20:13,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2022-12-13 20:20:13,994 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2022-12-13 20:20:13,994 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 96 flow [2022-12-13 20:20:13,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 20:20:13,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:13,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:20:14,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 20:20:14,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:14,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash 632624, now seen corresponding path program 1 times [2022-12-13 20:20:14,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:14,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160514876] [2022-12-13 20:20:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:14,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:14,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 20:20:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:14,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:20:14,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:14,281 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 20:20:14,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 20:20:14,298 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 20:20:14,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:14,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:14,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160514876] [2022-12-13 20:20:14,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160514876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:14,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:14,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:14,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827434226] [2022-12-13 20:20:14,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:14,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:14,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:14,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 320 [2022-12-13 20:20:14,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 20:20:14,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:14,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 320 [2022-12-13 20:20:14,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:14,648 INFO L130 PetriNetUnfolder]: 1214/1948 cut-off events. [2022-12-13 20:20:14,648 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 20:20:14,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3751 conditions, 1948 events. 1214/1948 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9678 event pairs, 950 based on Foata normal form. 0/1103 useless extension candidates. Maximal degree in co-relation 3747. Up to 1782 conditions per place. [2022-12-13 20:20:14,654 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 35 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 20:20:14,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 166 flow [2022-12-13 20:20:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-12-13 20:20:14,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.509375 [2022-12-13 20:20:14,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-12-13 20:20:14,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-12-13 20:20:14,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:14,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-12-13 20:20:14,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:20:14,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:14,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:14,663 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 96 flow. Second operand 3 states and 489 transitions. [2022-12-13 20:20:14,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 166 flow [2022-12-13 20:20:14,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:14,664 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 92 flow [2022-12-13 20:20:14,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2022-12-13 20:20:14,665 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -7 predicate places. [2022-12-13 20:20:14,665 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 92 flow [2022-12-13 20:20:14,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 20:20:14,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:14,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:20:14,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 20:20:14,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:14,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash 607934813, now seen corresponding path program 1 times [2022-12-13 20:20:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:14,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243215345] [2022-12-13 20:20:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:14,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:14,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:14,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 20:20:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:14,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:20:14,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:14,982 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-12-13 20:20:14,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-12-13 20:20:15,082 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 20:20:15,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:15,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:15,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243215345] [2022-12-13 20:20:15,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243215345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:15,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:15,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352460067] [2022-12-13 20:20:15,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:15,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:15,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 320 [2022-12-13 20:20:15,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 20:20:15,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:15,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 320 [2022-12-13 20:20:15,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:15,500 INFO L130 PetriNetUnfolder]: 1037/1667 cut-off events. [2022-12-13 20:20:15,501 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 20:20:15,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 1667 events. 1037/1667 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7947 event pairs, 793 based on Foata normal form. 0/1004 useless extension candidates. Maximal degree in co-relation 3196. Up to 1513 conditions per place. [2022-12-13 20:20:15,506 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 33 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 20:20:15,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 158 flow [2022-12-13 20:20:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2022-12-13 20:20:15,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2022-12-13 20:20:15,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2022-12-13 20:20:15,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2022-12-13 20:20:15,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:15,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2022-12-13 20:20:15,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 20:20:15,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:15,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:15,510 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 92 flow. Second operand 3 states and 490 transitions. [2022-12-13 20:20:15,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 158 flow [2022-12-13 20:20:15,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:15,511 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 88 flow [2022-12-13 20:20:15,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 20:20:15,512 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2022-12-13 20:20:15,512 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 88 flow [2022-12-13 20:20:15,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 20:20:15,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:15,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:20:15,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 20:20:15,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:15,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash 607934812, now seen corresponding path program 1 times [2022-12-13 20:20:15,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:15,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207676278] [2022-12-13 20:20:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:15,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:15,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:15,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 20:20:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:15,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:20:15,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:15,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:20:15,820 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 20:20:15,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-12-13 20:20:15,836 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:20:15,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 20:20:15,950 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 20:20:15,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:15,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207676278] [2022-12-13 20:20:15,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207676278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:15,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:15,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943131178] [2022-12-13 20:20:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:15,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:16,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 320 [2022-12-13 20:20:16,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:20:16,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:16,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 320 [2022-12-13 20:20:16,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:16,547 INFO L130 PetriNetUnfolder]: 1531/2461 cut-off events. [2022-12-13 20:20:16,547 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 20:20:16,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2461 events. 1531/2461 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11639 event pairs, 535 based on Foata normal form. 0/1502 useless extension candidates. Maximal degree in co-relation 4744. Up to 1395 conditions per place. [2022-12-13 20:20:16,554 INFO L137 encePairwiseOnDemand]: 314/320 looper letters, 59 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2022-12-13 20:20:16,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 271 flow [2022-12-13 20:20:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 20:20:16,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5427083333333333 [2022-12-13 20:20:16,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 20:20:16,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 20:20:16,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:16,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 20:20:16,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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 20:20:16,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:16,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:16,560 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 88 flow. Second operand 3 states and 521 transitions. [2022-12-13 20:20:16,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 271 flow [2022-12-13 20:20:16,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:16,561 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 107 flow [2022-12-13 20:20:16,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2022-12-13 20:20:16,562 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-12-13 20:20:16,562 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 107 flow [2022-12-13 20:20:16,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:20:16,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:16,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:20:16,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 20:20:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:16,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:16,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash 607968295, now seen corresponding path program 1 times [2022-12-13 20:20:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:16,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939131790] [2022-12-13 20:20:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:16,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:16,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:16,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:16,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 20:20:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:16,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:20:16,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:16,885 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:20:16,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-12-13 20:20:16,920 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 20:20:16,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:16,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939131790] [2022-12-13 20:20:16,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939131790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:16,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:16,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681270309] [2022-12-13 20:20:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:16,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:17,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 320 [2022-12-13 20:20:17,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 20:20:17,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:17,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 320 [2022-12-13 20:20:17,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:17,264 INFO L130 PetriNetUnfolder]: 1174/1952 cut-off events. [2022-12-13 20:20:17,265 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-12-13 20:20:17,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 1952 events. 1174/1952 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9291 event pairs, 852 based on Foata normal form. 0/1361 useless extension candidates. Maximal degree in co-relation 3986. Up to 1747 conditions per place. [2022-12-13 20:20:17,272 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 34 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-12-13 20:20:17,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 177 flow [2022-12-13 20:20:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-12-13 20:20:17,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2022-12-13 20:20:17,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-12-13 20:20:17,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-12-13 20:20:17,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:17,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-12-13 20:20:17,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 20:20:17,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:17,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:17,276 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 107 flow. Second operand 3 states and 485 transitions. [2022-12-13 20:20:17,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 177 flow [2022-12-13 20:20:17,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:20:17,277 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 106 flow [2022-12-13 20:20:17,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2022-12-13 20:20:17,278 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-12-13 20:20:17,278 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 106 flow [2022-12-13 20:20:17,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 20:20:17,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:17,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:20:17,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 20:20:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:17,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash 607968297, now seen corresponding path program 1 times [2022-12-13 20:20:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624072249] [2022-12-13 20:20:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:17,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:17,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:17,485 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:17,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 20:20:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:17,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:20:17,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:17,576 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 20:20:17,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-12-13 20:20:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:20:17,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:17,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:17,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624072249] [2022-12-13 20:20:17,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624072249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:17,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:17,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752721436] [2022-12-13 20:20:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:17,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:17,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 320 [2022-12-13 20:20:17,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 20:20:17,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:17,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 320 [2022-12-13 20:20:17,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:17,859 INFO L130 PetriNetUnfolder]: 754/1304 cut-off events. [2022-12-13 20:20:17,859 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-12-13 20:20:17,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 1304 events. 754/1304 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5901 event pairs, 532 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2637. Up to 1161 conditions per place. [2022-12-13 20:20:17,862 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 33 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 20:20:17,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 174 flow [2022-12-13 20:20:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-12-13 20:20:17,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2022-12-13 20:20:17,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-12-13 20:20:17,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-12-13 20:20:17,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:17,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-12-13 20:20:17,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 20:20:17,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:17,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:17,866 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 106 flow. Second operand 3 states and 472 transitions. [2022-12-13 20:20:17,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 174 flow [2022-12-13 20:20:17,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:17,867 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 104 flow [2022-12-13 20:20:17,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 20:20:17,868 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2022-12-13 20:20:17,868 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 104 flow [2022-12-13 20:20:17,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 20:20:17,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:17,868 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:17,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 20:20:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:18,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 109780452, now seen corresponding path program 1 times [2022-12-13 20:20:18,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:18,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575453516] [2022-12-13 20:20:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:18,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:18,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:18,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 20:20:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:20:18,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:18,218 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 20:20:18,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:18,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575453516] [2022-12-13 20:20:18,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575453516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:18,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:18,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:20:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602127120] [2022-12-13 20:20:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:18,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:18,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:18,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 320 [2022-12-13 20:20:18,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:20:18,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:18,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 320 [2022-12-13 20:20:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:18,723 INFO L130 PetriNetUnfolder]: 643/1109 cut-off events. [2022-12-13 20:20:18,723 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 20:20:18,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 1109 events. 643/1109 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4657 event pairs, 205 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 2279. Up to 675 conditions per place. [2022-12-13 20:20:18,726 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 53 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-13 20:20:18,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 257 flow [2022-12-13 20:20:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-12-13 20:20:18,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.525 [2022-12-13 20:20:18,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-12-13 20:20:18,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-12-13 20:20:18,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:18,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-12-13 20:20:18,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 20:20:18,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:18,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:18,730 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 104 flow. Second operand 3 states and 504 transitions. [2022-12-13 20:20:18,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 257 flow [2022-12-13 20:20:18,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:18,731 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 104 flow [2022-12-13 20:20:18,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-12-13 20:20:18,731 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-12-13 20:20:18,731 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 104 flow [2022-12-13 20:20:18,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:20:18,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:18,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:18,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 20:20:18,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:18,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:18,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash -974710615, now seen corresponding path program 1 times [2022-12-13 20:20:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659023643] [2022-12-13 20:20:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:18,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:18,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:18,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 20:20:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:19,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:20:19,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:19,056 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 20:20:19,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:19,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659023643] [2022-12-13 20:20:19,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659023643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:19,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:19,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:20:19,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306113458] [2022-12-13 20:20:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:19,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:19,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:19,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:19,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 320 [2022-12-13 20:20:19,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 20:20:19,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:19,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 320 [2022-12-13 20:20:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:19,352 INFO L130 PetriNetUnfolder]: 804/1354 cut-off events. [2022-12-13 20:20:19,352 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-12-13 20:20:19,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 1354 events. 804/1354 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5795 event pairs, 343 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 2914. Up to 734 conditions per place. [2022-12-13 20:20:19,355 INFO L137 encePairwiseOnDemand]: 315/320 looper letters, 57 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2022-12-13 20:20:19,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 287 flow [2022-12-13 20:20:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-12-13 20:20:19,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2022-12-13 20:20:19,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-12-13 20:20:19,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-12-13 20:20:19,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:19,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-12-13 20:20:19,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 20:20:19,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:19,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:19,359 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 104 flow. Second operand 3 states and 508 transitions. [2022-12-13 20:20:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 287 flow [2022-12-13 20:20:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:19,360 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 126 flow [2022-12-13 20:20:19,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 20:20:19,361 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2022-12-13 20:20:19,361 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 126 flow [2022-12-13 20:20:19,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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 20:20:19,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:19,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:19,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 20:20:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:19,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:19,564 INFO L85 PathProgramCache]: Analyzing trace with hash 532207392, now seen corresponding path program 1 times [2022-12-13 20:20:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:19,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643699651] [2022-12-13 20:20:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:19,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:19,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:19,568 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:19,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 20:20:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:20:19,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:19,656 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 20:20:19,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:19,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643699651] [2022-12-13 20:20:19,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643699651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:19,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:19,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:20:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449614521] [2022-12-13 20:20:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:19,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:19,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:19,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 320 [2022-12-13 20:20:19,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 20:20:19,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:19,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 320 [2022-12-13 20:20:19,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:19,921 INFO L130 PetriNetUnfolder]: 866/1521 cut-off events. [2022-12-13 20:20:19,921 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-13 20:20:19,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 1521 events. 866/1521 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7550 event pairs, 393 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 3329. Up to 1187 conditions per place. [2022-12-13 20:20:19,925 INFO L137 encePairwiseOnDemand]: 317/320 looper letters, 53 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2022-12-13 20:20:19,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 292 flow [2022-12-13 20:20:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-12-13 20:20:19,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2022-12-13 20:20:19,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-12-13 20:20:19,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-12-13 20:20:19,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:19,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-12-13 20:20:19,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 20:20:19,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:19,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:19,929 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 126 flow. Second operand 3 states and 508 transitions. [2022-12-13 20:20:19,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 292 flow [2022-12-13 20:20:19,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:19,930 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 130 flow [2022-12-13 20:20:19,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-12-13 20:20:19,930 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2022-12-13 20:20:19,930 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 130 flow [2022-12-13 20:20:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 20:20:19,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:19,931 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:19,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 20:20:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:20,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2011277968, now seen corresponding path program 1 times [2022-12-13 20:20:20,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:20,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873884357] [2022-12-13 20:20:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:20,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:20,138 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:20,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 20:20:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:20,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:20:20,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:20:20,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:20,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:20,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873884357] [2022-12-13 20:20:20,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873884357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:20,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:20,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:20:20,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617373775] [2022-12-13 20:20:20,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:20,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:20,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:20,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:20,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:20,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 320 [2022-12-13 20:20:20,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 20:20:20,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:20,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 320 [2022-12-13 20:20:20,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:20,526 INFO L130 PetriNetUnfolder]: 607/1126 cut-off events. [2022-12-13 20:20:20,526 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-12-13 20:20:20,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1126 events. 607/1126 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5266 event pairs, 239 based on Foata normal form. 60/1063 useless extension candidates. Maximal degree in co-relation 2495. Up to 636 conditions per place. [2022-12-13 20:20:20,529 INFO L137 encePairwiseOnDemand]: 313/320 looper letters, 48 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2022-12-13 20:20:20,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 272 flow [2022-12-13 20:20:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-12-13 20:20:20,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5197916666666667 [2022-12-13 20:20:20,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-12-13 20:20:20,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-12-13 20:20:20,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:20,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-12-13 20:20:20,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 20:20:20,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:20,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:20,534 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 130 flow. Second operand 3 states and 499 transitions. [2022-12-13 20:20:20,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 272 flow [2022-12-13 20:20:20,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 265 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 20:20:20,536 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 146 flow [2022-12-13 20:20:20,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2022-12-13 20:20:20,536 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2022-12-13 20:20:20,536 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 146 flow [2022-12-13 20:20:20,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 20:20:20,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:20,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:20,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 20:20:20,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:20,738 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1409298933, now seen corresponding path program 1 times [2022-12-13 20:20:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:20,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543776420] [2022-12-13 20:20:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:20,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:20,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:20,741 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:20,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 20:20:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:20,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:20:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:20,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-13 20:20:20,870 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 20:20:20,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:20,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:20,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543776420] [2022-12-13 20:20:20,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543776420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:20,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:20,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:20:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745534085] [2022-12-13 20:20:20,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:20,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 320 [2022-12-13 20:20:20,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:20:20,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:20,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 320 [2022-12-13 20:20:20,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:21,123 INFO L130 PetriNetUnfolder]: 597/1090 cut-off events. [2022-12-13 20:20:21,123 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-12-13 20:20:21,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 1090 events. 597/1090 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4889 event pairs, 179 based on Foata normal form. 22/1042 useless extension candidates. Maximal degree in co-relation 2575. Up to 600 conditions per place. [2022-12-13 20:20:21,125 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 46 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2022-12-13 20:20:21,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 280 flow [2022-12-13 20:20:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 20:20:21,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.515625 [2022-12-13 20:20:21,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 20:20:21,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 20:20:21,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:21,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 20:20:21,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 20:20:21,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:21,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:21,131 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 146 flow. Second operand 3 states and 495 transitions. [2022-12-13 20:20:21,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 280 flow [2022-12-13 20:20:21,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:21,134 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 146 flow [2022-12-13 20:20:21,134 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2022-12-13 20:20:21,134 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2022-12-13 20:20:21,134 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 146 flow [2022-12-13 20:20:21,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 20:20:21,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:21,135 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:21,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 20:20:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:21,336 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2022017244, now seen corresponding path program 1 times [2022-12-13 20:20:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:21,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50883658] [2022-12-13 20:20:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:21,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:21,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:21,342 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:21,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 20:20:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:21,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:20:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:21,561 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 20:20:21,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:21,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:21,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50883658] [2022-12-13 20:20:21,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50883658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:21,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:21,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:20:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395537901] [2022-12-13 20:20:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:20:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:21,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:20:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:20:21,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 320 [2022-12-13 20:20:21,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 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 20:20:21,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:21,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 320 [2022-12-13 20:20:21,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:23,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 20:20:23,561 INFO L130 PetriNetUnfolder]: 783/1507 cut-off events. [2022-12-13 20:20:23,561 INFO L131 PetriNetUnfolder]: For 366/370 co-relation queries the response was YES. [2022-12-13 20:20:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1507 events. 783/1507 cut-off events. For 366/370 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7143 event pairs, 325 based on Foata normal form. 0/1442 useless extension candidates. Maximal degree in co-relation 3637. Up to 568 conditions per place. [2022-12-13 20:20:23,565 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 80 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2022-12-13 20:20:23,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 463 flow [2022-12-13 20:20:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:20:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:20:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 662 transitions. [2022-12-13 20:20:23,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5171875 [2022-12-13 20:20:23,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 662 transitions. [2022-12-13 20:20:23,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 662 transitions. [2022-12-13 20:20:23,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:23,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 662 transitions. [2022-12-13 20:20:23,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 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 20:20:23,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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 20:20:23,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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 20:20:23,570 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 146 flow. Second operand 4 states and 662 transitions. [2022-12-13 20:20:23,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 463 flow [2022-12-13 20:20:23,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:20:23,572 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 156 flow [2022-12-13 20:20:23,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2022-12-13 20:20:23,572 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2022-12-13 20:20:23,572 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 156 flow [2022-12-13 20:20:23,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 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 20:20:23,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:23,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:23,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 20:20:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:23,774 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash 152354071, now seen corresponding path program 1 times [2022-12-13 20:20:23,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924933778] [2022-12-13 20:20:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:23,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:23,779 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:23,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 20:20:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:23,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:20:23,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:24,193 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 20:20:24,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:24,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:24,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924933778] [2022-12-13 20:20:24,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924933778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:24,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:24,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:20:24,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860792020] [2022-12-13 20:20:24,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:24,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:20:24,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:24,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:20:24,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:20:24,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 320 [2022-12-13 20:20:24,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 20:20:24,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:24,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 320 [2022-12-13 20:20:24,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:24,714 INFO L130 PetriNetUnfolder]: 627/1221 cut-off events. [2022-12-13 20:20:24,714 INFO L131 PetriNetUnfolder]: For 320/324 co-relation queries the response was YES. [2022-12-13 20:20:24,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 1221 events. 627/1221 cut-off events. For 320/324 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5426 event pairs, 257 based on Foata normal form. 0/1186 useless extension candidates. Maximal degree in co-relation 2874. Up to 473 conditions per place. [2022-12-13 20:20:24,717 INFO L137 encePairwiseOnDemand]: 316/320 looper letters, 69 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2022-12-13 20:20:24,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 78 transitions, 403 flow [2022-12-13 20:20:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:20:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:20:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 644 transitions. [2022-12-13 20:20:24,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.503125 [2022-12-13 20:20:24,722 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 644 transitions. [2022-12-13 20:20:24,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 644 transitions. [2022-12-13 20:20:24,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:24,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 644 transitions. [2022-12-13 20:20:24,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 20:20:24,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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 20:20:24,724 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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 20:20:24,724 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 156 flow. Second operand 4 states and 644 transitions. [2022-12-13 20:20:24,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 78 transitions, 403 flow [2022-12-13 20:20:24,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 78 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:24,726 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 162 flow [2022-12-13 20:20:24,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2022-12-13 20:20:24,727 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2022-12-13 20:20:24,727 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 162 flow [2022-12-13 20:20:24,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 20:20:24,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:24,727 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:24,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-13 20:20:24,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:24,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1371333429, now seen corresponding path program 1 times [2022-12-13 20:20:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:24,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231675663] [2022-12-13 20:20:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:24,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:24,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:24,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 20:20:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:25,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:20:25,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:20:25,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:25,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:25,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231675663] [2022-12-13 20:20:25,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231675663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:25,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:25,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:20:25,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076819289] [2022-12-13 20:20:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:25,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:20:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:25,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:20:25,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:20:25,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 320 [2022-12-13 20:20:25,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 20:20:25,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:25,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 320 [2022-12-13 20:20:25,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:25,305 INFO L130 PetriNetUnfolder]: 527/1018 cut-off events. [2022-12-13 20:20:25,305 INFO L131 PetriNetUnfolder]: For 342/344 co-relation queries the response was YES. [2022-12-13 20:20:25,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1018 events. 527/1018 cut-off events. For 342/344 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4184 event pairs, 234 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 2443. Up to 602 conditions per place. [2022-12-13 20:20:25,308 INFO L137 encePairwiseOnDemand]: 315/320 looper letters, 48 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2022-12-13 20:20:25,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 303 flow [2022-12-13 20:20:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:20:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:20:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-12-13 20:20:25,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5197916666666667 [2022-12-13 20:20:25,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-12-13 20:20:25,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-12-13 20:20:25,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:25,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-12-13 20:20:25,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 20:20:25,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:25,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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 20:20:25,312 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 162 flow. Second operand 3 states and 499 transitions. [2022-12-13 20:20:25,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 303 flow [2022-12-13 20:20:25,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:20:25,314 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 160 flow [2022-12-13 20:20:25,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2022-12-13 20:20:25,314 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2022-12-13 20:20:25,314 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 160 flow [2022-12-13 20:20:25,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 20:20:25,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:25,314 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 20:20:25,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-13 20:20:25,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:25,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:25,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 427918423, now seen corresponding path program 1 times [2022-12-13 20:20:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:25,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810784702] [2022-12-13 20:20:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:25,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:25,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:25,518 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:25,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 20:20:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:25,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:20:25,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:25,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-13 20:20:25,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-13 20:20:25,854 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 20:20:25,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:25,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810784702] [2022-12-13 20:20:25,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810784702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:25,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:25,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:20:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479530159] [2022-12-13 20:20:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:25,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:20:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:20:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:20:26,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 320 [2022-12-13 20:20:26,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:26,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:26,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 320 [2022-12-13 20:20:26,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:26,910 INFO L130 PetriNetUnfolder]: 608/1179 cut-off events. [2022-12-13 20:20:26,911 INFO L131 PetriNetUnfolder]: For 367/373 co-relation queries the response was YES. [2022-12-13 20:20:26,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2867 conditions, 1179 events. 608/1179 cut-off events. For 367/373 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5226 event pairs, 203 based on Foata normal form. 32/1200 useless extension candidates. Maximal degree in co-relation 2855. Up to 813 conditions per place. [2022-12-13 20:20:26,913 INFO L137 encePairwiseOnDemand]: 309/320 looper letters, 74 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2022-12-13 20:20:26,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 477 flow [2022-12-13 20:20:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:20:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 20:20:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1246 transitions. [2022-12-13 20:20:26,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4326388888888889 [2022-12-13 20:20:26,915 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1246 transitions. [2022-12-13 20:20:26,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1246 transitions. [2022-12-13 20:20:26,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:26,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1246 transitions. [2022-12-13 20:20:26,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.44444444444446) internal successors, (1246), 9 states have internal predecessors, (1246), 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 20:20:26,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 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 20:20:26,920 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 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 20:20:26,920 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 160 flow. Second operand 9 states and 1246 transitions. [2022-12-13 20:20:26,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 477 flow [2022-12-13 20:20:26,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:20:26,922 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 244 flow [2022-12-13 20:20:26,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=244, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2022-12-13 20:20:26,922 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2022-12-13 20:20:26,922 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 244 flow [2022-12-13 20:20:26,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:26,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:26,923 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 20:20:26,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 20:20:27,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:27,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:27,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:27,125 INFO L85 PathProgramCache]: Analyzing trace with hash -856784315, now seen corresponding path program 2 times [2022-12-13 20:20:27,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:27,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778952535] [2022-12-13 20:20:27,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:20:27,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:27,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:27,129 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:27,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 20:20:27,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:20:27,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:20:27,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:20:27,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:27,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-13 20:20:27,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-13 20:20:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:20:27,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:27,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:27,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778952535] [2022-12-13 20:20:27,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778952535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:27,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:27,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:20:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880115448] [2022-12-13 20:20:27,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:27,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:20:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:20:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:20:28,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 320 [2022-12-13 20:20:28,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:28,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:28,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 320 [2022-12-13 20:20:28,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:29,110 INFO L130 PetriNetUnfolder]: 752/1463 cut-off events. [2022-12-13 20:20:29,110 INFO L131 PetriNetUnfolder]: For 1402/1410 co-relation queries the response was YES. [2022-12-13 20:20:29,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 1463 events. 752/1463 cut-off events. For 1402/1410 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7025 event pairs, 289 based on Foata normal form. 44/1493 useless extension candidates. Maximal degree in co-relation 4171. Up to 971 conditions per place. [2022-12-13 20:20:29,114 INFO L137 encePairwiseOnDemand]: 309/320 looper letters, 75 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2022-12-13 20:20:29,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 627 flow [2022-12-13 20:20:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:20:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 20:20:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1249 transitions. [2022-12-13 20:20:29,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43368055555555557 [2022-12-13 20:20:29,116 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1249 transitions. [2022-12-13 20:20:29,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1249 transitions. [2022-12-13 20:20:29,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:29,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1249 transitions. [2022-12-13 20:20:29,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.77777777777777) internal successors, (1249), 9 states have internal predecessors, (1249), 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 20:20:29,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 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 20:20:29,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 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 20:20:29,121 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 244 flow. Second operand 9 states and 1249 transitions. [2022-12-13 20:20:29,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 627 flow [2022-12-13 20:20:29,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 605 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 20:20:29,124 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 399 flow [2022-12-13 20:20:29,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=399, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2022-12-13 20:20:29,125 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2022-12-13 20:20:29,125 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 399 flow [2022-12-13 20:20:29,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:29,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:29,125 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 20:20:29,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-12-13 20:20:29,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:29,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1444764667, now seen corresponding path program 3 times [2022-12-13 20:20:29,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:29,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689271941] [2022-12-13 20:20:29,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:20:29,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:29,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:29,332 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:29,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 20:20:29,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 20:20:29,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:20:29,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:20:29,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:29,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-13 20:20:29,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-13 20:20:29,665 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 20:20:29,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:29,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:29,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689271941] [2022-12-13 20:20:29,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689271941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:29,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:29,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:20:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966230196] [2022-12-13 20:20:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:29,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:20:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:20:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:20:30,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 320 [2022-12-13 20:20:30,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 399 flow. Second operand has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:30,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:30,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 320 [2022-12-13 20:20:30,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:31,016 INFO L130 PetriNetUnfolder]: 989/1946 cut-off events. [2022-12-13 20:20:31,017 INFO L131 PetriNetUnfolder]: For 5410/5426 co-relation queries the response was YES. [2022-12-13 20:20:31,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 1946 events. 989/1946 cut-off events. For 5410/5426 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10550 event pairs, 274 based on Foata normal form. 34/1964 useless extension candidates. Maximal degree in co-relation 6474. Up to 822 conditions per place. [2022-12-13 20:20:31,023 INFO L137 encePairwiseOnDemand]: 308/320 looper letters, 103 selfloop transitions, 29 changer transitions 0/138 dead transitions. [2022-12-13 20:20:31,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 1054 flow [2022-12-13 20:20:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:20:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:20:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1656 transitions. [2022-12-13 20:20:31,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43125 [2022-12-13 20:20:31,026 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1656 transitions. [2022-12-13 20:20:31,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1656 transitions. [2022-12-13 20:20:31,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:31,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1656 transitions. [2022-12-13 20:20:31,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 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 20:20:31,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 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 20:20:31,031 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 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 20:20:31,031 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 399 flow. Second operand 12 states and 1656 transitions. [2022-12-13 20:20:31,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 1054 flow [2022-12-13 20:20:31,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 1018 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-12-13 20:20:31,040 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 587 flow [2022-12-13 20:20:31,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2022-12-13 20:20:31,040 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 41 predicate places. [2022-12-13 20:20:31,040 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 587 flow [2022-12-13 20:20:31,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:31,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:31,041 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 20:20:31,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 20:20:31,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:31,241 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash 61928407, now seen corresponding path program 4 times [2022-12-13 20:20:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628278946] [2022-12-13 20:20:31,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:20:31,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:31,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:31,243 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:31,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 20:20:31,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:20:31,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:20:31,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:20:31,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:31,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-13 20:20:31,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-13 20:20:31,535 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 20:20:31,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:31,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628278946] [2022-12-13 20:20:31,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628278946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:31,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:31,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:20:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351309376] [2022-12-13 20:20:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:20:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:20:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:20:31,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 320 [2022-12-13 20:20:31,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 587 flow. Second operand has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:31,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:31,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 320 [2022-12-13 20:20:31,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:32,802 INFO L130 PetriNetUnfolder]: 1101/2150 cut-off events. [2022-12-13 20:20:32,802 INFO L131 PetriNetUnfolder]: For 6970/6988 co-relation queries the response was YES. [2022-12-13 20:20:32,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7543 conditions, 2150 events. 1101/2150 cut-off events. For 6970/6988 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11874 event pairs, 337 based on Foata normal form. 32/2160 useless extension candidates. Maximal degree in co-relation 7513. Up to 1562 conditions per place. [2022-12-13 20:20:32,810 INFO L137 encePairwiseOnDemand]: 309/320 looper letters, 93 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2022-12-13 20:20:32,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 121 transitions, 1033 flow [2022-12-13 20:20:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 20:20:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 20:20:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1246 transitions. [2022-12-13 20:20:32,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4326388888888889 [2022-12-13 20:20:32,812 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1246 transitions. [2022-12-13 20:20:32,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1246 transitions. [2022-12-13 20:20:32,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:32,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1246 transitions. [2022-12-13 20:20:32,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.44444444444446) internal successors, (1246), 9 states have internal predecessors, (1246), 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 20:20:32,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 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 20:20:32,815 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 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 20:20:32,815 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 587 flow. Second operand 9 states and 1246 transitions. [2022-12-13 20:20:32,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 121 transitions, 1033 flow [2022-12-13 20:20:32,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 1006 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 20:20:32,825 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 727 flow [2022-12-13 20:20:32,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=727, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2022-12-13 20:20:32,825 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 53 predicate places. [2022-12-13 20:20:32,825 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 727 flow [2022-12-13 20:20:32,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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 20:20:32,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:32,825 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:32,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 20:20:33,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:33,026 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1248211795, now seen corresponding path program 5 times [2022-12-13 20:20:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:33,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048434464] [2022-12-13 20:20:33,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:20:33,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:33,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:33,027 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:33,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 20:20:33,180 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:20:33,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:20:33,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 20:20:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:33,215 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-12-13 20:20:33,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 20:20:33,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-13 20:20:33,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-12-13 20:20:33,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-12-13 20:20:33,469 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 20:20:33,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:20:33,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 20:20:33,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048434464] [2022-12-13 20:20:33,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048434464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:20:33,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:20:33,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 20:20:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066890938] [2022-12-13 20:20:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:20:33,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:20:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 20:20:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:20:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:20:34,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 320 [2022-12-13 20:20:34,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 727 flow. Second operand has 9 states, 9 states have (on average 128.77777777777777) internal successors, (1159), 9 states have internal predecessors, (1159), 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 20:20:34,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:20:34,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 320 [2022-12-13 20:20:34,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:20:34,917 INFO L130 PetriNetUnfolder]: 1127/2192 cut-off events. [2022-12-13 20:20:34,918 INFO L131 PetriNetUnfolder]: For 8362/8384 co-relation queries the response was YES. [2022-12-13 20:20:34,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7972 conditions, 2192 events. 1127/2192 cut-off events. For 8362/8384 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12056 event pairs, 235 based on Foata normal form. 36/2212 useless extension candidates. Maximal degree in co-relation 7936. Up to 582 conditions per place. [2022-12-13 20:20:34,925 INFO L137 encePairwiseOnDemand]: 309/320 looper letters, 93 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2022-12-13 20:20:34,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 144 transitions, 1276 flow [2022-12-13 20:20:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:20:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:20:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1631 transitions. [2022-12-13 20:20:34,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42473958333333334 [2022-12-13 20:20:34,928 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1631 transitions. [2022-12-13 20:20:34,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1631 transitions. [2022-12-13 20:20:34,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:20:34,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1631 transitions. [2022-12-13 20:20:34,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.91666666666666) internal successors, (1631), 12 states have internal predecessors, (1631), 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 20:20:34,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 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 20:20:34,932 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 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 20:20:34,932 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 727 flow. Second operand 12 states and 1631 transitions. [2022-12-13 20:20:34,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 144 transitions, 1276 flow [2022-12-13 20:20:34,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 144 transitions, 1245 flow, removed 11 selfloop flow, removed 1 redundant places. [2022-12-13 20:20:34,944 INFO L231 Difference]: Finished difference. Result has 115 places, 90 transitions, 858 flow [2022-12-13 20:20:34,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=858, PETRI_PLACES=115, PETRI_TRANSITIONS=90} [2022-12-13 20:20:34,944 INFO L288 CegarLoopForPetriNet]: 49 programPoint places, 66 predicate places. [2022-12-13 20:20:34,944 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 90 transitions, 858 flow [2022-12-13 20:20:34,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 128.77777777777777) internal successors, (1159), 9 states have internal predecessors, (1159), 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 20:20:34,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:20:34,945 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:34,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-12-13 20:20:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:35,146 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-12-13 20:20:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -445867220, now seen corresponding path program 1 times [2022-12-13 20:20:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:20:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000149853] [2022-12-13 20:20:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:35,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:35,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:20:35,152 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 20:20:35,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 20:20:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:20:35,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:20:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:20:35,563 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 20:20:35,563 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:20:35,564 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (22 of 23 remaining) [2022-12-13 20:20:35,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-12-13 20:20:35,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-12-13 20:20:35,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-12-13 20:20:35,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (13 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-12-13 20:20:35,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-12-13 20:20:35,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 23 remaining) [2022-12-13 20:20:35,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 20:20:35,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 20:20:35,769 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:35,783 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:20:35,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:20:35,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:20:35 BasicIcfg [2022-12-13 20:20:35,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:20:35,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:20:35,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:20:35,820 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:20:35,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:27" (3/4) ... [2022-12-13 20:20:35,822 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:20:35,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:20:35,823 INFO L158 Benchmark]: Toolchain (without parser) took 69459.52ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 50.9MB in the beginning and 60.0MB in the end (delta: -9.1MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2022-12-13 20:20:35,823 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.3MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:20:35,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.37ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 45.9MB in the end (delta: 4.8MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-12-13 20:20:35,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.33ms. Allocated memory is still 73.4MB. Free memory was 45.9MB in the beginning and 43.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:20:35,823 INFO L158 Benchmark]: Boogie Preprocessor took 22.29ms. Allocated memory is still 73.4MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:20:35,823 INFO L158 Benchmark]: RCFGBuilder took 528.82ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 40.1MB in the end (delta: 1.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-12-13 20:20:35,824 INFO L158 Benchmark]: TraceAbstraction took 68518.21ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 39.3MB in the beginning and 60.9MB in the end (delta: -21.6MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2022-12-13 20:20:35,824 INFO L158 Benchmark]: Witness Printer took 2.25ms. Allocated memory is still 144.7MB. Free memory was 60.9MB in the beginning and 60.0MB in the end (delta: 905.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:20:35,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.3MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.37ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 45.9MB in the end (delta: 4.8MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.33ms. Allocated memory is still 73.4MB. Free memory was 45.9MB in the beginning and 43.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.29ms. Allocated memory is still 73.4MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.82ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 40.1MB in the end (delta: 1.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 68518.21ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 39.3MB in the beginning and 60.9MB in the end (delta: -21.6MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. * Witness Printer took 2.25ms. Allocated memory is still 144.7MB. Free memory was 60.9MB in the beginning and 60.0MB in the end (delta: 905.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.2s, 155 PlacesBefore, 49 PlacesAfterwards, 158 TransitionsBefore, 48 TransitionsAfterwards, 5032 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 155 TotalNumberOfCompositions, 12693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7132, independent: 6811, independent conditional: 0, independent unconditional: 6811, dependent: 321, dependent conditional: 0, dependent unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2757, independent: 2716, independent conditional: 0, independent unconditional: 2716, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7132, independent: 4095, independent conditional: 0, independent unconditional: 4095, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 2757, unknown conditional: 0, unknown unconditional: 2757] , Statistics on independence cache: Total cache size (in pairs): 334, Positive cache size: 311, Positive conditional cache size: 0, Positive unconditional cache size: 311, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 746]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 746. Possible FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={7:0}, m={4:0}, next=0, pthread_create(&id1, ((void *)0), t1, ((void *)0))=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={7:0}, m={4:0}, next=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=1, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L710] 1 next = (next+1)%buffer_size [L712] COND TRUE 1 next 0 && first < buffer_size VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=1, send=0] [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 230 locations, 23 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: 68.3s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 45.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2841 SdHoareTripleChecker+Valid, 11.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1981 mSDsluCounter, 1829 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1509 mSDsCounter, 248 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5394 IncrementalHoareTripleChecker+Invalid, 5642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 248 mSolverCounterUnsat, 320 mSDtfsCounter, 5394 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=858occurred in iteration=20, InterpolantAutomatonStates: 97, 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: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 204 ConstructedInterpolants, 8 QuantifiedInterpolants, 2175 SizeOfPredicates, 64 NumberOfNonLiveVariables, 2232 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 3/3 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 20:20:35,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5850939-6e72-4e50-9792-c10908ff0c1f/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: UNKNOWN: Overapproximated counterexample