./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/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_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/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_593a4cb0-f598-478c-b73b-728de9fb5384/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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- 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 20:44:50,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:44:50,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:44:50,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:44:50,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:44:50,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:44:50,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:44:50,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:44:50,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:44:50,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:44:50,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:44:50,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:44:50,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:44:50,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:44:50,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:44:50,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:44:50,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:44:50,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:44:50,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:44:50,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:44:50,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:44:50,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:44:50,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:44:50,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:44:50,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:44:50,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:44:50,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:44:50,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:44:50,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:44:50,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:44:50,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:44:50,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:44:50,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:44:50,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:44:50,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:44:50,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:44:50,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:44:50,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:44:50,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:44:50,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:44:50,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:44:50,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 20:44:50,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:44:50,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:44:50,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:44:50,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:44:50,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:44:50,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:44:50,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:44:50,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:44:50,431 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:44:50,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:44:50,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:44:50,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:44:50,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:44:50,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:44:50,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:44:50,433 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:44:50,433 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:44:50,433 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:44:50,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:44:50,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:44:50,434 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:44:50,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:44:50,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:44:50,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:44:50,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:44:50,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:44:50,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:44:50,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:44:50,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:44:50,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:44:50,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:44:50,436 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:44:50,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:44:50,436 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:44:50,436 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_593a4cb0-f598-478c-b73b-728de9fb5384/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-12-13 20:44:50,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:44:50,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:44:50,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:44:50,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:44:50,654 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:44:50,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-12-13 20:44:53,260 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:44:53,410 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:44:53,410 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-12-13 20:44:53,415 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/data/e1cca6146/e13f92de149a4722b90b3f9243145af7/FLAGbcb06201e [2022-12-13 20:44:53,425 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/data/e1cca6146/e13f92de149a4722b90b3f9243145af7 [2022-12-13 20:44:53,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:44:53,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:44:53,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:44:53,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:44:53,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:44:53,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3cbc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53, skipping insertion in model container [2022-12-13 20:44:53,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:44:53,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:44:53,619 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_593a4cb0-f598-478c-b73b-728de9fb5384/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-12-13 20:44:53,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:44:53,634 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:44:53,651 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_593a4cb0-f598-478c-b73b-728de9fb5384/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-12-13 20:44:53,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:44:53,663 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:44:53,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53 WrapperNode [2022-12-13 20:44:53,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:44:53,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:44:53,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:44:53,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:44:53,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,694 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 193 [2022-12-13 20:44:53,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:44:53,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:44:53,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:44:53,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:44:53,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:44:53,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:44:53,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:44:53,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:44:53,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (1/1) ... [2022-12-13 20:44:53,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:44:53,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:44:53,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:44:53,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:44:53,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 20:44:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 20:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 20:44:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 20:44:53,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 20:44:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 20:44:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:44:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:44:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:44:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:44:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:44:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:44:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:44:53,782 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 20:44:53,883 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:44:53,885 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:44:54,194 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:44:54,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:44:54,205 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:44:54,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:44:54 BoogieIcfgContainer [2022-12-13 20:44:54,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:44:54,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:44:54,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:44:54,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:44:54,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:44:53" (1/3) ... [2022-12-13 20:44:54,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddb9788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:44:54, skipping insertion in model container [2022-12-13 20:44:54,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:44:53" (2/3) ... [2022-12-13 20:44:54,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddb9788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:44:54, skipping insertion in model container [2022-12-13 20:44:54,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:44:54" (3/3) ... [2022-12-13 20:44:54,216 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-12-13 20:44:54,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:44:54,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 20:44:54,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:44:54,332 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:44:54,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 264 transitions, 552 flow [2022-12-13 20:44:54,425 INFO L130 PetriNetUnfolder]: 19/261 cut-off events. [2022-12-13 20:44:54,425 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 20:44:54,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 261 events. 19/261 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 626 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2022-12-13 20:44:54,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 264 transitions, 552 flow [2022-12-13 20:44:54,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 256 transitions, 530 flow [2022-12-13 20:44:54,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:44:54,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 256 transitions, 530 flow [2022-12-13 20:44:54,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 256 transitions, 530 flow [2022-12-13 20:44:54,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 256 transitions, 530 flow [2022-12-13 20:44:54,486 INFO L130 PetriNetUnfolder]: 19/256 cut-off events. [2022-12-13 20:44:54,486 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 20:44:54,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 256 events. 19/256 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 625 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2022-12-13 20:44:54,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 20400 [2022-12-13 20:45:02,299 INFO L134 LiptonReduction]: Checked pairs total: 19198 [2022-12-13 20:45:02,299 INFO L136 LiptonReduction]: Total number of compositions: 323 [2022-12-13 20:45:02,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:45:02,317 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;@70960737, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:45:02,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 20:45:02,319 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 20:45:02,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:02,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:02,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:45:02,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:02,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1111, now seen corresponding path program 1 times [2022-12-13 20:45:02,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:02,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220822632] [2022-12-13 20:45:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:02,402 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 20:45:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:02,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220822632] [2022-12-13 20:45:02,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220822632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:02,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:02,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:45:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999613482] [2022-12-13 20:45:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:45:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:45:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:45:02,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 587 [2022-12-13 20:45:02,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:02,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 587 [2022-12-13 20:45:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:02,527 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2022-12-13 20:45:02,527 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 20:45:02,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 467 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2022-12-13 20:45:02,529 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-12-13 20:45:02,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2022-12-13 20:45:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:45:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:45:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2022-12-13 20:45:02,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4505962521294719 [2022-12-13 20:45:02,541 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2022-12-13 20:45:02,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2022-12-13 20:45:02,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:02,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2022-12-13 20:45:02,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,553 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,554 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 529 transitions. [2022-12-13 20:45:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2022-12-13 20:45:02,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 20:45:02,557 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2022-12-13 20:45:02,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-12-13 20:45:02,561 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-13 20:45:02,561 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2022-12-13 20:45:02,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:02,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:45:02,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:45:02,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1091131, now seen corresponding path program 1 times [2022-12-13 20:45:02,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:02,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113027604] [2022-12-13 20:45:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:02,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:02,685 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 20:45:02,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:02,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113027604] [2022-12-13 20:45:02,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113027604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:02,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:02,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:45:02,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904286504] [2022-12-13 20:45:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:02,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:02,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:02,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:02,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:02,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 587 [2022-12-13 20:45:02,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:02,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 587 [2022-12-13 20:45:02,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:02,792 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2022-12-13 20:45:02,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:02,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 423 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2022-12-13 20:45:02,793 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 20:45:02,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2022-12-13 20:45:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:45:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2022-12-13 20:45:02,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4236229415105054 [2022-12-13 20:45:02,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2022-12-13 20:45:02,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2022-12-13 20:45:02,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:02,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2022-12-13 20:45:02,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,801 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 746 transitions. [2022-12-13 20:45:02,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2022-12-13 20:45:02,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:45:02,802 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2022-12-13 20:45:02,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-13 20:45:02,803 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-13 20:45:02,803 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2022-12-13 20:45:02,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:02,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:45:02,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:45:02,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1091133, now seen corresponding path program 1 times [2022-12-13 20:45:02,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:02,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569164683] [2022-12-13 20:45:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:02,908 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 20:45:02,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:02,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569164683] [2022-12-13 20:45:02,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569164683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:02,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:02,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:45:02,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988396689] [2022-12-13 20:45:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:02,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 587 [2022-12-13 20:45:02,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:02,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:02,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 587 [2022-12-13 20:45:02,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:03,022 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2022-12-13 20:45:03,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:03,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 387 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2022-12-13 20:45:03,024 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-12-13 20:45:03,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2022-12-13 20:45:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:45:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2022-12-13 20:45:03,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43100511073253833 [2022-12-13 20:45:03,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2022-12-13 20:45:03,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2022-12-13 20:45:03,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:03,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2022-12-13 20:45:03,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,040 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 759 transitions. [2022-12-13 20:45:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2022-12-13 20:45:03,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:03,040 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2022-12-13 20:45:03,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-13 20:45:03,041 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-12-13 20:45:03,041 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2022-12-13 20:45:03,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:03,042 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:45:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:45:03,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1048602208, now seen corresponding path program 1 times [2022-12-13 20:45:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:03,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91492456] [2022-12-13 20:45:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:45:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:03,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91492456] [2022-12-13 20:45:03,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91492456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:03,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:03,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:45:03,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131948912] [2022-12-13 20:45:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:03,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:03,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:03,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 587 [2022-12-13 20:45:03,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:03,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 587 [2022-12-13 20:45:03,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:03,235 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2022-12-13 20:45:03,235 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:03,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 343 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2022-12-13 20:45:03,236 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-12-13 20:45:03,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2022-12-13 20:45:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:45:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2022-12-13 20:45:03,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4298693923906871 [2022-12-13 20:45:03,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2022-12-13 20:45:03,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2022-12-13 20:45:03,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:03,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2022-12-13 20:45:03,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,246 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 757 transitions. [2022-12-13 20:45:03,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2022-12-13 20:45:03,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:03,247 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2022-12-13 20:45:03,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2022-12-13 20:45:03,248 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2022-12-13 20:45:03,248 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2022-12-13 20:45:03,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:03,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:45:03,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:45:03,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1048602210, now seen corresponding path program 1 times [2022-12-13 20:45:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:03,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355471923] [2022-12-13 20:45:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:03,301 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 20:45:03,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:03,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355471923] [2022-12-13 20:45:03,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355471923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:03,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:03,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:45:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612371691] [2022-12-13 20:45:03,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:03,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 587 [2022-12-13 20:45:03,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:03,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 587 [2022-12-13 20:45:03,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:03,409 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2022-12-13 20:45:03,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:03,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 298 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2022-12-13 20:45:03,410 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-12-13 20:45:03,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2022-12-13 20:45:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:45:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2022-12-13 20:45:03,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4202157864849517 [2022-12-13 20:45:03,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2022-12-13 20:45:03,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2022-12-13 20:45:03,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:03,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2022-12-13 20:45:03,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,421 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 740 transitions. [2022-12-13 20:45:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2022-12-13 20:45:03,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:03,422 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2022-12-13 20:45:03,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-12-13 20:45:03,422 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-12-13 20:45:03,423 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2022-12-13 20:45:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:03,423 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:03,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:45:03,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1610567285, now seen corresponding path program 1 times [2022-12-13 20:45:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:03,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580421503] [2022-12-13 20:45:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:03,507 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 20:45:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580421503] [2022-12-13 20:45:03,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580421503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:03,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:03,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:45:03,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180421687] [2022-12-13 20:45:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:03,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:03,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:03,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 587 [2022-12-13 20:45:03,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:03,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 587 [2022-12-13 20:45:03,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:03,650 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2022-12-13 20:45:03,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:03,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2022-12-13 20:45:03,651 INFO L137 encePairwiseOnDemand]: 585/587 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-12-13 20:45:03,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2022-12-13 20:45:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:45:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-12-13 20:45:03,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40545144804088584 [2022-12-13 20:45:03,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-12-13 20:45:03,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-12-13 20:45:03,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:03,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-12-13 20:45:03,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,659 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 714 transitions. [2022-12-13 20:45:03,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2022-12-13 20:45:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:03,659 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2022-12-13 20:45:03,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2022-12-13 20:45:03,660 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-12-13 20:45:03,660 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2022-12-13 20:45:03,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:03,661 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:03,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:45:03,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1610567284, now seen corresponding path program 1 times [2022-12-13 20:45:03,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:03,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349918176] [2022-12-13 20:45:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:03,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:03,742 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 20:45:03,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:03,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349918176] [2022-12-13 20:45:03,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349918176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:03,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:03,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:45:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528939227] [2022-12-13 20:45:03,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:03,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:45:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:45:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:45:03,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 587 [2022-12-13 20:45:03,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:03,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 587 [2022-12-13 20:45:03,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:03,827 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2022-12-13 20:45:03,828 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:45:03,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2022-12-13 20:45:03,828 INFO L137 encePairwiseOnDemand]: 585/587 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 20:45:03,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2022-12-13 20:45:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:45:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:45:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2022-12-13 20:45:03,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42703009653605906 [2022-12-13 20:45:03,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2022-12-13 20:45:03,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2022-12-13 20:45:03,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:03,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2022-12-13 20:45:03,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,833 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 752 transitions. [2022-12-13 20:45:03,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2022-12-13 20:45:03,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:03,833 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2022-12-13 20:45:03,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2022-12-13 20:45:03,834 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-12-13 20:45:03,834 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2022-12-13 20:45:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:03,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:03,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:45:03,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 599718702, now seen corresponding path program 1 times [2022-12-13 20:45:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:03,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644797306] [2022-12-13 20:45:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:03,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:04,766 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 20:45:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644797306] [2022-12-13 20:45:04,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644797306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:04,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:04,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:45:04,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174206915] [2022-12-13 20:45:04,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:04,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:04,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:05,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 587 [2022-12-13 20:45:05,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:05,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:05,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 587 [2022-12-13 20:45:05,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:05,352 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2022-12-13 20:45:05,353 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:45:05,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 327 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2022-12-13 20:45:05,354 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2022-12-13 20:45:05,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2022-12-13 20:45:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:45:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:45:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1402 transitions. [2022-12-13 20:45:05,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3980692788188529 [2022-12-13 20:45:05,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1402 transitions. [2022-12-13 20:45:05,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1402 transitions. [2022-12-13 20:45:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:05,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1402 transitions. [2022-12-13 20:45:05,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:05,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:05,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:05,375 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1402 transitions. [2022-12-13 20:45:05,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2022-12-13 20:45:05,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:05,377 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2022-12-13 20:45:05,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2022-12-13 20:45:05,378 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2022-12-13 20:45:05,378 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2022-12-13 20:45:05,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:05,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:05,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:45:05,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1116314218, now seen corresponding path program 2 times [2022-12-13 20:45:05,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:05,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61357457] [2022-12-13 20:45:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:05,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:06,326 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 20:45:06,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61357457] [2022-12-13 20:45:06,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61357457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:06,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:06,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:45:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905943696] [2022-12-13 20:45:06,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:06,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:06,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:06,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:06,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:06,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 587 [2022-12-13 20:45:06,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 228.2) internal successors, (1141), 5 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:06,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:06,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 587 [2022-12-13 20:45:06,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:06,897 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2022-12-13 20:45:06,898 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-12-13 20:45:06,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 400 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2022-12-13 20:45:06,898 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2022-12-13 20:45:06,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2022-12-13 20:45:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:45:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:45:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1394 transitions. [2022-12-13 20:45:06,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39579784213515046 [2022-12-13 20:45:06,903 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1394 transitions. [2022-12-13 20:45:06,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1394 transitions. [2022-12-13 20:45:06,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:06,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1394 transitions. [2022-12-13 20:45:06,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.33333333333334) internal successors, (1394), 6 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:06,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:06,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:06,916 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1394 transitions. [2022-12-13 20:45:06,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2022-12-13 20:45:06,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:06,918 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2022-12-13 20:45:06,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2022-12-13 20:45:06,919 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-13 20:45:06,919 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2022-12-13 20:45:06,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 228.2) internal successors, (1141), 5 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:06,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:06,920 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:45:06,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1346080128, now seen corresponding path program 3 times [2022-12-13 20:45:06,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:06,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966721222] [2022-12-13 20:45:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:06,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:07,729 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 20:45:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:07,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966721222] [2022-12-13 20:45:07,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966721222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:07,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:07,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:45:07,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215530149] [2022-12-13 20:45:07,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:07,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:07,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:07,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 587 [2022-12-13 20:45:07,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:07,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:07,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 587 [2022-12-13 20:45:07,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:08,355 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2022-12-13 20:45:08,355 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-12-13 20:45:08,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 1 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2022-12-13 20:45:08,356 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2022-12-13 20:45:08,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2022-12-13 20:45:08,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:45:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:45:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1386 transitions. [2022-12-13 20:45:08,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.393526405451448 [2022-12-13 20:45:08,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1386 transitions. [2022-12-13 20:45:08,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1386 transitions. [2022-12-13 20:45:08,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:08,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1386 transitions. [2022-12-13 20:45:08,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:08,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:08,367 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:08,367 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1386 transitions. [2022-12-13 20:45:08,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2022-12-13 20:45:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 20:45:08,368 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 91 flow [2022-12-13 20:45:08,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2022-12-13 20:45:08,369 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-13 20:45:08,369 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 91 flow [2022-12-13 20:45:08,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:08,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:08,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:08,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:45:08,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1733336700, now seen corresponding path program 4 times [2022-12-13 20:45:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:08,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377173658] [2022-12-13 20:45:08,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:08,873 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 20:45:08,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:08,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377173658] [2022-12-13 20:45:08,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377173658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:08,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:08,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:45:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822035868] [2022-12-13 20:45:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:08,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:08,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:08,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:09,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 587 [2022-12-13 20:45:09,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:09,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:09,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 587 [2022-12-13 20:45:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:09,353 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2022-12-13 20:45:09,354 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 20:45:09,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 67 events. 15/67 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 182 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 211. Up to 41 conditions per place. [2022-12-13 20:45:09,354 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2022-12-13 20:45:09,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 198 flow [2022-12-13 20:45:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:45:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:45:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1378 transitions. [2022-12-13 20:45:09,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3912549687677456 [2022-12-13 20:45:09,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1378 transitions. [2022-12-13 20:45:09,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1378 transitions. [2022-12-13 20:45:09,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:09,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1378 transitions. [2022-12-13 20:45:09,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.66666666666666) internal successors, (1378), 6 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:09,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:09,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:09,362 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 91 flow. Second operand 6 states and 1378 transitions. [2022-12-13 20:45:09,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 198 flow [2022-12-13 20:45:09,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:45:09,364 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 88 flow [2022-12-13 20:45:09,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2022-12-13 20:45:09,364 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2022-12-13 20:45:09,364 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 88 flow [2022-12-13 20:45:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:09,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:09,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:09,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:45:09,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1072225600, now seen corresponding path program 5 times [2022-12-13 20:45:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:09,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873921709] [2022-12-13 20:45:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:09,946 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 20:45:09,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:09,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873921709] [2022-12-13 20:45:09,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873921709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:09,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:09,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:45:09,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072987472] [2022-12-13 20:45:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:09,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:10,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 587 [2022-12-13 20:45:10,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 226.2) internal successors, (1131), 5 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:10,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:10,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 587 [2022-12-13 20:45:10,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:10,412 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-12-13 20:45:10,412 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 20:45:10,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 37 events. 7/37 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 125. Up to 14 conditions per place. [2022-12-13 20:45:10,413 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2022-12-13 20:45:10,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 168 flow [2022-12-13 20:45:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:45:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:45:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1366 transitions. [2022-12-13 20:45:10,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38784781374219196 [2022-12-13 20:45:10,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1366 transitions. [2022-12-13 20:45:10,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1366 transitions. [2022-12-13 20:45:10,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:10,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1366 transitions. [2022-12-13 20:45:10,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.66666666666666) internal successors, (1366), 6 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:10,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:10,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:10,425 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 88 flow. Second operand 6 states and 1366 transitions. [2022-12-13 20:45:10,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 168 flow [2022-12-13 20:45:10,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 28 transitions, 153 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-13 20:45:10,427 INFO L231 Difference]: Finished difference. Result has 42 places, 16 transitions, 67 flow [2022-12-13 20:45:10,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=67, PETRI_PLACES=42, PETRI_TRANSITIONS=16} [2022-12-13 20:45:10,427 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-12-13 20:45:10,427 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 16 transitions, 67 flow [2022-12-13 20:45:10,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.2) internal successors, (1131), 5 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:10,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:45:10,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:45:10,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 20:45:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:45:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash -371611720, now seen corresponding path program 6 times [2022-12-13 20:45:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:45:10,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582365168] [2022-12-13 20:45:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:45:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:45:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:45:10,997 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 20:45:10,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:45:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582365168] [2022-12-13 20:45:10,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582365168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:45:10,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:45:10,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:45:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025081738] [2022-12-13 20:45:10,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:45:10,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:45:10,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:45:10,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:45:10,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:45:11,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 587 [2022-12-13 20:45:11,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 16 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 230.2) internal successors, (1151), 5 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:11,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:45:11,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 587 [2022-12-13 20:45:11,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:45:11,492 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2022-12-13 20:45:11,492 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 20:45:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 87. Up to 10 conditions per place. [2022-12-13 20:45:11,492 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2022-12-13 20:45:11,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 20 transitions, 114 flow [2022-12-13 20:45:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:45:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:45:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1383 transitions. [2022-12-13 20:45:11,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39267461669505965 [2022-12-13 20:45:11,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1383 transitions. [2022-12-13 20:45:11,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1383 transitions. [2022-12-13 20:45:11,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:45:11,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1383 transitions. [2022-12-13 20:45:11,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:11,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:11,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:11,499 INFO L175 Difference]: Start difference. First operand has 42 places, 16 transitions, 67 flow. Second operand 6 states and 1383 transitions. [2022-12-13 20:45:11,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 20 transitions, 114 flow [2022-12-13 20:45:11,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 20:45:11,500 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2022-12-13 20:45:11,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2022-12-13 20:45:11,500 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2022-12-13 20:45:11,501 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2022-12-13 20:45:11,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.2) internal successors, (1151), 5 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-12-13 20:45:11,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2022-12-13 20:45:11,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2022-12-13 20:45:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:45:11,504 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:45:11,507 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:45:11,507 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:45:11,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:45:11 BasicIcfg [2022-12-13 20:45:11,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:45:11,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:45:11,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:45:11,510 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:45:11,510 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:44:54" (3/4) ... [2022-12-13 20:45:11,512 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:45:11,517 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 20:45:11,517 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 20:45:11,517 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 20:45:11,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-13 20:45:11,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 20:45:11,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 20:45:11,520 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:45:11,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:45:11,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:45:11,543 INFO L158 Benchmark]: Toolchain (without parser) took 18114.55ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 110.4MB in the beginning and 105.9MB in the end (delta: 4.5MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,543 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:45:11,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.96ms. Allocated memory is still 146.8MB. Free memory was 109.9MB in the beginning and 98.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.27ms. Allocated memory is still 146.8MB. Free memory was 98.6MB in the beginning and 96.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,544 INFO L158 Benchmark]: Boogie Preprocessor took 19.97ms. Allocated memory is still 146.8MB. Free memory was 96.1MB in the beginning and 94.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,544 INFO L158 Benchmark]: RCFGBuilder took 492.25ms. Allocated memory is still 146.8MB. Free memory was 94.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,544 INFO L158 Benchmark]: TraceAbstraction took 17298.87ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 73.0MB in the beginning and 110.1MB in the end (delta: -37.1MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,545 INFO L158 Benchmark]: Witness Printer took 33.51ms. Allocated memory is still 211.8MB. Free memory was 110.1MB in the beginning and 105.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:45:11,546 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 100.7MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.96ms. Allocated memory is still 146.8MB. Free memory was 109.9MB in the beginning and 98.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.27ms. Allocated memory is still 146.8MB. Free memory was 98.6MB in the beginning and 96.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.97ms. Allocated memory is still 146.8MB. Free memory was 96.1MB in the beginning and 94.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 492.25ms. Allocated memory is still 146.8MB. Free memory was 94.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 17298.87ms. Allocated memory was 146.8MB in the beginning and 211.8MB in the end (delta: 65.0MB). Free memory was 73.0MB in the beginning and 110.1MB in the end (delta: -37.1MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Witness Printer took 33.51ms. Allocated memory is still 211.8MB. Free memory was 110.1MB in the beginning and 105.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9s, 247 PlacesBefore, 39 PlacesAfterwards, 256 TransitionsBefore, 29 TransitionsAfterwards, 20400 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 164 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 60 ConcurrentYvCompositions, 19 ChoiceCompositions, 323 TotalNumberOfCompositions, 19198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19198, independent: 19198, independent conditional: 0, independent unconditional: 19198, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12430, independent: 12430, independent conditional: 0, independent unconditional: 12430, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19198, independent: 6768, independent conditional: 0, independent unconditional: 6768, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 12430, unknown conditional: 0, unknown unconditional: 12430] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 83]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 384 locations, 17 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: 17.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1863 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1109 mSDsluCounter, 543 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 379 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2171 IncrementalHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 164 mSDtfsCounter, 2171 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=9, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 20:45:11,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_593a4cb0-f598-478c-b73b-728de9fb5384/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE