./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:39:04,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:39:04,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:39:04,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:39:04,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:39:04,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:39:04,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:39:04,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:39:04,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:39:04,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:39:04,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:39:04,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:39:04,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:39:04,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:39:04,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:39:04,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:39:04,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:39:04,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:39:04,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:39:05,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:39:05,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:39:05,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:39:05,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:39:05,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:39:05,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:39:05,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:39:05,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:39:05,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:39:05,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:39:05,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:39:05,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:39:05,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:39:05,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:39:05,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:39:05,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:39:05,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:39:05,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:39:05,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:39:05,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:39:05,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:39:05,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:39:05,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:39:05,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:39:05,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:39:05,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:39:05,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:39:05,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:39:05,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:39:05,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:39:05,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:39:05,089 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:39:05,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:39:05,090 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:39:05,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:39:05,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:39:05,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:39:05,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:39:05,092 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:39:05,092 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:39:05,093 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:39:05,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:39:05,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:39:05,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:39:05,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:39:05,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:39:05,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:39:05,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:39:05,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:39:05,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:39:05,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:39:05,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:39:05,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:39:05,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:39:05,098 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:39:05,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:39:05,099 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_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-11-25 17:39:05,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:39:05,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:39:05,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:39:05,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:39:05,513 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:39:05,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-11-25 17:39:09,197 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:39:09,568 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:39:09,569 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/sv-benchmarks/c/pthread/stateful01-1.i [2022-11-25 17:39:09,600 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data/a299d5c55/067430daeee941479d302077f7eb0622/FLAGb0c98c7d9 [2022-11-25 17:39:09,618 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data/a299d5c55/067430daeee941479d302077f7eb0622 [2022-11-25 17:39:09,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:39:09,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:39:09,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:39:09,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:39:09,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:39:09,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:39:09" (1/1) ... [2022-11-25 17:39:09,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f07425e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:09, skipping insertion in model container [2022-11-25 17:39:09,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:39:09" (1/1) ... [2022-11-25 17:39:09,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:39:09,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:39:10,092 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_8afe605e-fc58-4f3d-9837-0f9f758b20b5/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-25 17:39:10,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:39:10,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:39:10,165 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_8afe605e-fc58-4f3d-9837-0f9f758b20b5/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-25 17:39:10,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:39:10,212 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:39:10,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10 WrapperNode [2022-11-25 17:39:10,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:39:10,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:39:10,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:39:10,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:39:10,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,298 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-25 17:39:10,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:39:10,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:39:10,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:39:10,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:39:10,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:39:10,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:39:10,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:39:10,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:39:10,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (1/1) ... [2022-11-25 17:39:10,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:39:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:39:10,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:39:10,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:39:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:39:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:39:10,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:39:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:39:10,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:39:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:39:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:39:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:39:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:39:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:39:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:39:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:39:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:39:10,473 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:39:10,638 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:39:10,641 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:39:11,093 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:39:11,103 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:39:11,103 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:39:11,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:11 BoogieIcfgContainer [2022-11-25 17:39:11,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:39:11,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:39:11,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:39:11,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:39:11,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:39:09" (1/3) ... [2022-11-25 17:39:11,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c695ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:39:11, skipping insertion in model container [2022-11-25 17:39:11,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:10" (2/3) ... [2022-11-25 17:39:11,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c695ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:39:11, skipping insertion in model container [2022-11-25 17:39:11,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:11" (3/3) ... [2022-11-25 17:39:11,120 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-11-25 17:39:11,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:39:11,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 17:39:11,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:39:11,235 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:39:11,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 105 transitions, 226 flow [2022-11-25 17:39:11,362 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-11-25 17:39:11,363 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:39:11,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 1/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-11-25 17:39:11,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 105 transitions, 226 flow [2022-11-25 17:39:11,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 98 transitions, 208 flow [2022-11-25 17:39:11,379 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:39:11,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 98 transitions, 208 flow [2022-11-25 17:39:11,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 98 transitions, 208 flow [2022-11-25 17:39:11,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 208 flow [2022-11-25 17:39:11,446 INFO L130 PetriNetUnfolder]: 1/98 cut-off events. [2022-11-25 17:39:11,447 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:39:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 1/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-11-25 17:39:11,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2022-11-25 17:39:17,503 INFO L134 LiptonReduction]: Checked pairs total: 3225 [2022-11-25 17:39:17,504 INFO L136 LiptonReduction]: Total number of compositions: 87 [2022-11-25 17:39:17,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:39:17,553 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;@38000d74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:39:17,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-25 17:39:17,557 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:39:17,559 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:17,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:17,560 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:39:17,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash 361, now seen corresponding path program 1 times [2022-11-25 17:39:17,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:17,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117497731] [2022-11-25 17:39:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117497731] [2022-11-25 17:39:17,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117497731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:17,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:17,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:39:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012574657] [2022-11-25 17:39:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:17,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:39:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:17,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:39:17,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:39:17,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 192 [2022-11-25 17:39:17,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:17,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:17,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 192 [2022-11-25 17:39:17,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:17,912 INFO L130 PetriNetUnfolder]: 161/361 cut-off events. [2022-11-25 17:39:17,913 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:39:17,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 361 events. 161/361 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1657 event pairs, 161 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 608. Up to 302 conditions per place. [2022-11-25 17:39:17,919 INFO L137 encePairwiseOnDemand]: 190/192 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2022-11-25 17:39:17,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 120 flow [2022-11-25 17:39:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:39:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:39:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 224 transitions. [2022-11-25 17:39:17,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-11-25 17:39:17,938 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 224 transitions. [2022-11-25 17:39:17,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 224 transitions. [2022-11-25 17:39:17,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:17,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 224 transitions. [2022-11-25 17:39:17,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:17,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:17,954 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:17,956 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 2 states and 224 transitions. [2022-11-25 17:39:17,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 120 flow [2022-11-25 17:39:17,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:39:17,963 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 64 flow [2022-11-25 17:39:17,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-11-25 17:39:17,970 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-11-25 17:39:17,971 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 64 flow [2022-11-25 17:39:17,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:17,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:17,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:39:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:39:17,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 353716, now seen corresponding path program 1 times [2022-11-25 17:39:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:17,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314289527] [2022-11-25 17:39:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314289527] [2022-11-25 17:39:18,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314289527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:18,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:18,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:39:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123448371] [2022-11-25 17:39:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:18,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:18,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 192 [2022-11-25 17:39:18,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:18,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 192 [2022-11-25 17:39:18,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:18,470 INFO L130 PetriNetUnfolder]: 153/340 cut-off events. [2022-11-25 17:39:18,470 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:18,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 340 events. 153/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1534 event pairs, 153 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 630. Up to 282 conditions per place. [2022-11-25 17:39:18,474 INFO L137 encePairwiseOnDemand]: 188/192 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-11-25 17:39:18,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2022-11-25 17:39:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2022-11-25 17:39:18,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2022-11-25 17:39:18,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2022-11-25 17:39:18,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2022-11-25 17:39:18,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:18,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2022-11-25 17:39:18,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,486 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 64 flow. Second operand 3 states and 294 transitions. [2022-11-25 17:39:18,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2022-11-25 17:39:18,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:39:18,488 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2022-11-25 17:39:18,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-11-25 17:39:18,489 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-11-25 17:39:18,490 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2022-11-25 17:39:18,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:18,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:39:18,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:39:18,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash 353714, now seen corresponding path program 1 times [2022-11-25 17:39:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:18,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768438294] [2022-11-25 17:39:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:18,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:18,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768438294] [2022-11-25 17:39:18,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768438294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:18,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:18,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:39:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010846932] [2022-11-25 17:39:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:18,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 192 [2022-11-25 17:39:18,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:18,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 192 [2022-11-25 17:39:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:18,790 INFO L130 PetriNetUnfolder]: 145/319 cut-off events. [2022-11-25 17:39:18,790 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:18,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 319 events. 145/319 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 145 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 593. Up to 264 conditions per place. [2022-11-25 17:39:18,793 INFO L137 encePairwiseOnDemand]: 188/192 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2022-11-25 17:39:18,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 100 flow [2022-11-25 17:39:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2022-11-25 17:39:18,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2022-11-25 17:39:18,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2022-11-25 17:39:18,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2022-11-25 17:39:18,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:18,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2022-11-25 17:39:18,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,803 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 304 transitions. [2022-11-25 17:39:18,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 100 flow [2022-11-25 17:39:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:18,805 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2022-11-25 17:39:18,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-11-25 17:39:18,806 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2022-11-25 17:39:18,806 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2022-11-25 17:39:18,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:18,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:18,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:39:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:39:18,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash 339927912, now seen corresponding path program 1 times [2022-11-25 17:39:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:18,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55837710] [2022-11-25 17:39:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:18,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:19,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:19,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55837710] [2022-11-25 17:39:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55837710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:19,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:19,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:39:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464127060] [2022-11-25 17:39:19,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:19,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:39:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:39:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:39:19,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 192 [2022-11-25 17:39:19,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:19,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 192 [2022-11-25 17:39:19,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:19,261 INFO L130 PetriNetUnfolder]: 107/245 cut-off events. [2022-11-25 17:39:19,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:19,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 245 events. 107/245 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 999 event pairs, 107 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 457. Up to 202 conditions per place. [2022-11-25 17:39:19,268 INFO L137 encePairwiseOnDemand]: 189/192 looper letters, 17 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2022-11-25 17:39:19,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 96 flow [2022-11-25 17:39:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2022-11-25 17:39:19,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2022-11-25 17:39:19,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2022-11-25 17:39:19,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2022-11-25 17:39:19,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:19,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2022-11-25 17:39:19,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,291 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 296 transitions. [2022-11-25 17:39:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 96 flow [2022-11-25 17:39:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:19,293 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2022-11-25 17:39:19,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2022-11-25 17:39:19,296 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-11-25 17:39:19,296 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2022-11-25 17:39:19,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,297 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:19,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:39:19,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:39:19,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash 339927911, now seen corresponding path program 1 times [2022-11-25 17:39:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:19,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313904611] [2022-11-25 17:39:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:19,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:19,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313904611] [2022-11-25 17:39:19,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313904611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:19,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:19,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:39:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184210492] [2022-11-25 17:39:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:39:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:39:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:39:19,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 192 [2022-11-25 17:39:19,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:19,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 192 [2022-11-25 17:39:19,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:19,666 INFO L130 PetriNetUnfolder]: 69/171 cut-off events. [2022-11-25 17:39:19,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:19,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 171 events. 69/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 627 event pairs, 69 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 321. Up to 140 conditions per place. [2022-11-25 17:39:19,670 INFO L137 encePairwiseOnDemand]: 189/192 looper letters, 16 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2022-11-25 17:39:19,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2022-11-25 17:39:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-11-25 17:39:19,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4809027777777778 [2022-11-25 17:39:19,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-11-25 17:39:19,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-11-25 17:39:19,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:19,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-11-25 17:39:19,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,701 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 277 transitions. [2022-11-25 17:39:19,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2022-11-25 17:39:19,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:19,704 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2022-11-25 17:39:19,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-11-25 17:39:19,708 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-11-25 17:39:19,708 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2022-11-25 17:39:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:19,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:19,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:39:19,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1584795383, now seen corresponding path program 1 times [2022-11-25 17:39:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:19,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066500046] [2022-11-25 17:39:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:19,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:19,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066500046] [2022-11-25 17:39:19,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066500046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:19,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:19,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:39:19,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822619977] [2022-11-25 17:39:19,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:19,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:19,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 192 [2022-11-25 17:39:19,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:19,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:19,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 192 [2022-11-25 17:39:19,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:20,014 INFO L130 PetriNetUnfolder]: 64/178 cut-off events. [2022-11-25 17:39:20,014 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:39:20,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 178 events. 64/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 589 event pairs, 24 based on Foata normal form. 32/210 useless extension candidates. Maximal degree in co-relation 351. Up to 104 conditions per place. [2022-11-25 17:39:20,016 INFO L137 encePairwiseOnDemand]: 184/192 looper letters, 19 selfloop transitions, 8 changer transitions 0/29 dead transitions. [2022-11-25 17:39:20,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 122 flow [2022-11-25 17:39:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2022-11-25 17:39:20,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5121527777777778 [2022-11-25 17:39:20,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2022-11-25 17:39:20,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2022-11-25 17:39:20,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:20,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2022-11-25 17:39:20,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,024 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 295 transitions. [2022-11-25 17:39:20,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 122 flow [2022-11-25 17:39:20,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:20,026 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 68 flow [2022-11-25 17:39:20,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-11-25 17:39:20,027 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-11-25 17:39:20,027 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 68 flow [2022-11-25 17:39:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:20,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:20,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:39:20,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1120799443, now seen corresponding path program 2 times [2022-11-25 17:39:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:20,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737121148] [2022-11-25 17:39:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:20,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:20,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737121148] [2022-11-25 17:39:20,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737121148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:20,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:20,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:39:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373485145] [2022-11-25 17:39:20,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:20,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:39:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:39:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:39:20,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 192 [2022-11-25 17:39:20,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 68 flow. Second operand has 9 states, 9 states have (on average 87.11111111111111) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:20,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 192 [2022-11-25 17:39:20,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:20,959 INFO L130 PetriNetUnfolder]: 66/203 cut-off events. [2022-11-25 17:39:20,959 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 17:39:20,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 203 events. 66/203 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 753 event pairs, 12 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 452. Up to 98 conditions per place. [2022-11-25 17:39:20,961 INFO L137 encePairwiseOnDemand]: 183/192 looper letters, 43 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2022-11-25 17:39:20,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 58 transitions, 260 flow [2022-11-25 17:39:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:39:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:39:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 820 transitions. [2022-11-25 17:39:20,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2022-11-25 17:39:20,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 820 transitions. [2022-11-25 17:39:20,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 820 transitions. [2022-11-25 17:39:20,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:20,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 820 transitions. [2022-11-25 17:39:20,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.11111111111111) internal successors, (820), 9 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,980 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,980 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 68 flow. Second operand 9 states and 820 transitions. [2022-11-25 17:39:20,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 58 transitions, 260 flow [2022-11-25 17:39:20,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:39:20,986 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 133 flow [2022-11-25 17:39:20,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2022-11-25 17:39:20,987 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-11-25 17:39:20,987 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 133 flow [2022-11-25 17:39:20,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.11111111111111) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:20,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:20,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:20,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:39:20,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1791790701, now seen corresponding path program 1 times [2022-11-25 17:39:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:20,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921139793] [2022-11-25 17:39:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:39:21,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:39:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:39:21,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:39:21,130 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:39:21,131 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-25 17:39:21,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-25 17:39:21,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-25 17:39:21,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-25 17:39:21,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-25 17:39:21,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-25 17:39:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-25 17:39:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-25 17:39:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-25 17:39:21,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-25 17:39:21,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-25 17:39:21,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-25 17:39:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:39:21,138 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:21,144 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:39:21,144 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:39:21,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:39:21 BasicIcfg [2022-11-25 17:39:21,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:39:21,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:39:21,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:39:21,208 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:39:21,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:11" (3/4) ... [2022-11-25 17:39:21,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:39:21,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:39:21,216 INFO L158 Benchmark]: Toolchain (without parser) took 11593.03ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 100.4MB in the beginning and 139.6MB in the end (delta: -39.2MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-11-25 17:39:21,217 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory was 44.3MB in the beginning and 44.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:21,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.02ms. Allocated memory is still 146.8MB. Free memory was 100.4MB in the beginning and 80.7MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:39:21,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.77ms. Allocated memory is still 146.8MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:39:21,218 INFO L158 Benchmark]: Boogie Preprocessor took 65.47ms. Allocated memory is still 146.8MB. Free memory was 78.7MB in the beginning and 77.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:39:21,219 INFO L158 Benchmark]: RCFGBuilder took 741.39ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 77.3MB in the beginning and 166.0MB in the end (delta: -88.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-11-25 17:39:21,220 INFO L158 Benchmark]: TraceAbstraction took 10096.39ms. Allocated memory is still 197.1MB. Free memory was 164.9MB in the beginning and 140.7MB in the end (delta: 24.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2022-11-25 17:39:21,220 INFO L158 Benchmark]: Witness Printer took 7.71ms. Allocated memory is still 197.1MB. Free memory was 140.7MB in the beginning and 139.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:21,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory was 44.3MB in the beginning and 44.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.02ms. Allocated memory is still 146.8MB. Free memory was 100.4MB in the beginning and 80.7MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.77ms. Allocated memory is still 146.8MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.47ms. Allocated memory is still 146.8MB. Free memory was 78.7MB in the beginning and 77.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 741.39ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 77.3MB in the beginning and 166.0MB in the end (delta: -88.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10096.39ms. Allocated memory is still 197.1MB. Free memory was 164.9MB in the beginning and 140.7MB in the end (delta: 24.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Witness Printer took 7.71ms. Allocated memory is still 197.1MB. Free memory was 140.7MB in the beginning and 139.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 104 PlacesBefore, 39 PlacesAfterwards, 98 TransitionsBefore, 32 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 87 TotalNumberOfCompositions, 3225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1805, independent: 1644, independent conditional: 0, independent unconditional: 1644, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 673, independent: 641, independent conditional: 0, independent unconditional: 641, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 673, independent: 630, independent conditional: 0, independent unconditional: 630, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 123, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1805, independent: 1003, independent conditional: 0, independent unconditional: 1003, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 673, unknown conditional: 0, unknown unconditional: 673] , Statistics on independence cache: Total cache size (in pairs): 202, Positive cache size: 184, Positive conditional cache size: 0, Positive unconditional cache size: 184, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 727]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 727. Possible FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L723] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={6:0}, t2={5:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 135 locations, 12 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: 9.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 747 IncrementalHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 29 mSDtfsCounter, 747 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=7, InterpolantAutomatonStates: 26, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:39:21,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:39:24,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:39:24,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:39:24,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:39:24,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:39:24,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:39:24,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:39:24,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:39:24,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:39:24,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:39:24,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:39:24,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:39:24,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:39:24,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:39:24,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:39:24,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:39:24,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:39:24,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:39:24,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:39:24,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:39:24,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:39:24,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:39:24,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:39:24,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:39:24,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:39:24,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:39:24,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:39:24,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:39:24,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:39:24,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:39:24,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:39:24,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:39:24,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:39:24,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:39:24,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:39:24,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:39:24,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:39:24,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:39:24,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:39:24,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:39:24,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:39:24,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:39:24,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:39:24,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:39:24,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:39:24,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:39:24,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:39:24,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:39:24,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:39:24,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:39:24,505 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:39:24,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:39:24,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:39:24,506 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:39:24,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:39:24,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:39:24,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:39:24,508 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:39:24,508 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:39:24,508 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:39:24,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:39:24,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:39:24,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:39:24,510 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:39:24,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:39:24,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:39:24,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:39:24,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:39:24,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:39:24,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:39:24,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:39:24,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:39:24,513 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:39:24,513 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:39:24,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:39:24,514 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:39:24,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:39:24,515 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:39:24,515 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_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-11-25 17:39:24,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:39:25,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:39:25,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:39:25,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:39:25,022 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:39:25,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/stateful01-1.i [2022-11-25 17:39:29,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:39:29,514 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:39:29,515 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/sv-benchmarks/c/pthread/stateful01-1.i [2022-11-25 17:39:29,537 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data/43aff2d3f/e3930c2dd6a14b7ab4cf1c6289dadbd1/FLAG778ef0699 [2022-11-25 17:39:29,592 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/data/43aff2d3f/e3930c2dd6a14b7ab4cf1c6289dadbd1 [2022-11-25 17:39:29,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:39:29,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:39:29,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:39:29,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:39:29,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:39:29,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:39:29" (1/1) ... [2022-11-25 17:39:29,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471678bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:29, skipping insertion in model container [2022-11-25 17:39:29,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:39:29" (1/1) ... [2022-11-25 17:39:29,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:39:29,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:39:30,220 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_8afe605e-fc58-4f3d-9837-0f9f758b20b5/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-25 17:39:30,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:39:30,246 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:39:30,323 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_8afe605e-fc58-4f3d-9837-0f9f758b20b5/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2022-11-25 17:39:30,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:39:30,394 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:39:30,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30 WrapperNode [2022-11-25 17:39:30,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:39:30,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:39:30,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:39:30,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:39:30,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,464 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-11-25 17:39:30,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:39:30,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:39:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:39:30,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:39:30,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,507 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:39:30,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:39:30,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:39:30,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:39:30,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (1/1) ... [2022-11-25 17:39:30,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:39:30,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:39:30,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:39:30,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:39:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:39:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:39:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:39:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:39:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:39:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:39:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:39:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:39:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:39:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:39:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:39:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-25 17:39:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:39:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:39:30,626 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:39:30,839 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:39:30,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:39:31,233 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:39:31,242 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:39:31,243 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:39:31,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:31 BoogieIcfgContainer [2022-11-25 17:39:31,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:39:31,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:39:31,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:39:31,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:39:31,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:39:29" (1/3) ... [2022-11-25 17:39:31,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6c6975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:39:31, skipping insertion in model container [2022-11-25 17:39:31,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:39:30" (2/3) ... [2022-11-25 17:39:31,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6c6975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:39:31, skipping insertion in model container [2022-11-25 17:39:31,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:31" (3/3) ... [2022-11-25 17:39:31,258 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-11-25 17:39:31,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:39:31,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 17:39:31,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:39:31,506 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:39:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 106 transitions, 228 flow [2022-11-25 17:39:31,684 INFO L130 PetriNetUnfolder]: 1/104 cut-off events. [2022-11-25 17:39:31,686 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:39:31,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 1/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-11-25 17:39:31,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 106 transitions, 228 flow [2022-11-25 17:39:31,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 99 transitions, 210 flow [2022-11-25 17:39:31,703 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:39:31,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 99 transitions, 210 flow [2022-11-25 17:39:31,748 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 99 transitions, 210 flow [2022-11-25 17:39:31,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 99 transitions, 210 flow [2022-11-25 17:39:31,815 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2022-11-25 17:39:31,817 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:39:31,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 1/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-11-25 17:39:31,819 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2022-11-25 17:39:47,622 INFO L134 LiptonReduction]: Checked pairs total: 3655 [2022-11-25 17:39:47,622 INFO L136 LiptonReduction]: Total number of compositions: 91 [2022-11-25 17:39:47,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:39:47,652 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;@a519108, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:39:47,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-25 17:39:47,656 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 17:39:47,657 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:47,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:47,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:39:47,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash 368, now seen corresponding path program 1 times [2022-11-25 17:39:47,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:47,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985833540] [2022-11-25 17:39:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:47,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:47,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:47,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:39:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:47,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:39:47,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:47,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:39:47,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:47,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985833540] [2022-11-25 17:39:47,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985833540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:47,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:47,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:39:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221060873] [2022-11-25 17:39:47,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:39:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:39:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:39:47,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2022-11-25 17:39:47,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:47,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:47,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2022-11-25 17:39:47,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:48,115 INFO L130 PetriNetUnfolder]: 161/361 cut-off events. [2022-11-25 17:39:48,115 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:39:48,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 361 events. 161/361 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1677 event pairs, 161 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 608. Up to 302 conditions per place. [2022-11-25 17:39:48,122 INFO L137 encePairwiseOnDemand]: 195/197 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2022-11-25 17:39:48,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 120 flow [2022-11-25 17:39:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:39:48,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:39:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 226 transitions. [2022-11-25 17:39:48,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5736040609137056 [2022-11-25 17:39:48,167 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 226 transitions. [2022-11-25 17:39:48,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 226 transitions. [2022-11-25 17:39:48,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:48,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 226 transitions. [2022-11-25 17:39:48,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:48,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:48,212 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:48,214 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 2 states and 226 transitions. [2022-11-25 17:39:48,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 120 flow [2022-11-25 17:39:48,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:39:48,221 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 64 flow [2022-11-25 17:39:48,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-11-25 17:39:48,232 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-11-25 17:39:48,233 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 64 flow [2022-11-25 17:39:48,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:48,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:48,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:39:48,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:48,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:48,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:48,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:48,457 INFO L85 PathProgramCache]: Analyzing trace with hash 360511, now seen corresponding path program 1 times [2022-11-25 17:39:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:48,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794817217] [2022-11-25 17:39:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:48,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:48,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 17:39:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:48,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:39:48,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:48,786 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:39:48,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-25 17:39:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:48,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:39:48,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:48,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794817217] [2022-11-25 17:39:48,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794817217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:48,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:48,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:39:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184207437] [2022-11-25 17:39:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:48,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:48,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 197 [2022-11-25 17:39:48,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:48,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:48,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 197 [2022-11-25 17:39:48,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:49,109 INFO L130 PetriNetUnfolder]: 153/340 cut-off events. [2022-11-25 17:39:49,110 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:49,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 340 events. 153/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1532 event pairs, 153 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 630. Up to 282 conditions per place. [2022-11-25 17:39:49,115 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-11-25 17:39:49,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2022-11-25 17:39:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2022-11-25 17:39:49,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5025380710659898 [2022-11-25 17:39:49,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2022-11-25 17:39:49,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2022-11-25 17:39:49,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:49,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2022-11-25 17:39:49,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,129 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 64 flow. Second operand 3 states and 297 transitions. [2022-11-25 17:39:49,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2022-11-25 17:39:49,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:39:49,130 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2022-11-25 17:39:49,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-11-25 17:39:49,141 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-11-25 17:39:49,141 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2022-11-25 17:39:49,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:49,142 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:39:49,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:49,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash 360510, now seen corresponding path program 1 times [2022-11-25 17:39:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800879491] [2022-11-25 17:39:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:49,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:49,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:49,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:49,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 17:39:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:49,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:39:49,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:49,526 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:39:49,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 17:39:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:49,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:39:49,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:49,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800879491] [2022-11-25 17:39:49,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800879491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:49,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:49,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:39:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049827751] [2022-11-25 17:39:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:49,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:49,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 197 [2022-11-25 17:39:49,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:49,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 197 [2022-11-25 17:39:49,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:49,827 INFO L130 PetriNetUnfolder]: 145/319 cut-off events. [2022-11-25 17:39:49,828 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:49,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 319 events. 145/319 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1407 event pairs, 145 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 593. Up to 264 conditions per place. [2022-11-25 17:39:49,834 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2022-11-25 17:39:49,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 100 flow [2022-11-25 17:39:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-11-25 17:39:49,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5194585448392555 [2022-11-25 17:39:49,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-11-25 17:39:49,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-11-25 17:39:49,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:49,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-11-25 17:39:49,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,849 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 307 transitions. [2022-11-25 17:39:49,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 100 flow [2022-11-25 17:39:49,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:49,851 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2022-11-25 17:39:49,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-11-25 17:39:49,852 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2022-11-25 17:39:49,853 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2022-11-25 17:39:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:49,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:49,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:39:49,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:50,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:50,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 346457009, now seen corresponding path program 1 times [2022-11-25 17:39:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:50,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307256462] [2022-11-25 17:39:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:50,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:50,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:50,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 17:39:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:50,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:39:50,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:50,227 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:50,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 17:39:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:50,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:39:50,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307256462] [2022-11-25 17:39:50,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307256462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:50,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:50,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:39:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498003784] [2022-11-25 17:39:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:50,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:50,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:50,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 197 [2022-11-25 17:39:50,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:50,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:50,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 197 [2022-11-25 17:39:50,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:50,493 INFO L130 PetriNetUnfolder]: 107/245 cut-off events. [2022-11-25 17:39:50,493 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:50,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 245 events. 107/245 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 990 event pairs, 107 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 457. Up to 202 conditions per place. [2022-11-25 17:39:50,495 INFO L137 encePairwiseOnDemand]: 194/197 looper letters, 17 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2022-11-25 17:39:50,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 96 flow [2022-11-25 17:39:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2022-11-25 17:39:50,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5160744500846024 [2022-11-25 17:39:50,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2022-11-25 17:39:50,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2022-11-25 17:39:50,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:50,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2022-11-25 17:39:50,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:50,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:50,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:50,514 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 305 transitions. [2022-11-25 17:39:50,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 96 flow [2022-11-25 17:39:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:50,516 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2022-11-25 17:39:50,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2022-11-25 17:39:50,517 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-11-25 17:39:50,517 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2022-11-25 17:39:50,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:50,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:50,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:39:50,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:50,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:50,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash 346457011, now seen corresponding path program 1 times [2022-11-25 17:39:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:50,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703864257] [2022-11-25 17:39:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:50,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:50,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:50,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 17:39:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:50,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:39:50,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:50,919 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:39:50,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 17:39:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:50,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:39:50,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:50,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703864257] [2022-11-25 17:39:50,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703864257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:50,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:50,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:39:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156270855] [2022-11-25 17:39:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:50,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:50,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:50,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:50,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:51,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 197 [2022-11-25 17:39:51,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:51,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 197 [2022-11-25 17:39:51,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:51,172 INFO L130 PetriNetUnfolder]: 69/171 cut-off events. [2022-11-25 17:39:51,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:39:51,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 171 events. 69/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 627 event pairs, 69 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 321. Up to 140 conditions per place. [2022-11-25 17:39:51,175 INFO L137 encePairwiseOnDemand]: 194/197 looper letters, 16 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2022-11-25 17:39:51,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2022-11-25 17:39:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-11-25 17:39:51,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.494077834179357 [2022-11-25 17:39:51,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-11-25 17:39:51,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-11-25 17:39:51,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:51,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-11-25 17:39:51,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,183 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 292 transitions. [2022-11-25 17:39:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2022-11-25 17:39:51,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:51,187 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2022-11-25 17:39:51,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-11-25 17:39:51,191 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-11-25 17:39:51,191 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2022-11-25 17:39:51,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:51,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:51,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:51,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:51,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:51,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1241207849, now seen corresponding path program 1 times [2022-11-25 17:39:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:51,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295250124] [2022-11-25 17:39:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:51,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:51,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:51,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:51,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 17:39:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:51,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:39:51,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:51,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-25 17:39:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:51,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:39:51,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:51,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295250124] [2022-11-25 17:39:51,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295250124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:51,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:51,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:39:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825312639] [2022-11-25 17:39:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:39:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:39:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:39:51,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 197 [2022-11-25 17:39:51,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:51,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 197 [2022-11-25 17:39:51,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:51,805 INFO L130 PetriNetUnfolder]: 64/178 cut-off events. [2022-11-25 17:39:51,806 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:39:51,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 178 events. 64/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 591 event pairs, 24 based on Foata normal form. 32/210 useless extension candidates. Maximal degree in co-relation 351. Up to 104 conditions per place. [2022-11-25 17:39:51,808 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 19 selfloop transitions, 8 changer transitions 0/29 dead transitions. [2022-11-25 17:39:51,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 122 flow [2022-11-25 17:39:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:39:51,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:39:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2022-11-25 17:39:51,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5042301184433164 [2022-11-25 17:39:51,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2022-11-25 17:39:51,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2022-11-25 17:39:51,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:51,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2022-11-25 17:39:51,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,817 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 298 transitions. [2022-11-25 17:39:51,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 122 flow [2022-11-25 17:39:51,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:51,818 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 68 flow [2022-11-25 17:39:51,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-11-25 17:39:51,822 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-11-25 17:39:51,822 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 68 flow [2022-11-25 17:39:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:51,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:51,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:51,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:52,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:52,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-25 17:39:52,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:52,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1023453005, now seen corresponding path program 1 times [2022-11-25 17:39:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:52,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251675808] [2022-11-25 17:39:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:52,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:52,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:52,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:39:52,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 17:39:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:39:52,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:39:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:39:52,345 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:39:52,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:39:52,347 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-25 17:39:52,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-25 17:39:52,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-25 17:39:52,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-25 17:39:52,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-25 17:39:52,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-25 17:39:52,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-25 17:39:52,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-25 17:39:52,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-25 17:39:52,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-25 17:39:52,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-25 17:39:52,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-25 17:39:52,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:39:52,563 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:52,569 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:39:52,570 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:39:52,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:39:52 BasicIcfg [2022-11-25 17:39:52,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:39:52,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:39:52,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:39:52,674 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:39:52,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:39:31" (3/4) ... [2022-11-25 17:39:52,679 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:39:52,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:39:52,681 INFO L158 Benchmark]: Toolchain (without parser) took 23083.31ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 61.5MB in the beginning and 42.2MB in the end (delta: 19.3MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2022-11-25 17:39:52,682 INFO L158 Benchmark]: CDTParser took 0.89ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:52,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 807.16ms. Allocated memory is still 79.7MB. Free memory was 61.2MB in the beginning and 58.9MB in the end (delta: 2.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-11-25 17:39:52,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.16ms. Allocated memory is still 79.7MB. Free memory was 58.9MB in the beginning and 56.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:39:52,686 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 79.7MB. Free memory was 56.9MB in the beginning and 55.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:52,693 INFO L158 Benchmark]: RCFGBuilder took 733.42ms. Allocated memory is still 79.7MB. Free memory was 55.2MB in the beginning and 38.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:39:52,694 INFO L158 Benchmark]: TraceAbstraction took 21423.68ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 37.4MB in the beginning and 43.0MB in the end (delta: -5.6MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-11-25 17:39:52,698 INFO L158 Benchmark]: Witness Printer took 5.82ms. Allocated memory is still 96.5MB. Free memory was 43.0MB in the beginning and 42.2MB in the end (delta: 823.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:52,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 37.2MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 807.16ms. Allocated memory is still 79.7MB. Free memory was 61.2MB in the beginning and 58.9MB in the end (delta: 2.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.16ms. Allocated memory is still 79.7MB. Free memory was 58.9MB in the beginning and 56.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 79.7MB. Free memory was 56.9MB in the beginning and 55.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 733.42ms. Allocated memory is still 79.7MB. Free memory was 55.2MB in the beginning and 38.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 21423.68ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 37.4MB in the beginning and 43.0MB in the end (delta: -5.6MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Witness Printer took 5.82ms. Allocated memory is still 96.5MB. Free memory was 43.0MB in the beginning and 42.2MB in the end (delta: 823.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.9s, 105 PlacesBefore, 39 PlacesAfterwards, 99 TransitionsBefore, 32 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 3655 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2257, independent: 2068, independent conditional: 0, independent unconditional: 2068, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 706, independent: 674, independent conditional: 0, independent unconditional: 674, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 706, independent: 662, independent conditional: 0, independent unconditional: 662, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 215, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2257, independent: 1394, independent conditional: 0, independent unconditional: 1394, dependent: 157, dependent conditional: 0, dependent unconditional: 157, unknown: 706, unknown conditional: 0, unknown unconditional: 706] , Statistics on independence cache: Total cache size (in pairs): 225, Positive cache size: 207, Positive conditional cache size: 0, Positive unconditional cache size: 207, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 727]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 727. Possible FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={7:0}, t2={15:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={7:0}, t2={15:0}] [L723] 0 \read(t1) VAL [\read(t1)=0, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}, t1={7:0}, t2={15:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={15:0}] [L724] 0 \read(t2) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={15:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={15:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={7:0}, t2={15:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 12 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: 21.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 315 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 312 IncrementalHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 16 mSDtfsCounter, 312 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 150 SizeOfPredicates, 4 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:39:52,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8afe605e-fc58-4f3d-9837-0f9f758b20b5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample