./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS --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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --- 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-4e7fbc6 [2022-11-23 02:19:45,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:19:45,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:19:45,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:19:45,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:19:45,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:19:45,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:19:45,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:19:45,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:19:45,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:19:45,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:19:45,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:19:45,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:19:45,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:19:45,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:19:45,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:19:45,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:19:45,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:19:45,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:19:45,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:19:45,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:19:45,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:19:45,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:19:45,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:19:45,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:19:45,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:19:45,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:19:45,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:19:45,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:19:45,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:19:45,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:19:45,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:19:45,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:19:45,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:19:45,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:19:45,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:19:45,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:19:45,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:19:45,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:19:45,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:19:45,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:19:45,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 02:19:46,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:19:46,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:19:46,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:19:46,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:19:46,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:19:46,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:19:46,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:19:46,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:19:46,019 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:19:46,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:19:46,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:19:46,019 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:19:46,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:19:46,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:19:46,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:19:46,020 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:19:46,020 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:19:46,020 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:19:46,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:19:46,020 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:19:46,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:19:46,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:19:46,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:19:46,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:19:46,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:19:46,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:19:46,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:19:46,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:19:46,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:19:46,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:19:46,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:19:46,027 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:19:46,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:19:46,027 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_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 [2022-11-23 02:19:46,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:19:46,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:19:46,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:19:46,359 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:19:46,359 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:19:46,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2022-11-23 02:19:49,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:19:49,870 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:19:49,871 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2022-11-23 02:19:49,892 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/data/770b56d7f/3c2c7414fad14f728e2b180ffe996d2a/FLAGc7b4747f6 [2022-11-23 02:19:49,912 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/data/770b56d7f/3c2c7414fad14f728e2b180ffe996d2a [2022-11-23 02:19:49,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:19:49,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:19:49,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:19:49,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:19:49,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:19:49,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:49" (1/1) ... [2022-11-23 02:19:49,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b2eddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:49, skipping insertion in model container [2022-11-23 02:19:49,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:19:49" (1/1) ... [2022-11-23 02:19:49,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:19:50,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:19:50,160 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_e6deb400-f567-4dd1-bc27-10e5f8de8442/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i[993,1006] [2022-11-23 02:19:50,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:19:50,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:19:50,505 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_e6deb400-f567-4dd1-bc27-10e5f8de8442/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i[993,1006] [2022-11-23 02:19:50,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:19:50,634 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:19:50,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50 WrapperNode [2022-11-23 02:19:50,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:19:50,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:19:50,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:19:50,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:19:50,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,726 INFO L138 Inliner]: procedures = 177, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 185 [2022-11-23 02:19:50,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:19:50,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:19:50,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:19:50,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:19:50,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:19:50,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:19:50,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:19:50,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:19:50,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (1/1) ... [2022-11-23 02:19:50,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:19:50,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:19:50,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:19:50,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6deb400-f567-4dd1-bc27-10e5f8de8442/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:19:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:19:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:19:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:19:50,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:19:50,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:19:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:19:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 02:19:50,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 02:19:50,957 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 02:19:50,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 02:19:50,958 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 02:19:50,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 02:19:50,958 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-23 02:19:50,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-23 02:19:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:19:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:19:50,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:19:50,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:19:50,962 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:19:51,156 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:19:51,164 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:19:51,932 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:19:52,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:19:52,670 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:19:52,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:52 BoogieIcfgContainer [2022-11-23 02:19:52,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:19:52,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:19:52,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:19:52,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:19:52,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:19:49" (1/3) ... [2022-11-23 02:19:52,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb47d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:52, skipping insertion in model container [2022-11-23 02:19:52,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:19:50" (2/3) ... [2022-11-23 02:19:52,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb47d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:19:52, skipping insertion in model container [2022-11-23 02:19:52,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:19:52" (3/3) ... [2022-11-23 02:19:52,684 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2022-11-23 02:19:52,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:19:52,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2022-11-23 02:19:52,705 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:19:52,855 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:19:52,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 203 transitions, 426 flow [2022-11-23 02:19:53,053 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2022-11-23 02:19:53,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:19:53,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2022-11-23 02:19:53,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 203 transitions, 426 flow [2022-11-23 02:19:53,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 199 transitions, 410 flow [2022-11-23 02:19:53,078 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:19:53,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 199 transitions, 410 flow [2022-11-23 02:19:53,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 199 transitions, 410 flow [2022-11-23 02:19:53,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 199 transitions, 410 flow [2022-11-23 02:19:53,237 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2022-11-23 02:19:53,238 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:19:53,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 295 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2022-11-23 02:19:53,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 8404 [2022-11-23 02:20:39,289 INFO L134 LiptonReduction]: Checked pairs total: 38135 [2022-11-23 02:20:39,289 INFO L136 LiptonReduction]: Total number of compositions: 201 [2022-11-23 02:20:39,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:20:39,313 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;@1755fef7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:20:39,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-23 02:20:39,316 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-23 02:20:39,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:20:39,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:39,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 02:20:39,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-23 02:20:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:39,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1140, now seen corresponding path program 1 times [2022-11-23 02:20:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752911204] [2022-11-23 02:20:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:39,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:20:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:39,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752911204] [2022-11-23 02:20:39,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752911204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:39,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:39,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 02:20:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844466560] [2022-11-23 02:20:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:39,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:20:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:20:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:20:39,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 404 [2022-11-23 02:20:39,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 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) [2022-11-23 02:20:39,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:20:39,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 404 [2022-11-23 02:20:39,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:20:52,113 INFO L130 PetriNetUnfolder]: 55546/73294 cut-off events. [2022-11-23 02:20:52,113 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-23 02:20:52,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146829 conditions, 73294 events. 55546/73294 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 467282 event pairs, 55546 based on Foata normal form. 0/39108 useless extension candidates. Maximal degree in co-relation 146817. Up to 73248 conditions per place. [2022-11-23 02:20:52,657 INFO L137 encePairwiseOnDemand]: 373/404 looper letters, 48 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2022-11-23 02:20:52,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 212 flow [2022-11-23 02:20:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:20:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:20:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 385 transitions. [2022-11-23 02:20:52,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47648514851485146 [2022-11-23 02:20:52,675 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 385 transitions. [2022-11-23 02:20:52,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 385 transitions. [2022-11-23 02:20:52,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:20:52,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 385 transitions. [2022-11-23 02:20:52,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:52,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:52,693 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:52,695 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 178 flow. Second operand 2 states and 385 transitions. [2022-11-23 02:20:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 212 flow [2022-11-23 02:20:52,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 02:20:52,721 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 112 flow [2022-11-23 02:20:52,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2022-11-23 02:20:52,728 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -33 predicate places. [2022-11-23 02:20:52,728 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 112 flow [2022-11-23 02:20:52,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 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) [2022-11-23 02:20:52,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:20:52,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:20:52,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:20:52,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-23 02:20:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:20:52,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1122821, now seen corresponding path program 1 times [2022-11-23 02:20:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:20:52,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091237919] [2022-11-23 02:20:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:20:52,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:20:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:20:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:20:52,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:20:52,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091237919] [2022-11-23 02:20:52,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091237919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:20:52,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:20:52,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:20:52,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602664889] [2022-11-23 02:20:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:20:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:20:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:20:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:20:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:20:53,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 404 [2022-11-23 02:20:53,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:20:53,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:20:53,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 404 [2022-11-23 02:20:53,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:00,586 INFO L130 PetriNetUnfolder]: 42619/58384 cut-off events. [2022-11-23 02:21:00,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:21:00,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116584 conditions, 58384 events. 42619/58384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 365976 event pairs, 25344 based on Foata normal form. 0/39501 useless extension candidates. Maximal degree in co-relation 116581. Up to 33325 conditions per place. [2022-11-23 02:21:00,912 INFO L137 encePairwiseOnDemand]: 383/404 looper letters, 55 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2022-11-23 02:21:00,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 276 flow [2022-11-23 02:21:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:21:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:21:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-11-23 02:21:00,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41914191419141916 [2022-11-23 02:21:00,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-11-23 02:21:00,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-11-23 02:21:00,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:00,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-11-23 02:21:00,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:00,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:00,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:00,932 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 112 flow. Second operand 3 states and 508 transitions. [2022-11-23 02:21:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 276 flow [2022-11-23 02:21:00,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:21:00,935 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 200 flow [2022-11-23 02:21:00,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2022-11-23 02:21:00,936 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -32 predicate places. [2022-11-23 02:21:00,936 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 200 flow [2022-11-23 02:21:00,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:00,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:00,937 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:21:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:21:00,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-23 02:21:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1122822, now seen corresponding path program 1 times [2022-11-23 02:21:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:00,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775769906] [2022-11-23 02:21:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:01,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775769906] [2022-11-23 02:21:01,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775769906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:01,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:01,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:21:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015000587] [2022-11-23 02:21:01,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:01,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:21:01,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:21:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:21:01,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 404 [2022-11-23 02:21:01,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:01,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:01,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 404 [2022-11-23 02:21:01,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:05,175 INFO L130 PetriNetUnfolder]: 18651/26496 cut-off events. [2022-11-23 02:21:05,175 INFO L131 PetriNetUnfolder]: For 7454/7631 co-relation queries the response was YES. [2022-11-23 02:21:05,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71791 conditions, 26496 events. 18651/26496 cut-off events. For 7454/7631 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 167418 event pairs, 14370 based on Foata normal form. 4974/28574 useless extension candidates. Maximal degree in co-relation 71786. Up to 25102 conditions per place. [2022-11-23 02:21:05,328 INFO L137 encePairwiseOnDemand]: 395/404 looper letters, 45 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2022-11-23 02:21:05,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 276 flow [2022-11-23 02:21:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:21:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:21:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-11-23 02:21:05,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40924092409240925 [2022-11-23 02:21:05,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-11-23 02:21:05,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-11-23 02:21:05,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:05,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-11-23 02:21:05,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:05,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:05,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:05,339 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 200 flow. Second operand 3 states and 496 transitions. [2022-11-23 02:21:05,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 276 flow [2022-11-23 02:21:05,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:21:05,402 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 164 flow [2022-11-23 02:21:05,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-11-23 02:21:05,404 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -40 predicate places. [2022-11-23 02:21:05,404 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 164 flow [2022-11-23 02:21:05,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:05,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:05,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:05,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:21:05,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-23 02:21:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash -362188212, now seen corresponding path program 1 times [2022-11-23 02:21:05,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:05,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523407836] [2022-11-23 02:21:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:05,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523407836] [2022-11-23 02:21:05,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523407836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:05,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:05,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:21:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575064134] [2022-11-23 02:21:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:05,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:21:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:21:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:21:05,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 404 [2022-11-23 02:21:05,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:05,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:05,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 404 [2022-11-23 02:21:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:09,221 INFO L130 PetriNetUnfolder]: 18282/26770 cut-off events. [2022-11-23 02:21:09,221 INFO L131 PetriNetUnfolder]: For 2915/3080 co-relation queries the response was YES. [2022-11-23 02:21:09,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66152 conditions, 26770 events. 18282/26770 cut-off events. For 2915/3080 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 180523 event pairs, 7361 based on Foata normal form. 0/21403 useless extension candidates. Maximal degree in co-relation 66147. Up to 15275 conditions per place. [2022-11-23 02:21:09,379 INFO L137 encePairwiseOnDemand]: 400/404 looper letters, 81 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2022-11-23 02:21:09,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 454 flow [2022-11-23 02:21:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:21:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:21:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-11-23 02:21:09,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43481848184818483 [2022-11-23 02:21:09,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-11-23 02:21:09,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-11-23 02:21:09,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:09,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-11-23 02:21:09,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,389 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 164 flow. Second operand 3 states and 527 transitions. [2022-11-23 02:21:09,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 454 flow [2022-11-23 02:21:09,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:21:09,392 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 176 flow [2022-11-23 02:21:09,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2022-11-23 02:21:09,393 INFO L288 CegarLoopForPetriNet]: 95 programPoint places, -38 predicate places. [2022-11-23 02:21:09,393 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 176 flow [2022-11-23 02:21:09,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:09,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:09,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:21:09,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-23 02:21:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash -362187844, now seen corresponding path program 1 times [2022-11-23 02:21:09,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:09,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218410847] [2022-11-23 02:21:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:09,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:09,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218410847] [2022-11-23 02:21:09,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218410847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:09,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:09,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:21:09,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554107757] [2022-11-23 02:21:09,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:09,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:21:09,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:21:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:21:09,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 404 [2022-11-23 02:21:09,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:09,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 404 [2022-11-23 02:21:09,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand