./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/reorder_2.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_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/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_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/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_f65eb735-6a39-44c9-bf70-7276354f8682/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 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 --- 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 15:34:55,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:34:55,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:34:55,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:34:55,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:34:55,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:34:55,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:34:55,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:34:55,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:34:55,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:34:55,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:34:55,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:34:55,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:34:55,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:34:55,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:34:55,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:34:55,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:34:55,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:34:55,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:34:55,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:34:55,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:34:55,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:34:55,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:34:55,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:34:55,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:34:55,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:34:55,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:34:55,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:34:55,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:34:55,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:34:55,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:34:55,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:34:55,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:34:55,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:34:55,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:34:55,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:34:55,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:34:55,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:34:55,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:34:55,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:34:55,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:34:55,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:34:55,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:34:55,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:34:55,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:34:55,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:34:55,218 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:34:55,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:34:55,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:34:55,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:34:55,220 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:34:55,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:34:55,221 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:34:55,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:34:55,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:34:55,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:34:55,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:34:55,223 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:34:55,223 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:34:55,223 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:34:55,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:34:55,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:34:55,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:34:55,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:34:55,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:34:55,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:34:55,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:34:55,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:34:55,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:34:55,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:34:55,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:34:55,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:34:55,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:34:55,228 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:34:55,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:34:55,229 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_f65eb735-6a39-44c9-bf70-7276354f8682/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 [2022-11-25 15:34:55,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:34:55,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:34:55,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:34:55,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:34:55,524 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:34:55,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/reorder_2.i [2022-11-25 15:34:58,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:34:58,918 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:34:58,919 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/sv-benchmarks/c/pthread/reorder_2.i [2022-11-25 15:34:58,951 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/data/9bfef1d35/b4b5f0caf9fa4dbd8caf4b36059756bc/FLAG21431e16a [2022-11-25 15:34:58,965 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/data/9bfef1d35/b4b5f0caf9fa4dbd8caf4b36059756bc [2022-11-25 15:34:58,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:34:58,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:34:58,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:34:58,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:34:58,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:34:58,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:34:58" (1/1) ... [2022-11-25 15:34:58,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aac3bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:58, skipping insertion in model container [2022-11-25 15:34:58,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:34:58" (1/1) ... [2022-11-25 15:34:58,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:34:59,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:34:59,668 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,677 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,682 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,684 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,686 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,690 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,691 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_f65eb735-6a39-44c9-bf70-7276354f8682/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-25 15:34:59,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:34:59,703 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:34:59,747 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,750 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,752 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,753 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,755 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,758 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 15:34:59,758 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_f65eb735-6a39-44c9-bf70-7276354f8682/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-25 15:34:59,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:34:59,830 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:34:59,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59 WrapperNode [2022-11-25 15:34:59,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:34:59,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:34:59,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:34:59,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:34:59,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,898 INFO L138 Inliner]: procedures = 370, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 135 [2022-11-25 15:34:59,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:34:59,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:34:59,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:34:59,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:34:59,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:34:59,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:34:59,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:34:59,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:34:59,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (1/1) ... [2022-11-25 15:34:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:34:59,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:59,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:34:59,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:35:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:35:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:35:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:35:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-25 15:35:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-25 15:35:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:35:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:35:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-25 15:35:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-25 15:35:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:35:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:35:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:35:00,012 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 15:35:00,154 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:35:00,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:35:00,627 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:35:00,637 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:35:00,637 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 15:35:00,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:35:00 BoogieIcfgContainer [2022-11-25 15:35:00,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:35:00,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:35:00,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:35:00,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:35:00,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:34:58" (1/3) ... [2022-11-25 15:35:00,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75034328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:35:00, skipping insertion in model container [2022-11-25 15:35:00,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:34:59" (2/3) ... [2022-11-25 15:35:00,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75034328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:35:00, skipping insertion in model container [2022-11-25 15:35:00,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:35:00" (3/3) ... [2022-11-25 15:35:00,651 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-11-25 15:35:00,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:35:00,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-25 15:35:00,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:35:00,806 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 15:35:00,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 185 transitions, 392 flow [2022-11-25 15:35:00,982 INFO L130 PetriNetUnfolder]: 35/410 cut-off events. [2022-11-25 15:35:00,987 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:35:00,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 410 events. 35/410 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1688 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-11-25 15:35:00,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 185 transitions, 392 flow [2022-11-25 15:35:01,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 185 transitions, 392 flow [2022-11-25 15:35:01,016 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:35:01,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 185 transitions, 392 flow [2022-11-25 15:35:01,044 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 185 transitions, 392 flow [2022-11-25 15:35:01,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 185 transitions, 392 flow [2022-11-25 15:35:01,131 INFO L130 PetriNetUnfolder]: 35/410 cut-off events. [2022-11-25 15:35:01,131 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:35:01,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 410 events. 35/410 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1688 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-11-25 15:35:01,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 2694 [2022-11-25 15:35:14,285 INFO L134 LiptonReduction]: Checked pairs total: 4574 [2022-11-25 15:35:14,286 INFO L136 LiptonReduction]: Total number of compositions: 201 [2022-11-25 15:35:14,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:35:14,313 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;@40ea1e47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:35:14,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 15:35:14,315 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 15:35:14,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:35:14,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:35:14,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:35:14,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-25 15:35:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash 673, now seen corresponding path program 1 times [2022-11-25 15:35:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:14,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125957473] [2022-11-25 15:35:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:14,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125957473] [2022-11-25 15:35:14,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125957473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:14,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:14,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:35:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147047450] [2022-11-25 15:35:14,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:14,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:35:14,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:14,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:35:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:35:14,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 386 [2022-11-25 15:35:14,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 15:35:14,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:35:14,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 386 [2022-11-25 15:35:14,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:35:14,719 INFO L130 PetriNetUnfolder]: 262/592 cut-off events. [2022-11-25 15:35:14,719 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-25 15:35:14,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 592 events. 262/592 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3130 event pairs, 246 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 884. Up to 532 conditions per place. [2022-11-25 15:35:14,724 INFO L137 encePairwiseOnDemand]: 378/386 looper letters, 32 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2022-11-25 15:35:14,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 174 flow [2022-11-25 15:35:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:35:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:35:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 376 transitions. [2022-11-25 15:35:14,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48704663212435234 [2022-11-25 15:35:14,742 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 376 transitions. [2022-11-25 15:35:14,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 376 transitions. [2022-11-25 15:35:14,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:35:14,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 376 transitions. [2022-11-25 15:35:14,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.0) internal successors, (376), 2 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 15:35:14,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 386.0) internal successors, (1158), 3 states have internal predecessors, (1158), 0 states have call successors, (0), 0 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 15:35:14,757 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 386.0) internal successors, (1158), 3 states have internal predecessors, (1158), 0 states have call successors, (0), 0 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 15:35:14,759 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 126 flow. Second operand 2 states and 376 transitions. [2022-11-25 15:35:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 174 flow [2022-11-25 15:35:14,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:35:14,767 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 110 flow [2022-11-25 15:35:14,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2022-11-25 15:35:14,774 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2022-11-25 15:35:14,774 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 110 flow [2022-11-25 15:35:14,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 15:35:14,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:35:14,775 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:35:14,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:35:14,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-25 15:35:14,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:14,776 INFO L85 PathProgramCache]: Analyzing trace with hash 21348, now seen corresponding path program 1 times [2022-11-25 15:35:14,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:14,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546820184] [2022-11-25 15:35:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:14,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,136 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 15:35:15,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546820184] [2022-11-25 15:35:15,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546820184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:15,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:15,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:35:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119356129] [2022-11-25 15:35:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:35:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:35:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:35:15,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 386 [2022-11-25 15:35:15,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 15:35:15,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:35:15,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 386 [2022-11-25 15:35:15,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:35:15,386 INFO L130 PetriNetUnfolder]: 262/583 cut-off events. [2022-11-25 15:35:15,386 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-25 15:35:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 583 events. 262/583 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3081 event pairs, 214 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 1145. Up to 467 conditions per place. [2022-11-25 15:35:15,391 INFO L137 encePairwiseOnDemand]: 381/386 looper letters, 33 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2022-11-25 15:35:15,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 186 flow [2022-11-25 15:35:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:35:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:35:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2022-11-25 15:35:15,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43955094991364424 [2022-11-25 15:35:15,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2022-11-25 15:35:15,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2022-11-25 15:35:15,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:35:15,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2022-11-25 15:35:15,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 15:35:15,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 15:35:15,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 15:35:15,405 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 110 flow. Second operand 3 states and 509 transitions. [2022-11-25 15:35:15,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 186 flow [2022-11-25 15:35:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:35:15,408 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 112 flow [2022-11-25 15:35:15,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2022-11-25 15:35:15,409 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2022-11-25 15:35:15,410 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 112 flow [2022-11-25 15:35:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 15:35:15,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:35:15,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:35:15,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:35:15,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-25 15:35:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash 21349, now seen corresponding path program 1 times [2022-11-25 15:35:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:15,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531783409] [2022-11-25 15:35:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:15,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531783409] [2022-11-25 15:35:15,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531783409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:15,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:15,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:35:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481745199] [2022-11-25 15:35:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:15,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:35:15,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:15,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:35:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:35:15,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 386 [2022-11-25 15:35:15,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:15,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:35:15,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 386 [2022-11-25 15:35:15,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:35:15,892 INFO L130 PetriNetUnfolder]: 262/574 cut-off events. [2022-11-25 15:35:15,893 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-25 15:35:15,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 574 events. 262/574 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2941 event pairs, 246 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 1169. Up to 531 conditions per place. [2022-11-25 15:35:15,897 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 31 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-11-25 15:35:15,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 172 flow [2022-11-25 15:35:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:35:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:35:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-25 15:35:15,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4464594127806563 [2022-11-25 15:35:15,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-25 15:35:15,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-25 15:35:15,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:35:15,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-25 15:35:15,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 15:35:15,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 15:35:15,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 15:35:15,907 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 112 flow. Second operand 3 states and 517 transitions. [2022-11-25 15:35:15,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 172 flow [2022-11-25 15:35:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:35:15,910 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 104 flow [2022-11-25 15:35:15,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-11-25 15:35:15,911 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2022-11-25 15:35:15,912 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 104 flow [2022-11-25 15:35:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:15,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:35:15,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:35:15,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:35:15,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-25 15:35:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash 21621, now seen corresponding path program 1 times [2022-11-25 15:35:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650477668] [2022-11-25 15:35:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,984 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 15:35:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:15,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650477668] [2022-11-25 15:35:15,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650477668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:15,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:15,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:35:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139684973] [2022-11-25 15:35:15,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:35:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:35:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:35:16,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 386 [2022-11-25 15:35:16,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:16,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:35:16,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 386 [2022-11-25 15:35:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:35:16,223 INFO L130 PetriNetUnfolder]: 244/536 cut-off events. [2022-11-25 15:35:16,224 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-25 15:35:16,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 536 events. 244/536 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2742 event pairs, 196 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 1061. Up to 429 conditions per place. [2022-11-25 15:35:16,227 INFO L137 encePairwiseOnDemand]: 381/386 looper letters, 31 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 15:35:16,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 176 flow [2022-11-25 15:35:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:35:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:35:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2022-11-25 15:35:16,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4430051813471503 [2022-11-25 15:35:16,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2022-11-25 15:35:16,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2022-11-25 15:35:16,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:35:16,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2022-11-25 15:35:16,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 15:35:16,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 15:35:16,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 15:35:16,235 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 104 flow. Second operand 3 states and 513 transitions. [2022-11-25 15:35:16,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 176 flow [2022-11-25 15:35:16,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:35:16,238 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 105 flow [2022-11-25 15:35:16,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-11-25 15:35:16,239 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2022-11-25 15:35:16,239 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 105 flow [2022-11-25 15:35:16,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:35:16,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:35:16,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:35:16,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:35:16,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-25 15:35:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash 21622, now seen corresponding path program 1 times [2022-11-25 15:35:16,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:16,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588196770] [2022-11-25 15:35:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:35:16,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:35:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:35:16,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:35:16,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:35:16,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 29 remaining) [2022-11-25 15:35:16,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (27 of 29 remaining) [2022-11-25 15:35:16,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2022-11-25 15:35:16,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2022-11-25 15:35:16,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2022-11-25 15:35:16,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 29 remaining) [2022-11-25 15:35:16,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2022-11-25 15:35:16,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2022-11-25 15:35:16,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2022-11-25 15:35:16,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2022-11-25 15:35:16,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2022-11-25 15:35:16,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2022-11-25 15:35:16,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2022-11-25 15:35:16,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2022-11-25 15:35:16,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2022-11-25 15:35:16,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2022-11-25 15:35:16,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2022-11-25 15:35:16,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2022-11-25 15:35:16,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 29 remaining) [2022-11-25 15:35:16,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2022-11-25 15:35:16,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2022-11-25 15:35:16,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2022-11-25 15:35:16,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2022-11-25 15:35:16,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2022-11-25 15:35:16,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2022-11-25 15:35:16,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (3 of 29 remaining) [2022-11-25 15:35:16,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 29 remaining) [2022-11-25 15:35:16,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 29 remaining) [2022-11-25 15:35:16,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2022-11-25 15:35:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:35:16,335 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-25 15:35:16,342 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:35:16,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:35:16,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:35:16 BasicIcfg [2022-11-25 15:35:16,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:35:16,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:35:16,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:35:16,365 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:35:16,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:35:00" (3/4) ... [2022-11-25 15:35:16,368 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 15:35:16,405 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:35:16,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:35:16,406 INFO L158 Benchmark]: Toolchain (without parser) took 17436.63ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 110.8MB in the beginning and 104.6MB in the end (delta: 6.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-25 15:35:16,407 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:35:16,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 860.15ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 71.6MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-25 15:35:16,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.44ms. Allocated memory is still 142.6MB. Free memory was 71.6MB in the beginning and 68.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:35:16,408 INFO L158 Benchmark]: Boogie Preprocessor took 45.49ms. Allocated memory is still 142.6MB. Free memory was 68.9MB in the beginning and 67.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:35:16,409 INFO L158 Benchmark]: RCFGBuilder took 695.14ms. Allocated memory is still 142.6MB. Free memory was 67.3MB in the beginning and 46.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 15:35:16,409 INFO L158 Benchmark]: TraceAbstraction took 15720.74ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 46.4MB in the beginning and 106.7MB in the end (delta: -60.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:35:16,409 INFO L158 Benchmark]: Witness Printer took 41.03ms. Allocated memory is still 172.0MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:35:16,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 860.15ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 71.6MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.44ms. Allocated memory is still 142.6MB. Free memory was 71.6MB in the beginning and 68.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.49ms. Allocated memory is still 142.6MB. Free memory was 68.9MB in the beginning and 67.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 695.14ms. Allocated memory is still 142.6MB. Free memory was 67.3MB in the beginning and 46.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 15720.74ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 46.4MB in the beginning and 106.7MB in the end (delta: -60.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.03ms. Allocated memory is still 172.0MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.2s, 175 PlacesBefore, 53 PlacesAfterwards, 185 TransitionsBefore, 52 TransitionsAfterwards, 2694 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 11 ChoiceCompositions, 201 TotalNumberOfCompositions, 4574 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3279, independent: 3239, independent conditional: 0, independent unconditional: 3239, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1944, independent: 1931, independent conditional: 0, independent unconditional: 1931, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1944, independent: 1931, independent conditional: 0, independent unconditional: 1931, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3279, independent: 1308, independent conditional: 0, independent unconditional: 1308, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 1944, unknown conditional: 0, unknown unconditional: 1944] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1236] static int iSet = 2; [L1237] static int iCheck = 2; [L1238] static int a = 0; [L1239] static int b = 0; [L1245] int i, err; [L1246] COND TRUE argc != 1 [L1247] COND FALSE !(argc != 3) [L1255] EXPR \read(iSet) [L1255] pthread_t setPool[iSet]; [L1256] EXPR \read(iCheck) [L1256] pthread_t checkPool[iCheck]; [L1257] i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1073741824, a=0, argc=3, argv={1073741825:1073741826}, argv={1073741825:1073741826}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1257] EXPR \read(iSet) [L1257] COND TRUE i < iSet - UnprovableResult [Line: 1292]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - 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: -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: -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: 1244]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1264]: 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: 1258]: 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, 186 locations, 29 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: 15.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 468 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 89 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! [2022-11-25 15:35:16,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f65eb735-6a39-44c9-bf70-7276354f8682/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)