./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:40:14,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:40:14,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:40:14,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:40:14,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:40:14,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:40:14,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:40:14,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:40:14,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:40:14,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:40:14,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:40:14,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:40:14,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:40:14,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:40:14,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:40:14,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:40:14,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:40:14,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:40:14,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:40:14,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:40:14,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:40:14,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:40:14,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:40:14,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:40:14,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:40:14,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:40:14,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:40:14,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:40:14,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:40:14,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:40:14,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:40:14,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:40:14,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:40:14,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:40:14,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:40:14,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:40:14,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:40:14,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:40:14,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:40:14,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:40:14,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:40:14,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 13:40:14,205 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:40:14,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:40:14,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:40:14,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:40:14,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:40:14,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:40:14,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:40:14,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:40:14,206 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:40:14,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:40:14,207 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:40:14,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:40:14,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:40:14,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:40:14,209 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:40:14,210 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_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 [2022-12-13 13:40:14,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:40:14,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:40:14,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:40:14,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:40:14,387 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:40:14,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-12-13 13:40:16,966 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:40:17,148 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:40:17,148 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i [2022-12-13 13:40:17,159 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/data/6d3b7e983/5387aa5bc2ec40a4a786fb668d1ba44a/FLAG2eaacd1d9 [2022-12-13 13:40:17,171 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/data/6d3b7e983/5387aa5bc2ec40a4a786fb668d1ba44a [2022-12-13 13:40:17,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:40:17,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:40:17,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:40:17,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:40:17,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:40:17,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a45aadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17, skipping insertion in model container [2022-12-13 13:40:17,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:40:17,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:40:17,468 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_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-12-13 13:40:17,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:40:17,495 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:40:17,516 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_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/sv-benchmarks/c/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-12-13 13:40:17,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:40:17,546 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:40:17,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17 WrapperNode [2022-12-13 13:40:17,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:40:17,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:40:17,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:40:17,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:40:17,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,584 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 199 [2022-12-13 13:40:17,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:40:17,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:40:17,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:40:17,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:40:17,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:40:17,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:40:17,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:40:17,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:40:17,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (1/1) ... [2022-12-13 13:40:17,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:40:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:40:17,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:40:17,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:40:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:40:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 13:40:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 13:40:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:40:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:40:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:40:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:40:17,688 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:40:17,782 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:40:17,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:40:18,042 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:40:18,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:40:18,049 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-12-13 13:40:18,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:40:18 BoogieIcfgContainer [2022-12-13 13:40:18,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:40:18,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:40:18,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:40:18,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:40:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:40:17" (1/3) ... [2022-12-13 13:40:18,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b394760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:40:18, skipping insertion in model container [2022-12-13 13:40:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:40:17" (2/3) ... [2022-12-13 13:40:18,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b394760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:40:18, skipping insertion in model container [2022-12-13 13:40:18,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:40:18" (3/3) ... [2022-12-13 13:40:18,059 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2022-12-13 13:40:18,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:40:18,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 13:40:18,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:40:18,156 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 13:40:18,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 462 flow [2022-12-13 13:40:18,302 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2022-12-13 13:40:18,302 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 13:40:18,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 413 events. 58/413 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1909 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-12-13 13:40:18,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 220 transitions, 462 flow [2022-12-13 13:40:18,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 462 flow [2022-12-13 13:40:18,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:40:18,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 220 transitions, 462 flow [2022-12-13 13:40:18,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 220 transitions, 462 flow [2022-12-13 13:40:18,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 462 flow [2022-12-13 13:40:18,402 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2022-12-13 13:40:18,402 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 13:40:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 413 events. 58/413 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1909 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-12-13 13:40:18,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 19608 [2022-12-13 13:40:21,695 INFO L134 LiptonReduction]: Checked pairs total: 37104 [2022-12-13 13:40:21,696 INFO L136 LiptonReduction]: Total number of compositions: 171 [2022-12-13 13:40:21,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:40:21,713 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;@5d3c7163, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:40:21,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 13:40:21,715 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-12-13 13:40:21,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:40:21,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:21,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:40:21,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:40:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:21,721 INFO L85 PathProgramCache]: Analyzing trace with hash 28176, now seen corresponding path program 1 times [2022-12-13 13:40:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:21,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950138551] [2022-12-13 13:40:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:21,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950138551] [2022-12-13 13:40:21,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950138551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:21,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:21,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:40:21,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881986626] [2022-12-13 13:40:21,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:40:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:22,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:40:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:40:22,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 391 [2022-12-13 13:40:22,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 89 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:22,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:22,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 391 [2022-12-13 13:40:22,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:22,875 INFO L130 PetriNetUnfolder]: 6366/10746 cut-off events. [2022-12-13 13:40:22,875 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-12-13 13:40:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20666 conditions, 10746 events. 6366/10746 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 75917 event pairs, 2912 based on Foata normal form. 1380/8787 useless extension candidates. Maximal degree in co-relation 19785. Up to 9766 conditions per place. [2022-12-13 13:40:22,971 INFO L137 encePairwiseOnDemand]: 366/391 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-12-13 13:40:22,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 328 flow [2022-12-13 13:40:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:40:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:40:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2022-12-13 13:40:22,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5515771526001705 [2022-12-13 13:40:22,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2022-12-13 13:40:22,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2022-12-13 13:40:22,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:22,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2022-12-13 13:40:22,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:22,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,001 INFO L175 Difference]: Start difference. First operand has 67 places, 89 transitions, 200 flow. Second operand 3 states and 647 transitions. [2022-12-13 13:40:23,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 328 flow [2022-12-13 13:40:23,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:40:23,008 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 168 flow [2022-12-13 13:40:23,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2022-12-13 13:40:23,012 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2022-12-13 13:40:23,012 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 168 flow [2022-12-13 13:40:23,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:23,013 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:40:23,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:40:23,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:40:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash 28174, now seen corresponding path program 1 times [2022-12-13 13:40:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625493893] [2022-12-13 13:40:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:23,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:23,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625493893] [2022-12-13 13:40:23,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625493893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:23,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:23,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:40:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566124144] [2022-12-13 13:40:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:23,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:40:23,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:40:23,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:40:23,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 391 [2022-12-13 13:40:23,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:23,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 391 [2022-12-13 13:40:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:23,826 INFO L130 PetriNetUnfolder]: 6036/10032 cut-off events. [2022-12-13 13:40:23,826 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-12-13 13:40:23,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19305 conditions, 10032 events. 6036/10032 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68386 event pairs, 4830 based on Foata normal form. 0/6951 useless extension candidates. Maximal degree in co-relation 18513. Up to 7780 conditions per place. [2022-12-13 13:40:23,888 INFO L137 encePairwiseOnDemand]: 386/391 looper letters, 77 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2022-12-13 13:40:23,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 378 flow [2022-12-13 13:40:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:40:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:40:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2022-12-13 13:40:23,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5225916453537937 [2022-12-13 13:40:23,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2022-12-13 13:40:23,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2022-12-13 13:40:23,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:23,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2022-12-13 13:40:23,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,895 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 168 flow. Second operand 3 states and 613 transitions. [2022-12-13 13:40:23,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 378 flow [2022-12-13 13:40:23,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:23,898 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 166 flow [2022-12-13 13:40:23,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2022-12-13 13:40:23,898 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-12-13 13:40:23,898 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 166 flow [2022-12-13 13:40:23,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:23,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:23,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:40:23,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:40:23,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:40:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash 840038896, now seen corresponding path program 1 times [2022-12-13 13:40:23,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:23,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700137350] [2022-12-13 13:40:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:23,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:24,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700137350] [2022-12-13 13:40:24,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700137350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:40:24,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684381473] [2022-12-13 13:40:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:40:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:40:24,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:40:24,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:40:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:24,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:40:24,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:40:24,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:40:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:24,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:40:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:24,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684381473] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:40:24,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:40:24,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 13:40:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582660479] [2022-12-13 13:40:24,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:40:24,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:40:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:40:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:40:24,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 391 [2022-12-13 13:40:24,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 177.875) internal successors, (1423), 8 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:24,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:24,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 391 [2022-12-13 13:40:24,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:40:24,459 INFO L130 PetriNetUnfolder]: 27/89 cut-off events. [2022-12-13 13:40:24,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:40:24,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 89 events. 27/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 14/96 useless extension candidates. Maximal degree in co-relation 190. Up to 54 conditions per place. [2022-12-13 13:40:24,460 INFO L137 encePairwiseOnDemand]: 387/391 looper letters, 29 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-12-13 13:40:24,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 145 flow [2022-12-13 13:40:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:40:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:40:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 737 transitions. [2022-12-13 13:40:24,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47122762148337594 [2022-12-13 13:40:24,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 737 transitions. [2022-12-13 13:40:24,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 737 transitions. [2022-12-13 13:40:24,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:40:24,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 737 transitions. [2022-12-13 13:40:24,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:24,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 391.0) internal successors, (1955), 5 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:24,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 391.0) internal successors, (1955), 5 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:24,467 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 166 flow. Second operand 4 states and 737 transitions. [2022-12-13 13:40:24,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 145 flow [2022-12-13 13:40:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:40:24,469 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 56 flow [2022-12-13 13:40:24,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2022-12-13 13:40:24,470 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -37 predicate places. [2022-12-13 13:40:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 56 flow [2022-12-13 13:40:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.875) internal successors, (1423), 8 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:24,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:24,472 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 13:40:24,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:40:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c031cfd5-1ba4-44f7-a2e0-d89301ce17b8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 13:40:24,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:40:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash 271402645, now seen corresponding path program 1 times [2022-12-13 13:40:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:24,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060449684] [2022-12-13 13:40:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:40:24,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:40:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:40:24,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:40:24,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:40:24,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 13:40:24,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-12-13 13:40:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-12-13 13:40:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-12-13 13:40:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-12-13 13:40:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-12-13 13:40:24,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-12-13 13:40:24,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-12-13 13:40:24,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-12-13 13:40:24,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-12-13 13:40:24,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-12-13 13:40:24,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-12-13 13:40:24,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2022-12-13 13:40:24,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-12-13 13:40:24,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-12-13 13:40:24,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:40:24,724 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 13:40:24,727 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 13:40:24,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 13:40:24,776 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 13:40:24,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 340 transitions, 728 flow [2022-12-13 13:40:25,000 INFO L130 PetriNetUnfolder]: 197/1224 cut-off events. [2022-12-13 13:40:25,000 INFO L131 PetriNetUnfolder]: For 72/85 co-relation queries the response was YES. [2022-12-13 13:40:25,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 1224 events. 197/1224 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7664 event pairs, 1 based on Foata normal form. 0/928 useless extension candidates. Maximal degree in co-relation 738. Up to 32 conditions per place. [2022-12-13 13:40:25,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 340 transitions, 728 flow [2022-12-13 13:40:25,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 340 transitions, 728 flow [2022-12-13 13:40:25,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:40:25,020 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 340 transitions, 728 flow [2022-12-13 13:40:25,020 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 340 transitions, 728 flow [2022-12-13 13:40:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 340 transitions, 728 flow [2022-12-13 13:40:25,224 INFO L130 PetriNetUnfolder]: 197/1224 cut-off events. [2022-12-13 13:40:25,224 INFO L131 PetriNetUnfolder]: For 72/85 co-relation queries the response was YES. [2022-12-13 13:40:25,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 1224 events. 197/1224 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7664 event pairs, 1 based on Foata normal form. 0/928 useless extension candidates. Maximal degree in co-relation 738. Up to 32 conditions per place. [2022-12-13 13:40:25,309 INFO L119 LiptonReduction]: Number of co-enabled transitions 67488 [2022-12-13 13:40:28,760 INFO L134 LiptonReduction]: Checked pairs total: 153131 [2022-12-13 13:40:28,760 INFO L136 LiptonReduction]: Total number of compositions: 252 [2022-12-13 13:40:28,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:40:28,763 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;@5d3c7163, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:40:28,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 13:40:28,765 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 13:40:28,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:40:28,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:40:28,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:40:28,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 13:40:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:40:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash 50878, now seen corresponding path program 1 times [2022-12-13 13:40:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:40:28,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479728238] [2022-12-13 13:40:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:40:28,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:40:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:40:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:40:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:40:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479728238] [2022-12-13 13:40:28,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479728238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:40:28,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:40:28,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:40:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661856429] [2022-12-13 13:40:28,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:40:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:40:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:40:28,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:40:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:40:28,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 592 [2022-12-13 13:40:28,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 153 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:40:28,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:40:28,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 592 [2022-12-13 13:40:28,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand