./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.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_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/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_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/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_dfbb223d-e597-4c31-b541-2c7a092cd4f5/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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- 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 11:39:57,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:39:57,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:39:57,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:39:57,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:39:57,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:39:57,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:39:57,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:39:57,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:39:57,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:39:57,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:39:57,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:39:57,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:39:57,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:39:57,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:39:57,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:39:57,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:39:57,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:39:57,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:39:57,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:39:57,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:39:57,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:39:57,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:39:57,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:39:57,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:39:57,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:39:57,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:39:57,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:39:57,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:39:57,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:39:57,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:39:57,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:39:57,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:39:57,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:39:57,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:39:57,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:39:57,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:39:57,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:39:57,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:39:57,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:39:57,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:39:57,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:39:57,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:39:57,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:39:57,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:39:57,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:39:58,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:39:58,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:39:58,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:39:58,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:39:58,001 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:39:58,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:39:58,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:39:58,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:39:58,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:39:58,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:39:58,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:39:58,002 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:39:58,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:39:58,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:39:58,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:39:58,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:39:58,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:39:58,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:39:58,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:39:58,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:39:58,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:39:58,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:39:58,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:39:58,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:39:58,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:39:58,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:39:58,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:39:58,005 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:39:58,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:39:58,005 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:39:58,005 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_dfbb223d-e597-4c31-b541-2c7a092cd4f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2022-12-13 11:39:58,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:39:58,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:39:58,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:39:58,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:39:58,218 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:39:58,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-12-13 11:40:00,788 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:40:00,950 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:40:00,951 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2022-12-13 11:40:00,959 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/data/88e223072/12f2d30e6019468a94450c2eac31f0ab/FLAG8accaa3d6 [2022-12-13 11:40:00,969 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/data/88e223072/12f2d30e6019468a94450c2eac31f0ab [2022-12-13 11:40:00,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:40:00,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:40:00,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:00,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:40:00,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:40:00,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:00" (1/1) ... [2022-12-13 11:40:00,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ae0758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:00, skipping insertion in model container [2022-12-13 11:40:00,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:00" (1/1) ... [2022-12-13 11:40:00,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:40:01,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:40:01,211 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_dfbb223d-e597-4c31-b541-2c7a092cd4f5/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-12-13 11:40:01,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:01,241 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:40:01,264 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_dfbb223d-e597-4c31-b541-2c7a092cd4f5/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2022-12-13 11:40:01,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:01,295 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:40:01,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01 WrapperNode [2022-12-13 11:40:01,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:01,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:01,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:40:01,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:40:01,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,331 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 200 [2022-12-13 11:40:01,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:01,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:40:01,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:40:01,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:40:01,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:40:01,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:40:01,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:40:01,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:40:01,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (1/1) ... [2022-12-13 11:40:01,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:01,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:01,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:40:01,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:40:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:40:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 11:40:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 11:40:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:40:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:40:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:40:01,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:40:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 11:40:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 11:40:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:40:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:40:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:40:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:40:01,430 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 11:40:01,551 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:40:01,553 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:40:01,749 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:40:01,756 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:40:01,756 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-12-13 11:40:01,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:01 BoogieIcfgContainer [2022-12-13 11:40:01,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:40:01,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:40:01,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:40:01,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:40:01,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:40:00" (1/3) ... [2022-12-13 11:40:01,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136dd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:01, skipping insertion in model container [2022-12-13 11:40:01,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:01" (2/3) ... [2022-12-13 11:40:01,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136dd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:01, skipping insertion in model container [2022-12-13 11:40:01,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:01" (3/3) ... [2022-12-13 11:40:01,763 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2022-12-13 11:40:01,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:40:01,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 11:40:01,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:40:01,846 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 11:40:01,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 222 transitions, 466 flow [2022-12-13 11:40:01,961 INFO L130 PetriNetUnfolder]: 58/415 cut-off events. [2022-12-13 11:40:01,962 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 11:40:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 415 events. 58/415 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1890 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-12-13 11:40:01,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 222 transitions, 466 flow [2022-12-13 11:40:01,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 222 transitions, 466 flow [2022-12-13 11:40:01,977 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:40:01,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 222 transitions, 466 flow [2022-12-13 11:40:01,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 222 transitions, 466 flow [2022-12-13 11:40:01,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 222 transitions, 466 flow [2022-12-13 11:40:02,043 INFO L130 PetriNetUnfolder]: 58/415 cut-off events. [2022-12-13 11:40:02,043 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 11:40:02,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 415 events. 58/415 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1890 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2022-12-13 11:40:02,055 INFO L119 LiptonReduction]: Number of co-enabled transitions 19608 [2022-12-13 11:40:05,276 INFO L134 LiptonReduction]: Checked pairs total: 34398 [2022-12-13 11:40:05,276 INFO L136 LiptonReduction]: Total number of compositions: 173 [2022-12-13 11:40:05,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:40:05,291 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;@280bdf47, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:40:05,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 11:40:05,293 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 11:40:05,293 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:40:05,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:05,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:40:05,294 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 11:40:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash 28361, now seen corresponding path program 1 times [2022-12-13 11:40:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:05,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679369295] [2022-12-13 11:40:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:05,501 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 11:40:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:05,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679369295] [2022-12-13 11:40:05,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679369295] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:05,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:05,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:40:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131031380] [2022-12-13 11:40:05,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:05,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:05,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 395 [2022-12-13 11:40:05,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 89 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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 11:40:05,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:05,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 395 [2022-12-13 11:40:05,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:06,350 INFO L130 PetriNetUnfolder]: 6366/10732 cut-off events. [2022-12-13 11:40:06,350 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-12-13 11:40:06,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20638 conditions, 10732 events. 6366/10732 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 75286 event pairs, 2912 based on Foata normal form. 1380/8773 useless extension candidates. Maximal degree in co-relation 19757. Up to 9766 conditions per place. [2022-12-13 11:40:06,399 INFO L137 encePairwiseOnDemand]: 370/395 looper letters, 68 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2022-12-13 11:40:06,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 328 flow [2022-12-13 11:40:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-12-13 11:40:06,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5510548523206751 [2022-12-13 11:40:06,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-12-13 11:40:06,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-12-13 11:40:06,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:06,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-12-13 11:40:06,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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 11:40:06,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 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 11:40:06,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 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 11:40:06,425 INFO L175 Difference]: Start difference. First operand has 67 places, 89 transitions, 200 flow. Second operand 3 states and 653 transitions. [2022-12-13 11:40:06,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 328 flow [2022-12-13 11:40:06,430 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 11:40:06,431 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 168 flow [2022-12-13 11:40:06,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, 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 11:40:06,435 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2022-12-13 11:40:06,436 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 168 flow [2022-12-13 11:40:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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 11:40:06,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:06,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:40:06,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:40:06,437 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 11:40:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash 28360, now seen corresponding path program 1 times [2022-12-13 11:40:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:06,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104432636] [2022-12-13 11:40:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:06,474 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 11:40:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104432636] [2022-12-13 11:40:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104432636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:06,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:06,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:40:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142208074] [2022-12-13 11:40:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:06,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:06,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 395 [2022-12-13 11:40:06,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 11:40:06,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:06,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 395 [2022-12-13 11:40:06,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:07,222 INFO L130 PetriNetUnfolder]: 6036/10022 cut-off events. [2022-12-13 11:40:07,222 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-12-13 11:40:07,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19285 conditions, 10022 events. 6036/10022 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68092 event pairs, 4830 based on Foata normal form. 0/6941 useless extension candidates. Maximal degree in co-relation 18493. Up to 7780 conditions per place. [2022-12-13 11:40:07,257 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 77 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2022-12-13 11:40:07,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 378 flow [2022-12-13 11:40:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:40:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:40:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2022-12-13 11:40:07,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5223628691983122 [2022-12-13 11:40:07,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2022-12-13 11:40:07,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2022-12-13 11:40:07,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:07,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2022-12-13 11:40:07,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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 11:40:07,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 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 11:40:07,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 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 11:40:07,267 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 168 flow. Second operand 3 states and 619 transitions. [2022-12-13 11:40:07,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 378 flow [2022-12-13 11:40:07,269 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 11:40:07,270 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 166 flow [2022-12-13 11:40:07,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, 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 11:40:07,271 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2022-12-13 11:40:07,271 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 166 flow [2022-12-13 11:40:07,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 11:40:07,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:07,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:40:07,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:40:07,272 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 11:40:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash 845613656, now seen corresponding path program 1 times [2022-12-13 11:40:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:07,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600350947] [2022-12-13 11:40:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:07,386 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 11:40:07,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600350947] [2022-12-13 11:40:07,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600350947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086171134] [2022-12-13 11:40:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:07,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:07,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:07,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:40:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:07,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:40:07,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:07,511 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 11:40:07,548 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 11:40:07,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:40:07,593 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 11:40:07,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086171134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:40:07,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:40:07,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 11:40:07,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717086049] [2022-12-13 11:40:07,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:40:07,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:40:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:40:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:40:07,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 395 [2022-12-13 11:40:07,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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 11:40:07,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:07,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 395 [2022-12-13 11:40:07,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:07,792 INFO L130 PetriNetUnfolder]: 29/92 cut-off events. [2022-12-13 11:40:07,792 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 11:40:07,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 92 events. 29/92 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 5 based on Foata normal form. 14/100 useless extension candidates. Maximal degree in co-relation 188. Up to 54 conditions per place. [2022-12-13 11:40:07,793 INFO L137 encePairwiseOnDemand]: 391/395 looper letters, 29 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-12-13 11:40:07,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 145 flow [2022-12-13 11:40:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:40:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:40:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 745 transitions. [2022-12-13 11:40:07,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47151898734177217 [2022-12-13 11:40:07,796 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 745 transitions. [2022-12-13 11:40:07,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 745 transitions. [2022-12-13 11:40:07,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:07,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 745 transitions. [2022-12-13 11:40:07,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 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 11:40:07,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 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 11:40:07,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 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 11:40:07,812 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 166 flow. Second operand 4 states and 745 transitions. [2022-12-13 11:40:07,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 145 flow [2022-12-13 11:40:07,813 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 11:40:07,814 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 56 flow [2022-12-13 11:40:07,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, 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 11:40:07,815 INFO L288 CegarLoopForPetriNet]: 67 programPoint places, -37 predicate places. [2022-12-13 11:40:07,815 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 56 flow [2022-12-13 11:40:07,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.875) internal successors, (1439), 8 states have internal predecessors, (1439), 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 11:40:07,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:07,816 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:40:07,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:40:08,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfbb223d-e597-4c31-b541-2c7a092cd4f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:08,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 11:40:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash 444220271, now seen corresponding path program 1 times [2022-12-13 11:40:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:08,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940044387] [2022-12-13 11:40:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:40:08,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:40:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:40:08,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:40:08,064 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:40:08,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-13 11:40:08,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-12-13 11:40:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-12-13 11:40:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-12-13 11:40:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-12-13 11:40:08,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-12-13 11:40:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-12-13 11:40:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-12-13 11:40:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-12-13 11:40:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-12-13 11:40:08,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-12-13 11:40:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-12-13 11:40:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2022-12-13 11:40:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-12-13 11:40:08,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-12-13 11:40:08,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:40:08,071 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 11:40:08,074 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:40:08,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:40:08,123 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 11:40:08,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 342 transitions, 732 flow [2022-12-13 11:40:08,322 INFO L130 PetriNetUnfolder]: 197/1226 cut-off events. [2022-12-13 11:40:08,322 INFO L131 PetriNetUnfolder]: For 72/85 co-relation queries the response was YES. [2022-12-13 11:40:08,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 1226 events. 197/1226 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7642 event pairs, 1 based on Foata normal form. 0/930 useless extension candidates. Maximal degree in co-relation 740. Up to 32 conditions per place. [2022-12-13 11:40:08,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 342 transitions, 732 flow [2022-12-13 11:40:08,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 342 transitions, 732 flow [2022-12-13 11:40:08,345 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:40:08,345 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 342 transitions, 732 flow [2022-12-13 11:40:08,345 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 342 transitions, 732 flow [2022-12-13 11:40:08,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 342 transitions, 732 flow [2022-12-13 11:40:08,528 INFO L130 PetriNetUnfolder]: 197/1226 cut-off events. [2022-12-13 11:40:08,528 INFO L131 PetriNetUnfolder]: For 72/85 co-relation queries the response was YES. [2022-12-13 11:40:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 1226 events. 197/1226 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7642 event pairs, 1 based on Foata normal form. 0/930 useless extension candidates. Maximal degree in co-relation 740. Up to 32 conditions per place. [2022-12-13 11:40:08,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 67488 [2022-12-13 11:40:12,063 INFO L134 LiptonReduction]: Checked pairs total: 151822 [2022-12-13 11:40:12,063 INFO L136 LiptonReduction]: Total number of compositions: 253 [2022-12-13 11:40:12,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:40:12,065 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;@280bdf47, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:40:12,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 11:40:12,066 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-12-13 11:40:12,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:40:12,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:40:12,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:40:12,067 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 11:40:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 51177, now seen corresponding path program 1 times [2022-12-13 11:40:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:12,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395078883] [2022-12-13 11:40:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:12,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:12,092 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 11:40:12,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:12,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395078883] [2022-12-13 11:40:12,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395078883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:12,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:40:12,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:40:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953284996] [2022-12-13 11:40:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:12,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:40:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:40:12,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:40:12,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 595 [2022-12-13 11:40:12,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 154 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 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 11:40:12,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:40:12,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 595 [2022-12-13 11:40:12,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand