./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:20:57,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:20:57,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:20:57,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:20:57,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:20:57,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:20:57,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:20:57,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:20:57,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:20:57,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:20:57,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:20:57,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:20:57,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:20:57,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:20:57,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:20:57,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:20:57,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:20:57,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:20:57,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:20:57,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:20:57,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:20:57,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:20:57,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:20:57,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:20:57,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:20:57,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:20:57,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:20:57,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:20:57,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:20:57,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:20:57,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:20:57,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:20:57,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:20:57,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:20:57,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:20:57,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:20:57,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:20:57,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:20:57,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:20:57,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:20:57,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:20:57,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 02:20:57,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:20:57,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:20:57,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:20:57,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:20:57,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:20:57,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:20:57,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:20:57,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:20:57,176 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:20:57,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:20:57,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:20:57,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:20:57,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:20:57,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:20:57,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:20:57,179 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:20:57,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:20:57,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:20:57,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:20:57,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:20:57,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:20:57,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:20:57,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:20:57,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:20:57,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:20:57,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:20:57,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:20:57,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:20:57,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:20:57,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:20:57,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:20:57,184 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:20:57,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:20:57,185 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_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd [2022-11-23 02:20:57,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:20:57,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:20:57,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:20:57,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:20:57,524 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:20:57,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-wmm/safe029_tso.i [2022-11-23 02:21:00,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:21:01,271 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:21:01,271 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/sv-benchmarks/c/pthread-wmm/safe029_tso.i [2022-11-23 02:21:01,296 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/data/2ab7973c6/ee86d8e8db0849e9923767fc8f7d0d98/FLAG31e5ea489 [2022-11-23 02:21:01,314 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/data/2ab7973c6/ee86d8e8db0849e9923767fc8f7d0d98 [2022-11-23 02:21:01,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:21:01,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:21:01,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:21:01,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:21:01,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:21:01,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:01" (1/1) ... [2022-11-23 02:21:01,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551670d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:01, skipping insertion in model container [2022-11-23 02:21:01,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:01" (1/1) ... [2022-11-23 02:21:01,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:21:01,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:21:01,685 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_87d2869a-94f2-4555-b213-6676b4c18c4b/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2022-11-23 02:21:01,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:21:01,994 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:21:02,010 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_87d2869a-94f2-4555-b213-6676b4c18c4b/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2022-11-23 02:21:02,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:21:02,117 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:21:02,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02 WrapperNode [2022-11-23 02:21:02,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:21:02,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:21:02,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:21:02,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:21:02,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,188 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-23 02:21:02,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:21:02,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:21:02,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:21:02,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:21:02,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,233 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:21:02,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:21:02,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:21:02,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:21:02,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (1/1) ... [2022-11-23 02:21:02,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:21:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:21:02,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:21:02,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:21:02,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:21:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:21:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:21:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:21:02,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:21:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 02:21:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 02:21:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 02:21:02,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 02:21:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:21:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:21:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:21:02,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:21:02,339 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:21:02,514 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:21:02,516 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:21:02,718 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:21:02,725 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:21:02,726 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:21:02,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:02 BoogieIcfgContainer [2022-11-23 02:21:02,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:21:02,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:21:02,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:21:02,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:21:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:01" (1/3) ... [2022-11-23 02:21:02,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c69dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:02, skipping insertion in model container [2022-11-23 02:21:02,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:02" (2/3) ... [2022-11-23 02:21:02,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c69dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:02, skipping insertion in model container [2022-11-23 02:21:02,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:02" (3/3) ... [2022-11-23 02:21:02,775 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2022-11-23 02:21:02,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:21:02,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 02:21:02,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:21:02,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:21:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 81 transitions, 172 flow [2022-11-23 02:21:03,026 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2022-11-23 02:21:03,027 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:21:03,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2022-11-23 02:21:03,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 81 transitions, 172 flow [2022-11-23 02:21:03,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 74 transitions, 154 flow [2022-11-23 02:21:03,050 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:21:03,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 74 transitions, 154 flow [2022-11-23 02:21:03,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 74 transitions, 154 flow [2022-11-23 02:21:03,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 154 flow [2022-11-23 02:21:03,128 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2022-11-23 02:21:03,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:21:03,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-11-23 02:21:03,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 852 [2022-11-23 02:21:06,716 INFO L134 LiptonReduction]: Checked pairs total: 1765 [2022-11-23 02:21:06,716 INFO L136 LiptonReduction]: Total number of compositions: 82 [2022-11-23 02:21:06,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:21:06,756 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;@9d940fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:21:06,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 02:21:06,759 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-23 02:21:06,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:21:06,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:06,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 02:21:06,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash 293, now seen corresponding path program 1 times [2022-11-23 02:21:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:06,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652460809] [2022-11-23 02:21:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:06,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:06,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652460809] [2022-11-23 02:21:06,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652460809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:06,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:06,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 02:21:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134278929] [2022-11-23 02:21:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:21:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:21:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:21:06,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2022-11-23 02:21:06,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 40 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:06,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:06,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2022-11-23 02:21:06,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:07,056 INFO L130 PetriNetUnfolder]: 44/92 cut-off events. [2022-11-23 02:21:07,056 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:21:07,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 92 events. 44/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 311 event pairs, 44 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 181. Up to 88 conditions per place. [2022-11-23 02:21:07,061 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 11 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2022-11-23 02:21:07,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 54 flow [2022-11-23 02:21:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:21:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:21:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2022-11-23 02:21:07,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5122699386503068 [2022-11-23 02:21:07,084 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2022-11-23 02:21:07,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2022-11-23 02:21:07,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:07,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2022-11-23 02:21:07,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,106 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,109 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 40 flow. Second operand 2 states and 167 transitions. [2022-11-23 02:21:07,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 54 flow [2022-11-23 02:21:07,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:21:07,115 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 30 flow [2022-11-23 02:21:07,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-11-23 02:21:07,122 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -5 predicate places. [2022-11-23 02:21:07,123 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 30 flow [2022-11-23 02:21:07,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:07,124 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:21:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:21:07,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:07,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:07,136 INFO L85 PathProgramCache]: Analyzing trace with hash 32183467, now seen corresponding path program 1 times [2022-11-23 02:21:07,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:07,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51577258] [2022-11-23 02:21:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51577258] [2022-11-23 02:21:07,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51577258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:07,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:07,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:21:07,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179710529] [2022-11-23 02:21:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:07,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:21:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:07,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:21:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:21:07,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2022-11-23 02:21:07,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:07,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2022-11-23 02:21:07,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:07,942 INFO L130 PetriNetUnfolder]: 32/69 cut-off events. [2022-11-23 02:21:07,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:21:07,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 69 events. 32/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 197 event pairs, 21 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 143. Up to 62 conditions per place. [2022-11-23 02:21:07,945 INFO L137 encePairwiseOnDemand]: 160/163 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2022-11-23 02:21:07,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 56 flow [2022-11-23 02:21:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:21:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:21:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2022-11-23 02:21:07,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4187116564417178 [2022-11-23 02:21:07,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 273 transitions. [2022-11-23 02:21:07,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 273 transitions. [2022-11-23 02:21:07,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:07,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 273 transitions. [2022-11-23 02:21:07,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,964 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 30 flow. Second operand 4 states and 273 transitions. [2022-11-23 02:21:07,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 56 flow [2022-11-23 02:21:07,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:21:07,965 INFO L231 Difference]: Finished difference. Result has 21 places, 12 transitions, 32 flow [2022-11-23 02:21:07,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=32, PETRI_PLACES=21, PETRI_TRANSITIONS=12} [2022-11-23 02:21:07,967 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 02:21:07,967 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 12 transitions, 32 flow [2022-11-23 02:21:07,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:07,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:07,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:21:07,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:21:07,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 32183461, now seen corresponding path program 1 times [2022-11-23 02:21:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:07,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818542912] [2022-11-23 02:21:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:08,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:08,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818542912] [2022-11-23 02:21:08,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818542912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:08,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:08,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:21:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973805860] [2022-11-23 02:21:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:21:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:21:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:21:08,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 163 [2022-11-23 02:21:08,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 12 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:08,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 163 [2022-11-23 02:21:08,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:08,361 INFO L130 PetriNetUnfolder]: 63/131 cut-off events. [2022-11-23 02:21:08,361 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:21:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 131 events. 63/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 456 event pairs, 33 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 277. Up to 85 conditions per place. [2022-11-23 02:21:08,364 INFO L137 encePairwiseOnDemand]: 157/163 looper letters, 16 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2022-11-23 02:21:08,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 96 flow [2022-11-23 02:21:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:21:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:21:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-11-23 02:21:08,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47443762781186094 [2022-11-23 02:21:08,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2022-11-23 02:21:08,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2022-11-23 02:21:08,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:08,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2022-11-23 02:21:08,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,371 INFO L175 Difference]: Start difference. First operand has 21 places, 12 transitions, 32 flow. Second operand 3 states and 232 transitions. [2022-11-23 02:21:08,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 21 transitions, 96 flow [2022-11-23 02:21:08,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:21:08,373 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 67 flow [2022-11-23 02:21:08,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2022-11-23 02:21:08,375 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2022-11-23 02:21:08,376 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 67 flow [2022-11-23 02:21:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:08,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:08,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:21:08,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:08,378 INFO L85 PathProgramCache]: Analyzing trace with hash 997685878, now seen corresponding path program 1 times [2022-11-23 02:21:08,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:08,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502163862] [2022-11-23 02:21:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:08,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502163862] [2022-11-23 02:21:08,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502163862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:08,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:08,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:21:08,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893567918] [2022-11-23 02:21:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:21:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:21:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:21:08,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 163 [2022-11-23 02:21:08,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:08,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 163 [2022-11-23 02:21:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:08,622 INFO L130 PetriNetUnfolder]: 50/115 cut-off events. [2022-11-23 02:21:08,623 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-23 02:21:08,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 115 events. 50/115 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 388 event pairs, 14 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 333. Up to 89 conditions per place. [2022-11-23 02:21:08,625 INFO L137 encePairwiseOnDemand]: 159/163 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2022-11-23 02:21:08,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 134 flow [2022-11-23 02:21:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:21:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:21:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-11-23 02:21:08,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48466257668711654 [2022-11-23 02:21:08,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-11-23 02:21:08,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-11-23 02:21:08,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:08,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-11-23 02:21:08,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,631 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 67 flow. Second operand 3 states and 237 transitions. [2022-11-23 02:21:08,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 134 flow [2022-11-23 02:21:08,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 22 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:21:08,634 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 83 flow [2022-11-23 02:21:08,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2022-11-23 02:21:08,635 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2022-11-23 02:21:08,635 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 83 flow [2022-11-23 02:21:08,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:08,636 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:21:08,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:08,638 INFO L85 PathProgramCache]: Analyzing trace with hash 997685940, now seen corresponding path program 1 times [2022-11-23 02:21:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:08,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256446894] [2022-11-23 02:21:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:08,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:08,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256446894] [2022-11-23 02:21:08,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256446894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:08,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:08,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:21:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292919599] [2022-11-23 02:21:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:08,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:21:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:21:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:21:08,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 163 [2022-11-23 02:21:08,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:08,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 163 [2022-11-23 02:21:08,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:08,881 INFO L130 PetriNetUnfolder]: 61/135 cut-off events. [2022-11-23 02:21:08,882 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-23 02:21:08,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 135 events. 61/135 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 457 event pairs, 1 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 379. Up to 48 conditions per place. [2022-11-23 02:21:08,890 INFO L137 encePairwiseOnDemand]: 157/163 looper letters, 21 selfloop transitions, 10 changer transitions 0/31 dead transitions. [2022-11-23 02:21:08,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 181 flow [2022-11-23 02:21:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:21:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:21:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2022-11-23 02:21:08,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44785276073619634 [2022-11-23 02:21:08,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 365 transitions. [2022-11-23 02:21:08,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 365 transitions. [2022-11-23 02:21:08,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:08,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 365 transitions. [2022-11-23 02:21:08,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,899 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,899 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 83 flow. Second operand 5 states and 365 transitions. [2022-11-23 02:21:08,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 181 flow [2022-11-23 02:21:08,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:21:08,903 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 113 flow [2022-11-23 02:21:08,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2022-11-23 02:21:08,907 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2022-11-23 02:21:08,907 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 113 flow [2022-11-23 02:21:08,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:08,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:08,908 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:08,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:21:08,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:08,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:08,910 INFO L85 PathProgramCache]: Analyzing trace with hash 863489795, now seen corresponding path program 1 times [2022-11-23 02:21:08,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:08,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805448805] [2022-11-23 02:21:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:08,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:09,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805448805] [2022-11-23 02:21:09,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805448805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:09,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:09,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:21:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457401931] [2022-11-23 02:21:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:21:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:21:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:21:09,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 163 [2022-11-23 02:21:09,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:09,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 163 [2022-11-23 02:21:09,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:09,148 INFO L130 PetriNetUnfolder]: 27/90 cut-off events. [2022-11-23 02:21:09,149 INFO L131 PetriNetUnfolder]: For 89/94 co-relation queries the response was YES. [2022-11-23 02:21:09,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 90 events. 27/90 cut-off events. For 89/94 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 362 event pairs, 4 based on Foata normal form. 7/96 useless extension candidates. Maximal degree in co-relation 269. Up to 39 conditions per place. [2022-11-23 02:21:09,150 INFO L137 encePairwiseOnDemand]: 158/163 looper letters, 15 selfloop transitions, 3 changer transitions 17/39 dead transitions. [2022-11-23 02:21:09,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 268 flow [2022-11-23 02:21:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:21:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:21:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2022-11-23 02:21:09,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47484662576687114 [2022-11-23 02:21:09,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2022-11-23 02:21:09,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2022-11-23 02:21:09,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:09,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2022-11-23 02:21:09,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,159 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 113 flow. Second operand 5 states and 387 transitions. [2022-11-23 02:21:09,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 268 flow [2022-11-23 02:21:09,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 258 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-23 02:21:09,162 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 115 flow [2022-11-23 02:21:09,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2022-11-23 02:21:09,164 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2022-11-23 02:21:09,164 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 115 flow [2022-11-23 02:21:09,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:21:09,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:21:09,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:21:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:21:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1537379714, now seen corresponding path program 1 times [2022-11-23 02:21:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:21:09,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597694595] [2022-11-23 02:21:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:21:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:21:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:21:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:21:09,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:21:09,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597694595] [2022-11-23 02:21:09,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597694595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:21:09,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:21:09,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:21:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553707922] [2022-11-23 02:21:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:21:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:21:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:21:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:21:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:21:09,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 163 [2022-11-23 02:21:09,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:21:09,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 163 [2022-11-23 02:21:09,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:21:09,354 INFO L130 PetriNetUnfolder]: 12/47 cut-off events. [2022-11-23 02:21:09,354 INFO L131 PetriNetUnfolder]: For 66/72 co-relation queries the response was YES. [2022-11-23 02:21:09,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 47 events. 12/47 cut-off events. For 66/72 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 2 based on Foata normal form. 6/52 useless extension candidates. Maximal degree in co-relation 181. Up to 25 conditions per place. [2022-11-23 02:21:09,355 INFO L137 encePairwiseOnDemand]: 158/163 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2022-11-23 02:21:09,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 194 flow [2022-11-23 02:21:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:21:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:21:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 453 transitions. [2022-11-23 02:21:09,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46319018404907975 [2022-11-23 02:21:09,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 453 transitions. [2022-11-23 02:21:09,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 453 transitions. [2022-11-23 02:21:09,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:21:09,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 453 transitions. [2022-11-23 02:21:09,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,363 INFO L175 Difference]: Start difference. First operand has 35 places, 18 transitions, 115 flow. Second operand 6 states and 453 transitions. [2022-11-23 02:21:09,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 194 flow [2022-11-23 02:21:09,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 167 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-23 02:21:09,365 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2022-11-23 02:21:09,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2022-11-23 02:21:09,366 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2022-11-23 02:21:09,367 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2022-11-23 02:21:09,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:21:09,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2022-11-23 02:21:09,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-23 02:21:09,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-11-23 02:21:09,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-23 02:21:09,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2022-11-23 02:21:09,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-23 02:21:09,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-23 02:21:09,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-23 02:21:09,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:21:09,373 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:21:09,377 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:21:09,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:21:09,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:21:09 BasicIcfg [2022-11-23 02:21:09,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:21:09,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:21:09,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:21:09,382 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:21:09,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:02" (3/4) ... [2022-11-23 02:21:09,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:21:09,392 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-23 02:21:09,393 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-23 02:21:09,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-23 02:21:09,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 02:21:09,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 02:21:09,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:21:09,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:21:09,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:21:09,438 INFO L158 Benchmark]: Toolchain (without parser) took 8119.22ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 154.3MB in the beginning and 144.4MB in the end (delta: 9.9MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,439 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory was 76.5MB in the beginning and 76.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:21:09,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 795.23ms. Allocated memory is still 201.3MB. Free memory was 153.8MB in the beginning and 134.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.38ms. Allocated memory is still 201.3MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,440 INFO L158 Benchmark]: Boogie Preprocessor took 57.10ms. Allocated memory is still 201.3MB. Free memory was 132.4MB in the beginning and 130.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,440 INFO L158 Benchmark]: RCFGBuilder took 482.55ms. Allocated memory is still 201.3MB. Free memory was 130.7MB in the beginning and 117.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,440 INFO L158 Benchmark]: TraceAbstraction took 6616.66ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 169.0MB in the beginning and 147.6MB in the end (delta: 21.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,443 INFO L158 Benchmark]: Witness Printer took 56.22ms. Allocated memory is still 243.3MB. Free memory was 147.6MB in the beginning and 144.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:21:09,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory was 76.5MB in the beginning and 76.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 795.23ms. Allocated memory is still 201.3MB. Free memory was 153.8MB in the beginning and 134.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.38ms. Allocated memory is still 201.3MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.10ms. Allocated memory is still 201.3MB. Free memory was 132.4MB in the beginning and 130.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.55ms. Allocated memory is still 201.3MB. Free memory was 130.7MB in the beginning and 117.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6616.66ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 169.0MB in the beginning and 147.6MB in the end (delta: 21.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Witness Printer took 56.22ms. Allocated memory is still 243.3MB. Free memory was 147.6MB in the beginning and 144.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 79 PlacesBefore, 24 PlacesAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 852 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 1765 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1056, independent: 979, independent conditional: 0, independent unconditional: 979, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 653, independent: 615, independent conditional: 0, independent unconditional: 615, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 653, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 187, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1056, independent: 364, independent conditional: 0, independent unconditional: 364, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 653, unknown conditional: 0, unknown unconditional: 653] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 754]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 297 IncrementalHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 21 mSDtfsCounter, 297 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=6, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 02:21:09,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87d2869a-94f2-4555-b213-6676b4c18c4b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE