./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/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_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/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_5bb19d46-6c15-4a39-94cd-92844433fce0/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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- 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 02:41:55,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:41:55,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:41:55,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:41:55,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:41:55,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:41:55,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:41:55,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:41:55,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:41:55,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:41:55,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:41:55,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:41:55,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:41:55,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:41:55,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:41:55,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:41:55,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:41:55,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:41:55,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:41:55,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:41:55,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:41:55,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:41:55,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:41:55,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:41:55,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:41:55,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:41:55,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:41:55,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:41:55,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:41:55,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:41:55,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:41:55,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:41:55,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:41:55,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:41:55,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:41:55,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:41:55,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:41:55,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:41:55,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:41:55,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:41:55,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:41:55,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 02:41:55,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:41:55,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:41:55,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:41:55,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:41:55,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:41:55,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:41:55,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:41:55,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:41:55,963 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:41:55,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:41:55,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:41:55,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:41:55,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:41:55,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:41:55,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:41:55,966 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:41:55,967 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:41:55,967 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:41:55,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:41:55,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:41:55,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:41:55,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:41:55,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:41:55,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:41:55,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:41:55,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:41:55,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:41:55,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:41:55,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:41:55,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:41:55,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:41:55,972 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:41:55,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:41:55,972 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_5bb19d46-6c15-4a39-94cd-92844433fce0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-11-23 02:41:56,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:41:56,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:41:56,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:41:56,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:41:56,286 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:41:56,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-23 02:41:59,516 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:41:59,850 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:41:59,851 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-23 02:41:59,868 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/data/ed74355fd/4e952f6c162944108395130c7caccb7c/FLAG27571cd91 [2022-11-23 02:41:59,886 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/data/ed74355fd/4e952f6c162944108395130c7caccb7c [2022-11-23 02:41:59,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:41:59,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:41:59,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:41:59,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:41:59,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:41:59,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:59" (1/1) ... [2022-11-23 02:41:59,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457d929e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:59, skipping insertion in model container [2022-11-23 02:41:59,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:59" (1/1) ... [2022-11-23 02:41:59,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:41:59,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:42:00,153 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_5bb19d46-6c15-4a39-94cd-92844433fce0/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-23 02:42:00,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:42:00,364 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:42:00,379 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_5bb19d46-6c15-4a39-94cd-92844433fce0/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-23 02:42:00,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:42:00,502 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:42:00,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00 WrapperNode [2022-11-23 02:42:00,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:42:00,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:42:00,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:42:00,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:42:00,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,556 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-11-23 02:42:00,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:42:00,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:42:00,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:42:00,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:42:00,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:42:00,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:42:00,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:42:00,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:42:00,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (1/1) ... [2022-11-23 02:42:00,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:42:00,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:00,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:42:00,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:42:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:42:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-23 02:42:00,732 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-23 02:42:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:42:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:42:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:42:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:42:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:42:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:42:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:42:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:42:00,737 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 02:42:00,950 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:42:00,953 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:42:01,298 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:42:01,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:42:01,307 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 02:42:01,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:01 BoogieIcfgContainer [2022-11-23 02:42:01,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:42:01,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:42:01,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:42:01,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:42:01,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:59" (1/3) ... [2022-11-23 02:42:01,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbba2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:01, skipping insertion in model container [2022-11-23 02:42:01,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:00" (2/3) ... [2022-11-23 02:42:01,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbba2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:01, skipping insertion in model container [2022-11-23 02:42:01,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:01" (3/3) ... [2022-11-23 02:42:01,326 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-23 02:42:01,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:42:01,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-11-23 02:42:01,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:42:01,476 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:42:01,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 168 transitions, 341 flow [2022-11-23 02:42:01,633 INFO L130 PetriNetUnfolder]: 10/167 cut-off events. [2022-11-23 02:42:01,634 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:42:01,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 167 events. 10/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 372 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2022-11-23 02:42:01,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 168 transitions, 341 flow [2022-11-23 02:42:01,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 337 flow [2022-11-23 02:42:01,652 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:42:01,668 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 337 flow [2022-11-23 02:42:01,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 337 flow [2022-11-23 02:42:01,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 337 flow [2022-11-23 02:42:01,783 INFO L130 PetriNetUnfolder]: 10/167 cut-off events. [2022-11-23 02:42:01,789 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:42:01,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 167 events. 10/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 372 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2022-11-23 02:42:01,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 6956 [2022-11-23 02:42:10,942 INFO L134 LiptonReduction]: Checked pairs total: 12405 [2022-11-23 02:42:10,942 INFO L136 LiptonReduction]: Total number of compositions: 195 [2022-11-23 02:42:10,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:42:10,969 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;@473036c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:42:10,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-23 02:42:10,971 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-23 02:42:10,971 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:42:10,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:10,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 02:42:10,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash 680, now seen corresponding path program 1 times [2022-11-23 02:42:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:10,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631992004] [2022-11-23 02:42:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:11,145 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 02:42:11,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631992004] [2022-11-23 02:42:11,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631992004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:11,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:11,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 02:42:11,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223543368] [2022-11-23 02:42:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:11,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:42:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:42:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:42:11,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 363 [2022-11-23 02:42:11,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 101 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 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 02:42:11,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:11,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 363 [2022-11-23 02:42:11,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:11,406 INFO L130 PetriNetUnfolder]: 202/390 cut-off events. [2022-11-23 02:42:11,407 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:42:11,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 390 events. 202/390 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1716 event pairs, 139 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 753. Up to 368 conditions per place. [2022-11-23 02:42:11,416 INFO L137 encePairwiseOnDemand]: 349/363 looper letters, 30 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-11-23 02:42:11,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 133 flow [2022-11-23 02:42:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:42:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:42:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 362 transitions. [2022-11-23 02:42:11,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4986225895316804 [2022-11-23 02:42:11,444 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 362 transitions. [2022-11-23 02:42:11,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 362 transitions. [2022-11-23 02:42:11,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:11,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 362 transitions. [2022-11-23 02:42:11,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 181.0) internal successors, (362), 2 states have internal predecessors, (362), 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 02:42:11,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 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 02:42:11,472 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 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 02:42:11,474 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 101 flow. Second operand 2 states and 362 transitions. [2022-11-23 02:42:11,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 133 flow [2022-11-23 02:42:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:42:11,483 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 72 flow [2022-11-23 02:42:11,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2022-11-23 02:42:11,491 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -14 predicate places. [2022-11-23 02:42:11,491 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 72 flow [2022-11-23 02:42:11,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 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 02:42:11,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:11,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:42:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:42:11,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:11,497 INFO L85 PathProgramCache]: Analyzing trace with hash 20805843, now seen corresponding path program 1 times [2022-11-23 02:42:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:11,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581374508] [2022-11-23 02:42:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:11,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:11,942 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 02:42:11,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:11,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581374508] [2022-11-23 02:42:11,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581374508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:11,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:11,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:42:11,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123089276] [2022-11-23 02:42:11,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:42:12,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 363 [2022-11-23 02:42:12,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 02:42:12,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:12,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 363 [2022-11-23 02:42:12,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:12,198 INFO L130 PetriNetUnfolder]: 185/356 cut-off events. [2022-11-23 02:42:12,198 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:42:12,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 356 events. 185/356 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1513 event pairs, 125 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 693. Up to 335 conditions per place. [2022-11-23 02:42:12,204 INFO L137 encePairwiseOnDemand]: 361/363 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-11-23 02:42:12,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 128 flow [2022-11-23 02:42:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:42:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-23 02:42:12,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2022-11-23 02:42:12,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-23 02:42:12,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-23 02:42:12,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:12,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-23 02:42:12,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 02:42:12,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:12,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:12,218 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 72 flow. Second operand 3 states and 504 transitions. [2022-11-23 02:42:12,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 128 flow [2022-11-23 02:42:12,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:42:12,220 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 72 flow [2022-11-23 02:42:12,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2022-11-23 02:42:12,221 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2022-11-23 02:42:12,222 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 72 flow [2022-11-23 02:42:12,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 02:42:12,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:12,223 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:42:12,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:42:12,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:12,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash 20805807, now seen corresponding path program 1 times [2022-11-23 02:42:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:12,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513403403] [2022-11-23 02:42:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:12,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:12,376 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 02:42:12,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513403403] [2022-11-23 02:42:12,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513403403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:12,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:12,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:42:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024502766] [2022-11-23 02:42:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:12,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:12,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:12,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:12,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:42:12,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 363 [2022-11-23 02:42:12,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 02:42:12,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:12,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 363 [2022-11-23 02:42:12,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:12,567 INFO L130 PetriNetUnfolder]: 168/320 cut-off events. [2022-11-23 02:42:12,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:42:12,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 320 events. 168/320 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1353 event pairs, 97 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 626. Up to 271 conditions per place. [2022-11-23 02:42:12,570 INFO L137 encePairwiseOnDemand]: 360/363 looper letters, 42 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2022-11-23 02:42:12,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 190 flow [2022-11-23 02:42:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:42:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2022-11-23 02:42:12,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46831955922865015 [2022-11-23 02:42:12,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2022-11-23 02:42:12,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2022-11-23 02:42:12,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:12,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2022-11-23 02:42:12,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 02:42:12,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:12,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:12,608 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 72 flow. Second operand 3 states and 510 transitions. [2022-11-23 02:42:12,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 190 flow [2022-11-23 02:42:12,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:42:12,610 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 73 flow [2022-11-23 02:42:12,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2022-11-23 02:42:12,612 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2022-11-23 02:42:12,613 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 73 flow [2022-11-23 02:42:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 02:42:12,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:12,614 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:42:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:42:12,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 20805845, now seen corresponding path program 1 times [2022-11-23 02:42:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:12,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656526572] [2022-11-23 02:42:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:12,803 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 02:42:12,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656526572] [2022-11-23 02:42:12,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656526572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:12,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:12,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:42:12,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10127025] [2022-11-23 02:42:12,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:12,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:42:12,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 363 [2022-11-23 02:42:12,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 02:42:12,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:12,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 363 [2022-11-23 02:42:12,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:13,043 INFO L130 PetriNetUnfolder]: 151/286 cut-off events. [2022-11-23 02:42:13,043 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-23 02:42:13,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 286 events. 151/286 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1142 event pairs, 83 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 576. Up to 239 conditions per place. [2022-11-23 02:42:13,045 INFO L137 encePairwiseOnDemand]: 360/363 looper letters, 41 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-11-23 02:42:13,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 189 flow [2022-11-23 02:42:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:42:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-11-23 02:42:13,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.472910927456382 [2022-11-23 02:42:13,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-11-23 02:42:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-11-23 02:42:13,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:13,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-11-23 02:42:13,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 02:42:13,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:13,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:13,061 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 73 flow. Second operand 3 states and 515 transitions. [2022-11-23 02:42:13,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 189 flow [2022-11-23 02:42:13,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:42:13,069 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 71 flow [2022-11-23 02:42:13,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-11-23 02:42:13,071 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -14 predicate places. [2022-11-23 02:42:13,072 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 71 flow [2022-11-23 02:42:13,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 02:42:13,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:13,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:42:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:42:13,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:13,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 644827990, now seen corresponding path program 1 times [2022-11-23 02:42:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:13,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413228320] [2022-11-23 02:42:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,238 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 02:42:13,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:13,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413228320] [2022-11-23 02:42:13,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413228320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:13,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:13,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:42:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116626688] [2022-11-23 02:42:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:13,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:13,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 363 [2022-11-23 02:42:13,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 02:42:13,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:13,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 363 [2022-11-23 02:42:13,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:13,516 INFO L130 PetriNetUnfolder]: 127/251 cut-off events. [2022-11-23 02:42:13,516 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-23 02:42:13,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 251 events. 127/251 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 981 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 508. Up to 186 conditions per place. [2022-11-23 02:42:13,518 INFO L137 encePairwiseOnDemand]: 344/363 looper letters, 51 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2022-11-23 02:42:13,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 68 transitions, 277 flow [2022-11-23 02:42:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:42:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 793 transitions. [2022-11-23 02:42:13,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4369146005509642 [2022-11-23 02:42:13,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 793 transitions. [2022-11-23 02:42:13,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 793 transitions. [2022-11-23 02:42:13,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:13,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 793 transitions. [2022-11-23 02:42:13,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.6) internal successors, (793), 5 states have internal predecessors, (793), 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 02:42:13,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 363.0) internal successors, (2178), 6 states have internal predecessors, (2178), 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 02:42:13,530 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 363.0) internal successors, (2178), 6 states have internal predecessors, (2178), 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 02:42:13,531 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 71 flow. Second operand 5 states and 793 transitions. [2022-11-23 02:42:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 68 transitions, 277 flow [2022-11-23 02:42:13,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:42:13,533 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 201 flow [2022-11-23 02:42:13,533 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2022-11-23 02:42:13,536 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2022-11-23 02:42:13,536 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 201 flow [2022-11-23 02:42:13,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 02:42:13,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:13,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 02:42:13,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:42:13,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash 644827991, now seen corresponding path program 1 times [2022-11-23 02:42:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:13,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360213883] [2022-11-23 02:42:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:13,664 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 02:42:13,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360213883] [2022-11-23 02:42:13,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360213883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:13,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:13,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:42:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118992371] [2022-11-23 02:42:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:13,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:13,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:13,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 363 [2022-11-23 02:42:13,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 02:42:13,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:13,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 363 [2022-11-23 02:42:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:13,926 INFO L130 PetriNetUnfolder]: 127/242 cut-off events. [2022-11-23 02:42:13,926 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-11-23 02:42:13,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 242 events. 127/242 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 873 event pairs, 1 based on Foata normal form. 9/202 useless extension candidates. Maximal degree in co-relation 655. Up to 227 conditions per place. [2022-11-23 02:42:13,928 INFO L137 encePairwiseOnDemand]: 360/363 looper letters, 46 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-11-23 02:42:13,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 319 flow [2022-11-23 02:42:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:42:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:42:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2022-11-23 02:42:13,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2022-11-23 02:42:13,931 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2022-11-23 02:42:13,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2022-11-23 02:42:13,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:13,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2022-11-23 02:42:13,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 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 02:42:13,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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 02:42:13,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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 02:42:13,937 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 201 flow. Second operand 4 states and 638 transitions. [2022-11-23 02:42:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 319 flow [2022-11-23 02:42:13,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 319 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:42:13,942 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 216 flow [2022-11-23 02:42:13,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-11-23 02:42:13,943 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2022-11-23 02:42:13,943 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 216 flow [2022-11-23 02:42:13,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 02:42:13,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:13,944 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:42:13,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:42:13,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1485165441, now seen corresponding path program 1 times [2022-11-23 02:42:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:13,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469260895] [2022-11-23 02:42:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:14,111 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 02:42:14,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:14,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469260895] [2022-11-23 02:42:14,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469260895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:14,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:14,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:42:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683810834] [2022-11-23 02:42:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:42:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:42:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:42:14,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 363 [2022-11-23 02:42:14,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:14,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:14,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 363 [2022-11-23 02:42:14,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:14,423 INFO L130 PetriNetUnfolder]: 153/305 cut-off events. [2022-11-23 02:42:14,424 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-23 02:42:14,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 305 events. 153/305 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1132 event pairs, 41 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 869. Up to 199 conditions per place. [2022-11-23 02:42:14,426 INFO L137 encePairwiseOnDemand]: 356/363 looper letters, 62 selfloop transitions, 9 changer transitions 5/80 dead transitions. [2022-11-23 02:42:14,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 80 transitions, 496 flow [2022-11-23 02:42:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:42:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:42:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 821 transitions. [2022-11-23 02:42:14,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45234159779614325 [2022-11-23 02:42:14,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 821 transitions. [2022-11-23 02:42:14,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 821 transitions. [2022-11-23 02:42:14,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:14,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 821 transitions. [2022-11-23 02:42:14,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 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 02:42:14,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 363.0) internal successors, (2178), 6 states have internal predecessors, (2178), 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 02:42:14,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 363.0) internal successors, (2178), 6 states have internal predecessors, (2178), 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 02:42:14,439 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 216 flow. Second operand 5 states and 821 transitions. [2022-11-23 02:42:14,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 80 transitions, 496 flow [2022-11-23 02:42:14,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 80 transitions, 489 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 02:42:14,444 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 291 flow [2022-11-23 02:42:14,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2022-11-23 02:42:14,445 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2022-11-23 02:42:14,445 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 291 flow [2022-11-23 02:42:14,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:42:14,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:14,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:14,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:42:14,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1201969582, now seen corresponding path program 1 times [2022-11-23 02:42:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:14,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552119013] [2022-11-23 02:42:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:14,542 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 02:42:14,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:14,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552119013] [2022-11-23 02:42:14,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552119013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:14,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:14,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:42:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663157060] [2022-11-23 02:42:14,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:14,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:42:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:42:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:14,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 363 [2022-11-23 02:42:14,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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 02:42:14,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:14,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 363 [2022-11-23 02:42:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:14,956 INFO L130 PetriNetUnfolder]: 150/292 cut-off events. [2022-11-23 02:42:14,957 INFO L131 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-11-23 02:42:14,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 292 events. 150/292 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1022 event pairs, 14 based on Foata normal form. 10/275 useless extension candidates. Maximal degree in co-relation 934. Up to 273 conditions per place. [2022-11-23 02:42:14,959 INFO L137 encePairwiseOnDemand]: 355/363 looper letters, 46 selfloop transitions, 4 changer transitions 1/52 dead transitions. [2022-11-23 02:42:14,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 375 flow [2022-11-23 02:42:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:42:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:42:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 620 transitions. [2022-11-23 02:42:14,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42699724517906334 [2022-11-23 02:42:14,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 620 transitions. [2022-11-23 02:42:14,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 620 transitions. [2022-11-23 02:42:14,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:14,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 620 transitions. [2022-11-23 02:42:14,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 02:42:14,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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 02:42:14,970 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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 02:42:14,970 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 291 flow. Second operand 4 states and 620 transitions. [2022-11-23 02:42:14,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 375 flow [2022-11-23 02:42:14,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:42:14,975 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 249 flow [2022-11-23 02:42:14,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2022-11-23 02:42:14,976 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2022-11-23 02:42:14,976 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 249 flow [2022-11-23 02:42:14,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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 02:42:14,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:14,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:42:14,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:14,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash -303911211, now seen corresponding path program 1 times [2022-11-23 02:42:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:14,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471176183] [2022-11-23 02:42:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:15,446 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 02:42:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:15,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471176183] [2022-11-23 02:42:15,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471176183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:15,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:15,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:42:15,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966204798] [2022-11-23 02:42:15,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:15,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:42:15,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:15,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:42:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:42:15,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 363 [2022-11-23 02:42:15,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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 02:42:15,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:15,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 363 [2022-11-23 02:42:15,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:15,772 INFO L130 PetriNetUnfolder]: 223/431 cut-off events. [2022-11-23 02:42:15,772 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2022-11-23 02:42:15,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 431 events. 223/431 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1596 event pairs, 40 based on Foata normal form. 14/400 useless extension candidates. Maximal degree in co-relation 1268. Up to 272 conditions per place. [2022-11-23 02:42:15,776 INFO L137 encePairwiseOnDemand]: 356/363 looper letters, 56 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2022-11-23 02:42:15,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 459 flow [2022-11-23 02:42:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:42:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:42:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2022-11-23 02:42:15,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43732782369146006 [2022-11-23 02:42:15,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2022-11-23 02:42:15,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2022-11-23 02:42:15,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:15,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2022-11-23 02:42:15,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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 02:42:15,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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 02:42:15,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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 02:42:15,786 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 249 flow. Second operand 4 states and 635 transitions. [2022-11-23 02:42:15,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 459 flow [2022-11-23 02:42:15,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:42:15,790 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 283 flow [2022-11-23 02:42:15,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2022-11-23 02:42:15,792 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2022-11-23 02:42:15,794 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 283 flow [2022-11-23 02:42:15,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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 02:42:15,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:15,795 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:15,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:42:15,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1273321547, now seen corresponding path program 2 times [2022-11-23 02:42:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437507308] [2022-11-23 02:42:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:16,165 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 02:42:16,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:16,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437507308] [2022-11-23 02:42:16,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437507308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:16,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:16,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:42:16,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18652190] [2022-11-23 02:42:16,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:16,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:42:16,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:42:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:42:16,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 363 [2022-11-23 02:42:16,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 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 02:42:16,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:16,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 363 [2022-11-23 02:42:16,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:16,647 INFO L130 PetriNetUnfolder]: 49/147 cut-off events. [2022-11-23 02:42:16,647 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-11-23 02:42:16,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 147 events. 49/147 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 472 event pairs, 0 based on Foata normal form. 28/166 useless extension candidates. Maximal degree in co-relation 530. Up to 70 conditions per place. [2022-11-23 02:42:16,649 INFO L137 encePairwiseOnDemand]: 354/363 looper letters, 35 selfloop transitions, 20 changer transitions 10/66 dead transitions. [2022-11-23 02:42:16,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 509 flow [2022-11-23 02:42:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:42:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:42:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1171 transitions. [2022-11-23 02:42:16,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40323691460055094 [2022-11-23 02:42:16,654 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1171 transitions. [2022-11-23 02:42:16,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1171 transitions. [2022-11-23 02:42:16,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:16,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1171 transitions. [2022-11-23 02:42:16,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.375) internal successors, (1171), 8 states have internal predecessors, (1171), 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 02:42:16,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 363.0) internal successors, (3267), 9 states have internal predecessors, (3267), 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 02:42:16,664 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 363.0) internal successors, (3267), 9 states have internal predecessors, (3267), 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 02:42:16,664 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 283 flow. Second operand 8 states and 1171 transitions. [2022-11-23 02:42:16,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 509 flow [2022-11-23 02:42:16,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:42:16,669 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 333 flow [2022-11-23 02:42:16,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2022-11-23 02:42:16,670 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2022-11-23 02:42:16,671 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 333 flow [2022-11-23 02:42:16,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 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 02:42:16,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:16,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:16,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:42:16,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash -130070862, now seen corresponding path program 1 times [2022-11-23 02:42:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:16,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881464770] [2022-11-23 02:42:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:17,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881464770] [2022-11-23 02:42:17,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881464770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:17,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:17,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:42:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528013631] [2022-11-23 02:42:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:42:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:42:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:42:18,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 363 [2022-11-23 02:42:18,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 333 flow. Second operand has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 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 02:42:18,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:18,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 363 [2022-11-23 02:42:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:18,552 INFO L130 PetriNetUnfolder]: 73/214 cut-off events. [2022-11-23 02:42:18,552 INFO L131 PetriNetUnfolder]: For 365/365 co-relation queries the response was YES. [2022-11-23 02:42:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 214 events. 73/214 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 803 event pairs, 7 based on Foata normal form. 13/208 useless extension candidates. Maximal degree in co-relation 873. Up to 110 conditions per place. [2022-11-23 02:42:18,555 INFO L137 encePairwiseOnDemand]: 350/363 looper letters, 83 selfloop transitions, 27 changer transitions 1/112 dead transitions. [2022-11-23 02:42:18,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 991 flow [2022-11-23 02:42:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:42:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-23 02:42:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1499 transitions. [2022-11-23 02:42:18,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4129476584022039 [2022-11-23 02:42:18,562 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1499 transitions. [2022-11-23 02:42:18,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1499 transitions. [2022-11-23 02:42:18,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:18,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1499 transitions. [2022-11-23 02:42:18,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.9) internal successors, (1499), 10 states have internal predecessors, (1499), 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 02:42:18,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 363.0) internal successors, (3993), 11 states have internal predecessors, (3993), 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 02:42:18,575 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 363.0) internal successors, (3993), 11 states have internal predecessors, (3993), 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 02:42:18,576 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 333 flow. Second operand 10 states and 1499 transitions. [2022-11-23 02:42:18,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 991 flow [2022-11-23 02:42:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 872 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-11-23 02:42:18,582 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 539 flow [2022-11-23 02:42:18,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=539, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2022-11-23 02:42:18,583 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2022-11-23 02:42:18,583 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 539 flow [2022-11-23 02:42:18,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 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 02:42:18,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:18,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:42:18,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -129934075, now seen corresponding path program 1 times [2022-11-23 02:42:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:18,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455460117] [2022-11-23 02:42:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:42:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455460117] [2022-11-23 02:42:18,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455460117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:18,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:18,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:42:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858857208] [2022-11-23 02:42:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:18,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:42:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:42:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:42:18,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 363 [2022-11-23 02:42:18,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 02:42:18,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:18,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 363 [2022-11-23 02:42:18,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:18,855 INFO L130 PetriNetUnfolder]: 65/209 cut-off events. [2022-11-23 02:42:18,855 INFO L131 PetriNetUnfolder]: For 452/452 co-relation queries the response was YES. [2022-11-23 02:42:18,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 209 events. 65/209 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 823 event pairs, 8 based on Foata normal form. 13/222 useless extension candidates. Maximal degree in co-relation 886. Up to 105 conditions per place. [2022-11-23 02:42:18,857 INFO L137 encePairwiseOnDemand]: 357/363 looper letters, 57 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2022-11-23 02:42:18,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 712 flow [2022-11-23 02:42:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:42:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:42:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2022-11-23 02:42:18,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44995408631772266 [2022-11-23 02:42:18,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2022-11-23 02:42:18,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2022-11-23 02:42:18,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:18,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2022-11-23 02:42:18,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 02:42:18,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:18,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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 02:42:18,865 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 539 flow. Second operand 3 states and 490 transitions. [2022-11-23 02:42:18,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 712 flow [2022-11-23 02:42:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 702 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 02:42:18,882 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 563 flow [2022-11-23 02:42:18,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=563, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2022-11-23 02:42:18,884 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2022-11-23 02:42:18,884 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 563 flow [2022-11-23 02:42:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 02:42:18,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:18,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:18,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:42:18,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1619328050, now seen corresponding path program 1 times [2022-11-23 02:42:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:18,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894719041] [2022-11-23 02:42:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:19,253 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 02:42:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:19,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894719041] [2022-11-23 02:42:19,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894719041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:42:19,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:42:19,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:42:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583893212] [2022-11-23 02:42:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:42:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:42:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:42:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:42:19,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 363 [2022-11-23 02:42:19,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 148.22222222222223) internal successors, (1334), 9 states have internal predecessors, (1334), 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 02:42:19,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:19,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 363 [2022-11-23 02:42:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:20,002 INFO L130 PetriNetUnfolder]: 32/114 cut-off events. [2022-11-23 02:42:20,003 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2022-11-23 02:42:20,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 114 events. 32/114 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 320 event pairs, 5 based on Foata normal form. 13/127 useless extension candidates. Maximal degree in co-relation 512. Up to 48 conditions per place. [2022-11-23 02:42:20,004 INFO L137 encePairwiseOnDemand]: 352/363 looper letters, 50 selfloop transitions, 15 changer transitions 1/67 dead transitions. [2022-11-23 02:42:20,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 643 flow [2022-11-23 02:42:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:42:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:42:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1370 transitions. [2022-11-23 02:42:20,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4193449647995103 [2022-11-23 02:42:20,009 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1370 transitions. [2022-11-23 02:42:20,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1370 transitions. [2022-11-23 02:42:20,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:20,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1370 transitions. [2022-11-23 02:42:20,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.22222222222223) internal successors, (1370), 9 states have internal predecessors, (1370), 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 02:42:20,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 363.0) internal successors, (3630), 10 states have internal predecessors, (3630), 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 02:42:20,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 363.0) internal successors, (3630), 10 states have internal predecessors, (3630), 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 02:42:20,020 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 563 flow. Second operand 9 states and 1370 transitions. [2022-11-23 02:42:20,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 643 flow [2022-11-23 02:42:20,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 597 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-23 02:42:20,025 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 386 flow [2022-11-23 02:42:20,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=386, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2022-11-23 02:42:20,026 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2022-11-23 02:42:20,026 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 386 flow [2022-11-23 02:42:20,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 148.22222222222223) internal successors, (1334), 9 states have internal predecessors, (1334), 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 02:42:20,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:20,027 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:20,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:42:20,028 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash 921351852, now seen corresponding path program 1 times [2022-11-23 02:42:20,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041413586] [2022-11-23 02:42:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041413586] [2022-11-23 02:42:20,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041413586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242283700] [2022-11-23 02:42:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:20,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:20,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:20,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:42:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:20,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-23 02:42:20,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:20,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-23 02:42:20,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:42:20,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 02:42:20,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 02:42:21,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 02:42:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:21,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:42:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:21,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242283700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:42:21,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:42:21,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 23 [2022-11-23 02:42:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166757040] [2022-11-23 02:42:21,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:42:21,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 02:42:21,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 02:42:21,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:42:24,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 363 [2022-11-23 02:42:24,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 386 flow. Second operand has 25 states, 25 states have (on average 147.2) internal successors, (3680), 25 states have internal predecessors, (3680), 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 02:42:24,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:24,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 363 [2022-11-23 02:42:24,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:25,706 INFO L130 PetriNetUnfolder]: 95/308 cut-off events. [2022-11-23 02:42:25,706 INFO L131 PetriNetUnfolder]: For 806/806 co-relation queries the response was YES. [2022-11-23 02:42:25,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1363 conditions, 308 events. 95/308 cut-off events. For 806/806 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1295 event pairs, 10 based on Foata normal form. 27/335 useless extension candidates. Maximal degree in co-relation 1343. Up to 119 conditions per place. [2022-11-23 02:42:25,709 INFO L137 encePairwiseOnDemand]: 350/363 looper letters, 52 selfloop transitions, 37 changer transitions 84/174 dead transitions. [2022-11-23 02:42:25,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 174 transitions, 1692 flow [2022-11-23 02:42:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 02:42:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-23 02:42:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4035 transitions. [2022-11-23 02:42:25,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41169268441995716 [2022-11-23 02:42:25,720 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4035 transitions. [2022-11-23 02:42:25,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4035 transitions. [2022-11-23 02:42:25,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:25,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4035 transitions. [2022-11-23 02:42:25,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 149.44444444444446) internal successors, (4035), 27 states have internal predecessors, (4035), 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 02:42:25,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 363.0) internal successors, (10164), 28 states have internal predecessors, (10164), 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 02:42:25,749 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 363.0) internal successors, (10164), 28 states have internal predecessors, (10164), 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 02:42:25,750 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 386 flow. Second operand 27 states and 4035 transitions. [2022-11-23 02:42:25,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 174 transitions, 1692 flow [2022-11-23 02:42:25,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 174 transitions, 1567 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-23 02:42:25,759 INFO L231 Difference]: Finished difference. Result has 99 places, 61 transitions, 606 flow [2022-11-23 02:42:25,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=606, PETRI_PLACES=99, PETRI_TRANSITIONS=61} [2022-11-23 02:42:25,760 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 51 predicate places. [2022-11-23 02:42:25,760 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 61 transitions, 606 flow [2022-11-23 02:42:25,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 147.2) internal successors, (3680), 25 states have internal predecessors, (3680), 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 02:42:25,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:42:25,763 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:25,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:42:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 02:42:25,972 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-23 02:42:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:42:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1906255372, now seen corresponding path program 2 times [2022-11-23 02:42:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:42:25,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508133401] [2022-11-23 02:42:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:42:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:42:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:42:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:42:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508133401] [2022-11-23 02:42:26,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508133401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:42:26,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787885851] [2022-11-23 02:42:26,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:42:26,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:42:26,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:42:26,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:42:27,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:42:27,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:42:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-23 02:42:27,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:42:27,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-23 02:42:27,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-23 02:42:27,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-23 02:42:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:27,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:42:28,134 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-23 02:42:28,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2022-11-23 02:42:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:42:28,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787885851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:42:28,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:42:28,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2022-11-23 02:42:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700299869] [2022-11-23 02:42:28,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:42:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 02:42:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:42:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 02:42:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=943, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 02:42:31,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 363 [2022-11-23 02:42:31,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 61 transitions, 606 flow. Second operand has 35 states, 35 states have (on average 147.11428571428573) internal successors, (5149), 35 states have internal predecessors, (5149), 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 02:42:31,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:42:31,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 363 [2022-11-23 02:42:31,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:42:33,062 INFO L130 PetriNetUnfolder]: 60/278 cut-off events. [2022-11-23 02:42:33,063 INFO L131 PetriNetUnfolder]: For 2099/2099 co-relation queries the response was YES. [2022-11-23 02:42:33,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 278 events. 60/278 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1186 event pairs, 21 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 1477. Up to 89 conditions per place. [2022-11-23 02:42:33,065 INFO L137 encePairwiseOnDemand]: 351/363 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2022-11-23 02:42:33,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 112 transitions, 1343 flow [2022-11-23 02:42:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 02:42:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-23 02:42:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3404 transitions. [2022-11-23 02:42:33,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2022-11-23 02:42:33,076 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3404 transitions. [2022-11-23 02:42:33,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3404 transitions. [2022-11-23 02:42:33,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:42:33,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3404 transitions. [2022-11-23 02:42:33,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 148.0) internal successors, (3404), 23 states have internal predecessors, (3404), 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 02:42:33,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 363.0) internal successors, (8712), 24 states have internal predecessors, (8712), 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 02:42:33,102 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 363.0) internal successors, (8712), 24 states have internal predecessors, (8712), 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 02:42:33,102 INFO L175 Difference]: Start difference. First operand has 99 places, 61 transitions, 606 flow. Second operand 23 states and 3404 transitions. [2022-11-23 02:42:33,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 112 transitions, 1343 flow [2022-11-23 02:42:33,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 112 transitions, 1161 flow, removed 55 selfloop flow, removed 13 redundant places. [2022-11-23 02:42:33,114 INFO L231 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2022-11-23 02:42:33,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2022-11-23 02:42:33,115 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 53 predicate places. [2022-11-23 02:42:33,116 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2022-11-23 02:42:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 147.11428571428573) internal successors, (5149), 35 states have internal predecessors, (5149), 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 02:42:33,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 40 remaining) [2022-11-23 02:42:33,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2022-11-23 02:42:33,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2022-11-23 02:42:33,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2022-11-23 02:42:33,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (35 of 40 remaining) [2022-11-23 02:42:33,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 40 remaining) [2022-11-23 02:42:33,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 40 remaining) [2022-11-23 02:42:33,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 40 remaining) [2022-11-23 02:42:33,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 40 remaining) [2022-11-23 02:42:33,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2022-11-23 02:42:33,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2022-11-23 02:42:33,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 40 remaining) [2022-11-23 02:42:33,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2022-11-23 02:42:33,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2022-11-23 02:42:33,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2022-11-23 02:42:33,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2022-11-23 02:42:33,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2022-11-23 02:42:33,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2022-11-23 02:42:33,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr7ASSERT_VIOLATIONMEMORY_LEAK (21 of 40 remaining) [2022-11-23 02:42:33,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 40 remaining) [2022-11-23 02:42:33,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 40 remaining) [2022-11-23 02:42:33,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONMEMORY_LEAK (18 of 40 remaining) [2022-11-23 02:42:33,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2022-11-23 02:42:33,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2022-11-23 02:42:33,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2022-11-23 02:42:33,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2022-11-23 02:42:33,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2022-11-23 02:42:33,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 40 remaining) [2022-11-23 02:42:33,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 40 remaining) [2022-11-23 02:42:33,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2022-11-23 02:42:33,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2022-11-23 02:42:33,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2022-11-23 02:42:33,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 40 remaining) [2022-11-23 02:42:33,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2022-11-23 02:42:33,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2022-11-23 02:42:33,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 40 remaining) [2022-11-23 02:42:33,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2022-11-23 02:42:33,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2022-11-23 02:42:33,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2022-11-23 02:42:33,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 40 remaining) [2022-11-23 02:42:33,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:42:33,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:42:33,344 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:42:33,355 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:42:33,356 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:42:33,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:42:33 BasicIcfg [2022-11-23 02:42:33,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:42:33,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:42:33,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:42:33,361 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:42:33,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:01" (3/4) ... [2022-11-23 02:42:33,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:42:33,372 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2022-11-23 02:42:33,381 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-23 02:42:33,382 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 02:42:33,382 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 02:42:33,382 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 02:42:33,430 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:42:33,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:42:33,431 INFO L158 Benchmark]: Toolchain (without parser) took 33540.68ms. Allocated memory was 218.1MB in the beginning and 453.0MB in the end (delta: 234.9MB). Free memory was 169.5MB in the beginning and 295.5MB in the end (delta: -126.0MB). Peak memory consumption was 111.0MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,432 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 151.0MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:42:33,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.50ms. Allocated memory is still 218.1MB. Free memory was 169.5MB in the beginning and 149.8MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.89ms. Allocated memory is still 218.1MB. Free memory was 149.8MB in the beginning and 146.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,433 INFO L158 Benchmark]: Boogie Preprocessor took 51.52ms. Allocated memory is still 218.1MB. Free memory was 146.9MB in the beginning and 145.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,436 INFO L158 Benchmark]: RCFGBuilder took 700.17ms. Allocated memory is still 218.1MB. Free memory was 145.6MB in the beginning and 126.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,437 INFO L158 Benchmark]: TraceAbstraction took 32047.32ms. Allocated memory was 218.1MB in the beginning and 453.0MB in the end (delta: 234.9MB). Free memory was 125.9MB in the beginning and 298.1MB in the end (delta: -172.2MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,437 INFO L158 Benchmark]: Witness Printer took 70.25ms. Allocated memory is still 453.0MB. Free memory was 298.1MB in the beginning and 295.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:42:33,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 151.0MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.50ms. Allocated memory is still 218.1MB. Free memory was 169.5MB in the beginning and 149.8MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.89ms. Allocated memory is still 218.1MB. Free memory was 149.8MB in the beginning and 146.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.52ms. Allocated memory is still 218.1MB. Free memory was 146.9MB in the beginning and 145.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 700.17ms. Allocated memory is still 218.1MB. Free memory was 145.6MB in the beginning and 126.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 32047.32ms. Allocated memory was 218.1MB in the beginning and 453.0MB in the end (delta: 234.9MB). Free memory was 125.9MB in the beginning and 298.1MB in the end (delta: -172.2MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. * Witness Printer took 70.25ms. Allocated memory is still 453.0MB. Free memory was 298.1MB in the beginning and 295.5MB in the end (delta: 2.6MB). 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: 9.3s, 161 PlacesBefore, 48 PlacesAfterwards, 167 TransitionsBefore, 49 TransitionsAfterwards, 6956 CoEnabledTransitionPairs, 7 FixpointIterations, 54 TrivialSequentialCompositions, 114 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 5 ChoiceCompositions, 195 TotalNumberOfCompositions, 12405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8740, independent: 8460, independent conditional: 0, independent unconditional: 8460, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5147, independent: 5072, independent conditional: 0, independent unconditional: 5072, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5147, independent: 5060, independent conditional: 0, independent unconditional: 5060, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 87, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 338, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 304, dependent conditional: 0, dependent unconditional: 304, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8740, independent: 3388, independent conditional: 0, independent unconditional: 3388, dependent: 205, dependent conditional: 0, dependent unconditional: 205, unknown: 5147, unknown conditional: 0, unknown unconditional: 5147] , Statistics on independence cache: Total cache size (in pairs): 308, Positive cache size: 280, Positive conditional cache size: 0, Positive unconditional cache size: 280, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, 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: 743]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -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: -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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 228 locations, 40 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: 31.8s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5733 SdHoareTripleChecker+Valid, 11.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4645 mSDsluCounter, 3430 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3238 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12588 IncrementalHoareTripleChecker+Invalid, 12828 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 192 mSDtfsCounter, 12588 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=606occurred in iteration=14, InterpolantAutomatonStates: 113, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 227 ConstructedInterpolants, 10 QuantifiedInterpolants, 2575 SizeOfPredicates, 52 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 62/71 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 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 02:42:33,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bb19d46-6c15-4a39-94cd-92844433fce0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE