./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:50:58,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:50:58,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:50:58,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:50:58,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:50:58,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:50:58,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:50:58,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:50:58,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:50:58,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:50:58,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:50:58,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:50:58,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:50:58,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:50:58,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:50:58,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:50:58,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:50:58,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:50:58,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:50:58,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:50:58,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:50:58,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:50:58,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:50:58,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:50:58,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:50:58,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:50:58,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:50:58,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:50:58,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:50:58,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:50:58,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:50:58,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:50:58,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:50:58,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:50:58,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:50:58,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:50:58,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:50:58,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:50:58,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:50:58,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:50:58,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:50:58,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 16:50:58,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:50:58,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:50:58,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:50:58,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:50:58,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:50:58,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:50:58,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:50:58,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:50:58,134 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:50:58,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:50:58,134 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:50:58,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:50:58,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:50:58,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:50:58,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:50:58,136 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:50:58,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:50:58,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:50:58,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:50:58,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:50:58,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:50:58,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:50:58,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:50:58,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:50:58,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:50:58,137 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:50:58,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:50:58,138 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:50:58,138 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_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2022-12-13 16:50:58,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:50:58,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:50:58,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:50:58,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:50:58,333 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:50:58,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2022-12-13 16:51:01,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:51:01,214 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:51:01,214 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2022-12-13 16:51:01,224 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/data/8e63a3ae8/3a5181f814674a45b084d33adb99db07/FLAG4a3c7d323 [2022-12-13 16:51:01,235 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/data/8e63a3ae8/3a5181f814674a45b084d33adb99db07 [2022-12-13 16:51:01,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:51:01,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:51:01,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:51:01,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:51:01,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:51:01,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669dfc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01, skipping insertion in model container [2022-12-13 16:51:01,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:51:01,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:51:01,389 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_9d613f99-1450-47b6-b72c-ced85e655646/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2022-12-13 16:51:01,535 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,539 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,541 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,545 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:51:01,554 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:51:01,562 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_9d613f99-1450-47b6-b72c-ced85e655646/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i[1087,1100] [2022-12-13 16:51:01,583 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,584 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,585 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,588 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 16:51:01,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:51:01,620 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:51:01,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01 WrapperNode [2022-12-13 16:51:01,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:51:01,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:51:01,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:51:01,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:51:01,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,655 INFO L138 Inliner]: procedures = 271, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2022-12-13 16:51:01,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:51:01,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:51:01,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:51:01,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:51:01,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:51:01,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:51:01,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:51:01,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:51:01,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (1/1) ... [2022-12-13 16:51:01,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:51:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:51:01,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:51:01,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:51:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-12-13 16:51:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:51:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2022-12-13 16:51:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2022-12-13 16:51:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:51:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:51:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 16:51:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:51:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2022-12-13 16:51:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2022-12-13 16:51:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure process [2022-12-13 16:51:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2022-12-13 16:51:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:51:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:51:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:51:01,748 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:51:01,984 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:51:01,985 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:51:02,184 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:51:02,191 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:51:02,191 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 16:51:02,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:51:02 BoogieIcfgContainer [2022-12-13 16:51:02,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:51:02,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:51:02,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:51:02,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:51:02,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:51:01" (1/3) ... [2022-12-13 16:51:02,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9473a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:51:02, skipping insertion in model container [2022-12-13 16:51:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:51:01" (2/3) ... [2022-12-13 16:51:02,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9473a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:51:02, skipping insertion in model container [2022-12-13 16:51:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:51:02" (3/3) ... [2022-12-13 16:51:02,199 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2022-12-13 16:51:02,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:51:02,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-12-13 16:51:02,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:51:02,261 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:51:02,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 353 flow [2022-12-13 16:51:02,335 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-12-13 16:51:02,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:51:02,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 166 events. 12/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-12-13 16:51:02,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 353 flow [2022-12-13 16:51:02,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 166 transitions, 341 flow [2022-12-13 16:51:02,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:51:02,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 166 transitions, 341 flow [2022-12-13 16:51:02,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 166 transitions, 341 flow [2022-12-13 16:51:02,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 166 transitions, 341 flow [2022-12-13 16:51:02,386 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-12-13 16:51:02,386 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:51:02,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 166 events. 12/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-12-13 16:51:02,391 INFO L119 LiptonReduction]: Number of co-enabled transitions 10000 [2022-12-13 16:51:05,951 INFO L134 LiptonReduction]: Checked pairs total: 19590 [2022-12-13 16:51:05,951 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-13 16:51:05,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:51:05,969 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;@6a1f3a6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:51:05,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 16:51:05,970 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 16:51:05,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:51:05,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:05,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 16:51:05,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash 651, now seen corresponding path program 1 times [2022-12-13 16:51:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:05,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323689481] [2022-12-13 16:51:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:06,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:06,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323689481] [2022-12-13 16:51:06,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323689481] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:06,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:06,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 16:51:06,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108169877] [2022-12-13 16:51:06,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:51:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:51:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:51:06,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2022-12-13 16:51:06,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 111 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:06,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:06,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2022-12-13 16:51:06,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:07,022 INFO L130 PetriNetUnfolder]: 9252/12675 cut-off events. [2022-12-13 16:51:07,022 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-13 16:51:07,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24963 conditions, 12675 events. 9252/12675 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 62333 event pairs, 6888 based on Foata normal form. 0/9827 useless extension candidates. Maximal degree in co-relation 24952. Up to 12172 conditions per place. [2022-12-13 16:51:07,086 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 41 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2022-12-13 16:51:07,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 185 flow [2022-12-13 16:51:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:51:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 16:51:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 357 transitions. [2022-12-13 16:51:07,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5492307692307692 [2022-12-13 16:51:07,099 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 357 transitions. [2022-12-13 16:51:07,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 357 transitions. [2022-12-13 16:51:07,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:07,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 357 transitions. [2022-12-13 16:51:07,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:07,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:07,109 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:07,111 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 111 flow. Second operand 2 states and 357 transitions. [2022-12-13 16:51:07,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 185 flow [2022-12-13 16:51:07,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 182 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 16:51:07,116 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 100 flow [2022-12-13 16:51:07,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2022-12-13 16:51:07,121 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2022-12-13 16:51:07,121 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 100 flow [2022-12-13 16:51:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:07,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:07,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:51:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:51:07,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:07,123 INFO L85 PathProgramCache]: Analyzing trace with hash 639553, now seen corresponding path program 1 times [2022-12-13 16:51:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:07,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124086029] [2022-12-13 16:51:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124086029] [2022-12-13 16:51:07,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124086029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:07,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:07,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:51:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021458683] [2022-12-13 16:51:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:07,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2022-12-13 16:51:07,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:07,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:07,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2022-12-13 16:51:07,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:08,083 INFO L130 PetriNetUnfolder]: 9247/12544 cut-off events. [2022-12-13 16:51:08,083 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:51:08,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24820 conditions, 12544 events. 9247/12544 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 61262 event pairs, 5364 based on Foata normal form. 0/9647 useless extension candidates. Maximal degree in co-relation 24817. Up to 9601 conditions per place. [2022-12-13 16:51:08,132 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 59 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2022-12-13 16:51:08,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 266 flow [2022-12-13 16:51:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2022-12-13 16:51:08,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5323076923076923 [2022-12-13 16:51:08,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2022-12-13 16:51:08,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2022-12-13 16:51:08,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:08,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2022-12-13 16:51:08,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,142 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 100 flow. Second operand 3 states and 519 transitions. [2022-12-13 16:51:08,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 266 flow [2022-12-13 16:51:08,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:51:08,143 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 104 flow [2022-12-13 16:51:08,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-13 16:51:08,144 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2022-12-13 16:51:08,144 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 104 flow [2022-12-13 16:51:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:08,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:51:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:51:08,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash 639555, now seen corresponding path program 1 times [2022-12-13 16:51:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:08,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943044036] [2022-12-13 16:51:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:08,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:08,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943044036] [2022-12-13 16:51:08,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943044036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:08,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:08,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:51:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239019426] [2022-12-13 16:51:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:08,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:08,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 325 [2022-12-13 16:51:08,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:08,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 325 [2022-12-13 16:51:08,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:08,925 INFO L130 PetriNetUnfolder]: 9242/12533 cut-off events. [2022-12-13 16:51:08,925 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 16:51:08,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25401 conditions, 12533 events. 9242/12533 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 61235 event pairs, 5360 based on Foata normal form. 0/9942 useless extension candidates. Maximal degree in co-relation 25397. Up to 9591 conditions per place. [2022-12-13 16:51:08,967 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 58 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2022-12-13 16:51:08,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 268 flow [2022-12-13 16:51:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2022-12-13 16:51:08,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.518974358974359 [2022-12-13 16:51:08,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2022-12-13 16:51:08,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2022-12-13 16:51:08,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:08,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2022-12-13 16:51:08,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,976 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 104 flow. Second operand 3 states and 506 transitions. [2022-12-13 16:51:08,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 268 flow [2022-12-13 16:51:08,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:08,985 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 102 flow [2022-12-13 16:51:08,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2022-12-13 16:51:08,986 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2022-12-13 16:51:08,986 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 102 flow [2022-12-13 16:51:08,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:08,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:08,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:51:08,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:51:08,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash 614626243, now seen corresponding path program 1 times [2022-12-13 16:51:08,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:08,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639733625] [2022-12-13 16:51:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:09,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:09,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639733625] [2022-12-13 16:51:09,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639733625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:09,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:09,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:51:09,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447322930] [2022-12-13 16:51:09,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:09,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:09,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:09,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2022-12-13 16:51:09,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:09,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:09,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2022-12-13 16:51:09,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:09,855 INFO L130 PetriNetUnfolder]: 9139/12363 cut-off events. [2022-12-13 16:51:09,855 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 16:51:09,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25078 conditions, 12363 events. 9139/12363 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 60136 event pairs, 5277 based on Foata normal form. 0/9835 useless extension candidates. Maximal degree in co-relation 25074. Up to 9438 conditions per place. [2022-12-13 16:51:09,891 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 57 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2022-12-13 16:51:09,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 264 flow [2022-12-13 16:51:09,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-12-13 16:51:09,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5302564102564102 [2022-12-13 16:51:09,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-12-13 16:51:09,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-12-13 16:51:09,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:09,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-12-13 16:51:09,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:09,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:09,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:09,898 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 102 flow. Second operand 3 states and 517 transitions. [2022-12-13 16:51:09,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 264 flow [2022-12-13 16:51:09,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:09,909 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 100 flow [2022-12-13 16:51:09,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2022-12-13 16:51:09,910 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2022-12-13 16:51:09,910 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 100 flow [2022-12-13 16:51:09,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:09,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:09,911 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:51:09,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:51:09,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:09,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash 614626244, now seen corresponding path program 1 times [2022-12-13 16:51:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:09,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618271433] [2022-12-13 16:51:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:09,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618271433] [2022-12-13 16:51:09,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618271433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:09,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:09,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:51:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177585917] [2022-12-13 16:51:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:10,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 325 [2022-12-13 16:51:10,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:10,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:10,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 325 [2022-12-13 16:51:10,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:10,571 INFO L130 PetriNetUnfolder]: 9036/12193 cut-off events. [2022-12-13 16:51:10,571 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 16:51:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24755 conditions, 12193 events. 9036/12193 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 58890 event pairs, 5194 based on Foata normal form. 0/9728 useless extension candidates. Maximal degree in co-relation 24751. Up to 9285 conditions per place. [2022-12-13 16:51:10,607 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 56 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2022-12-13 16:51:10,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 260 flow [2022-12-13 16:51:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-12-13 16:51:10,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5169230769230769 [2022-12-13 16:51:10,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-12-13 16:51:10,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-12-13 16:51:10,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:10,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-12-13 16:51:10,610 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) [2022-12-13 16:51:10,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:10,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:10,611 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 100 flow. Second operand 3 states and 504 transitions. [2022-12-13 16:51:10,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 260 flow [2022-12-13 16:51:10,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:10,619 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 98 flow [2022-12-13 16:51:10,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2022-12-13 16:51:10,619 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2022-12-13 16:51:10,620 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 98 flow [2022-12-13 16:51:10,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:10,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:10,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:10,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:51:10,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash 885255921, now seen corresponding path program 1 times [2022-12-13 16:51:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:10,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241135446] [2022-12-13 16:51:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:10,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241135446] [2022-12-13 16:51:10,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241135446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:10,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:10,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232892712] [2022-12-13 16:51:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:10,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:10,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:10,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2022-12-13 16:51:10,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:10,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:10,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2022-12-13 16:51:10,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:11,623 INFO L130 PetriNetUnfolder]: 14916/19693 cut-off events. [2022-12-13 16:51:11,624 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 16:51:11,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39935 conditions, 19693 events. 14916/19693 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 97114 event pairs, 6714 based on Foata normal form. 300/16098 useless extension candidates. Maximal degree in co-relation 39931. Up to 11846 conditions per place. [2022-12-13 16:51:11,692 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 63 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-13 16:51:11,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 284 flow [2022-12-13 16:51:11,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 16:51:11,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-13 16:51:11,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 16:51:11,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 16:51:11,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:11,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 16:51:11,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:11,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:11,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:11,699 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 98 flow. Second operand 3 states and 520 transitions. [2022-12-13 16:51:11,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 284 flow [2022-12-13 16:51:11,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:51:11,746 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 106 flow [2022-12-13 16:51:11,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2022-12-13 16:51:11,747 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2022-12-13 16:51:11,747 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 106 flow [2022-12-13 16:51:11,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:11,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:11,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:11,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:51:11,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 327299504, now seen corresponding path program 1 times [2022-12-13 16:51:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:11,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345941040] [2022-12-13 16:51:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:11,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:11,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345941040] [2022-12-13 16:51:11,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345941040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:11,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:11,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:51:11,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783337481] [2022-12-13 16:51:11,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:11,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:11,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:11,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:11,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:11,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 325 [2022-12-13 16:51:11,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:11,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:11,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 325 [2022-12-13 16:51:11,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:13,708 INFO L130 PetriNetUnfolder]: 26064/34857 cut-off events. [2022-12-13 16:51:13,709 INFO L131 PetriNetUnfolder]: For 2756/2756 co-relation queries the response was YES. [2022-12-13 16:51:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72423 conditions, 34857 events. 26064/34857 cut-off events. For 2756/2756 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 187761 event pairs, 5952 based on Foata normal form. 0/28514 useless extension candidates. Maximal degree in co-relation 72418. Up to 25863 conditions per place. [2022-12-13 16:51:13,834 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2022-12-13 16:51:13,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 330 flow [2022-12-13 16:51:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-12-13 16:51:13,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5282051282051282 [2022-12-13 16:51:13,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-12-13 16:51:13,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-12-13 16:51:13,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:13,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-12-13 16:51:13,838 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) [2022-12-13 16:51:13,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:13,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:13,840 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 106 flow. Second operand 3 states and 515 transitions. [2022-12-13 16:51:13,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 330 flow [2022-12-13 16:51:13,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:51:13,844 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 140 flow [2022-12-13 16:51:13,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2022-12-13 16:51:13,845 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2022-12-13 16:51:13,845 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 140 flow [2022-12-13 16:51:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:13,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:13,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:51:13,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:13,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1496357973, now seen corresponding path program 1 times [2022-12-13 16:51:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:13,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488916596] [2022-12-13 16:51:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:13,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:13,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488916596] [2022-12-13 16:51:13,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488916596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:13,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612518661] [2022-12-13 16:51:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:51:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:51:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:51:13,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 325 [2022-12-13 16:51:13,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:13,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:13,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 325 [2022-12-13 16:51:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:17,671 INFO L130 PetriNetUnfolder]: 52021/70998 cut-off events. [2022-12-13 16:51:17,671 INFO L131 PetriNetUnfolder]: For 12807/12837 co-relation queries the response was YES. [2022-12-13 16:51:17,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157294 conditions, 70998 events. 52021/70998 cut-off events. For 12807/12837 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 416290 event pairs, 10002 based on Foata normal form. 2/61261 useless extension candidates. Maximal degree in co-relation 157288. Up to 25816 conditions per place. [2022-12-13 16:51:18,006 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 122 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2022-12-13 16:51:18,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 135 transitions, 637 flow [2022-12-13 16:51:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:51:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:51:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 872 transitions. [2022-12-13 16:51:18,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5366153846153846 [2022-12-13 16:51:18,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 872 transitions. [2022-12-13 16:51:18,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 872 transitions. [2022-12-13 16:51:18,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:18,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 872 transitions. [2022-12-13 16:51:18,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:18,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:18,015 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:18,015 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 140 flow. Second operand 5 states and 872 transitions. [2022-12-13 16:51:18,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 135 transitions, 637 flow [2022-12-13 16:51:18,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 135 transitions, 624 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:51:18,045 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 190 flow [2022-12-13 16:51:18,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2022-12-13 16:51:18,045 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2022-12-13 16:51:18,045 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 190 flow [2022-12-13 16:51:18,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:18,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:18,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:18,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:51:18,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:18,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash 588586446, now seen corresponding path program 1 times [2022-12-13 16:51:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:18,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878616060] [2022-12-13 16:51:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:18,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:18,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878616060] [2022-12-13 16:51:18,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878616060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:18,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:18,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:51:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128095161] [2022-12-13 16:51:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:51:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:51:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:51:18,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 325 [2022-12-13 16:51:18,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:18,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:18,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 325 [2022-12-13 16:51:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:24,848 INFO L130 PetriNetUnfolder]: 75771/106146 cut-off events. [2022-12-13 16:51:24,848 INFO L131 PetriNetUnfolder]: For 48644/50554 co-relation queries the response was YES. [2022-12-13 16:51:25,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261114 conditions, 106146 events. 75771/106146 cut-off events. For 48644/50554 co-relation queries the response was YES. Maximal size of possible extension queue 2673. Compared 723868 event pairs, 19624 based on Foata normal form. 3581/100341 useless extension candidates. Maximal degree in co-relation 261105. Up to 61427 conditions per place. [2022-12-13 16:51:25,358 INFO L137 encePairwiseOnDemand]: 313/325 looper letters, 67 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2022-12-13 16:51:25,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 484 flow [2022-12-13 16:51:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:51:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:51:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-12-13 16:51:25,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5169230769230769 [2022-12-13 16:51:25,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-12-13 16:51:25,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-12-13 16:51:25,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:25,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-12-13 16:51:25,362 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) [2022-12-13 16:51:25,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:25,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:25,364 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 190 flow. Second operand 3 states and 504 transitions. [2022-12-13 16:51:25,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 484 flow [2022-12-13 16:51:25,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:51:25,392 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 290 flow [2022-12-13 16:51:25,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2022-12-13 16:51:25,392 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2022-12-13 16:51:25,393 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 290 flow [2022-12-13 16:51:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:25,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:25,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:25,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:51:25,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1003165945, now seen corresponding path program 1 times [2022-12-13 16:51:25,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:25,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195378831] [2022-12-13 16:51:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195378831] [2022-12-13 16:51:25,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195378831] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:51:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107370200] [2022-12-13 16:51:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:51:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:51:25,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:51:25,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:51:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:51:25,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:51:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:25,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:51:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:25,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107370200] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:51:25,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:51:25,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:51:25,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095901657] [2022-12-13 16:51:25,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:51:25,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:51:25,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:25,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:51:25,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:51:25,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 325 [2022-12-13 16:51:25,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 153.71428571428572) internal successors, (1076), 7 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:25,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:25,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 325 [2022-12-13 16:51:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:38,125 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][207], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 218#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 196#(= ~B~0 ~A~0), 89#L1206-1true, 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:38,126 INFO L383 tUnfolder$Statistics]: this new event has 50 ancestors and is cut-off event [2022-12-13 16:51:38,126 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 16:51:38,126 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2022-12-13 16:51:38,126 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-12-13 16:51:38,363 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][207], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 110#L1208true, 122#L1190true, disposeThread1of1ForFork2InUse, 218#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 196#(= ~B~0 ~A~0), 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:38,363 INFO L383 tUnfolder$Statistics]: this new event has 51 ancestors and is cut-off event [2022-12-13 16:51:38,364 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 16:51:38,364 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 16:51:38,364 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 16:51:38,556 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][207], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 218#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 31#L19true, 196#(= ~B~0 ~A~0), 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:38,556 INFO L383 tUnfolder$Statistics]: this new event has 52 ancestors and is cut-off event [2022-12-13 16:51:38,556 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-12-13 16:51:38,556 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 16:51:38,556 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 16:51:38,699 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][207], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 210#true, 218#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), 38#L1210true, Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, Black: 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), 199#true, 196#(= ~B~0 ~A~0)]) [2022-12-13 16:51:38,699 INFO L383 tUnfolder$Statistics]: this new event has 53 ancestors and is cut-off event [2022-12-13 16:51:38,700 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 16:51:38,700 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 16:51:38,700 INFO L386 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-12-13 16:51:38,811 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][224], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 210#true, 263#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 17#L1205-6true, Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, Black: 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), 199#true, 196#(= ~B~0 ~A~0)]) [2022-12-13 16:51:38,811 INFO L383 tUnfolder$Statistics]: this new event has 54 ancestors and is cut-off event [2022-12-13 16:51:38,812 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 16:51:38,812 INFO L386 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-12-13 16:51:38,812 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 16:51:38,896 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][224], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 263#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 196#(= ~B~0 ~A~0), 89#L1206-1true, 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:38,896 INFO L383 tUnfolder$Statistics]: this new event has 55 ancestors and is cut-off event [2022-12-13 16:51:38,896 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 16:51:38,896 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-12-13 16:51:38,896 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 16:51:38,957 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][224], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, 110#L1208true, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 263#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 196#(= ~B~0 ~A~0), 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:38,958 INFO L383 tUnfolder$Statistics]: this new event has 56 ancestors and is cut-off event [2022-12-13 16:51:38,958 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 16:51:38,958 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-12-13 16:51:38,958 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 16:51:39,006 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][224], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 263#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 31#L19true, 196#(= ~B~0 ~A~0), 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:39,006 INFO L383 tUnfolder$Statistics]: this new event has 57 ancestors and is cut-off event [2022-12-13 16:51:39,006 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 16:51:39,007 INFO L386 tUnfolder$Statistics]: existing Event has 46 ancestors and is cut-off event [2022-12-13 16:51:39,007 INFO L386 tUnfolder$Statistics]: existing Event has 57 ancestors and is cut-off event [2022-12-13 16:51:39,042 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][224], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 210#true, 263#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), 38#L1210true, Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, Black: 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), 199#true, 196#(= ~B~0 ~A~0)]) [2022-12-13 16:51:39,042 INFO L383 tUnfolder$Statistics]: this new event has 58 ancestors and is cut-off event [2022-12-13 16:51:39,042 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 16:51:39,042 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2022-12-13 16:51:39,042 INFO L386 tUnfolder$Statistics]: existing Event has 58 ancestors and is cut-off event [2022-12-13 16:51:39,066 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][226], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 210#true, 259#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 17#L1205-6true, 106#L1173true, 15#L1161true, Black: 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), 199#true, 196#(= ~B~0 ~A~0)]) [2022-12-13 16:51:39,066 INFO L383 tUnfolder$Statistics]: this new event has 59 ancestors and is cut-off event [2022-12-13 16:51:39,066 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 16:51:39,066 INFO L386 tUnfolder$Statistics]: existing Event has 48 ancestors and is cut-off event [2022-12-13 16:51:39,066 INFO L386 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-12-13 16:51:39,088 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][226], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 259#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 196#(= ~B~0 ~A~0), 89#L1206-1true, 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:39,088 INFO L383 tUnfolder$Statistics]: this new event has 60 ancestors and is cut-off event [2022-12-13 16:51:39,088 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 16:51:39,088 INFO L386 tUnfolder$Statistics]: existing Event has 49 ancestors and is cut-off event [2022-12-13 16:51:39,088 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-12-13 16:51:39,106 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][226], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 110#L1208true, 122#L1190true, disposeThread1of1ForFork2InUse, 259#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 196#(= ~B~0 ~A~0), 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:39,106 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-12-13 16:51:39,107 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2022-12-13 16:51:39,107 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2022-12-13 16:51:39,107 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-12-13 16:51:39,115 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][226], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 259#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, 199#true, 31#L19true, 196#(= ~B~0 ~A~0), 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1)]) [2022-12-13 16:51:39,115 INFO L383 tUnfolder$Statistics]: this new event has 62 ancestors and is cut-off event [2022-12-13 16:51:39,116 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 16:51:39,116 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-12-13 16:51:39,116 INFO L386 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-12-13 16:51:39,123 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][226], [Black: 191#(= |ULTIMATE.start_main_~i~1#1| 0), 170#true, processThread1of1ForFork0InUse, generateThread1of1ForFork1InUse, 122#L1190true, disposeThread1of1ForFork2InUse, 210#true, 259#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 201#(and (<= ~B~0 5) (<= 5 ~B~0)), Black: 202#(and (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 38#L1210true, Black: 204#(and (<= ~B~0 5) (< 4 |disposeThread1of1ForFork2_~p~0#1|) (<= 5 ~B~0) (<= |disposeThread1of1ForFork2_~p~0#1| 5)), 106#L1173true, 15#L1161true, Black: 212#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), 199#true, 196#(= ~B~0 ~A~0)]) [2022-12-13 16:51:39,123 INFO L383 tUnfolder$Statistics]: this new event has 63 ancestors and is cut-off event [2022-12-13 16:51:39,123 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-12-13 16:51:39,123 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-13 16:51:39,123 INFO L386 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-12-13 16:51:39,130 INFO L130 PetriNetUnfolder]: 154382/211770 cut-off events. [2022-12-13 16:51:39,130 INFO L131 PetriNetUnfolder]: For 188744/196095 co-relation queries the response was YES. [2022-12-13 16:51:39,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637064 conditions, 211770 events. 154382/211770 cut-off events. For 188744/196095 co-relation queries the response was YES. Maximal size of possible extension queue 3633. Compared 1421226 event pairs, 24224 based on Foata normal form. 7971/207904 useless extension candidates. Maximal degree in co-relation 637053. Up to 64342 conditions per place. [2022-12-13 16:51:40,309 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 207 selfloop transitions, 10 changer transitions 0/227 dead transitions. [2022-12-13 16:51:40,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 227 transitions, 1485 flow [2022-12-13 16:51:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:51:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:51:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1050 transitions. [2022-12-13 16:51:40,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2022-12-13 16:51:40,313 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1050 transitions. [2022-12-13 16:51:40,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1050 transitions. [2022-12-13 16:51:40,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:40,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1050 transitions. [2022-12-13 16:51:40,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:40,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:40,318 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:40,318 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 290 flow. Second operand 6 states and 1050 transitions. [2022-12-13 16:51:40,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 227 transitions, 1485 flow [2022-12-13 16:51:40,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 227 transitions, 1422 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:51:40,403 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 355 flow [2022-12-13 16:51:40,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2022-12-13 16:51:40,403 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2022-12-13 16:51:40,403 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 355 flow [2022-12-13 16:51:40,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.71428571428572) internal successors, (1076), 7 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:40,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:40,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:40,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:51:40,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 16:51:40,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1767726693, now seen corresponding path program 1 times [2022-12-13 16:51:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:40,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368399643] [2022-12-13 16:51:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:40,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:40,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368399643] [2022-12-13 16:51:40,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368399643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:40,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:40,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:51:40,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364299814] [2022-12-13 16:51:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:40,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:51:40,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:51:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:51:40,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2022-12-13 16:51:40,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:40,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:40,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2022-12-13 16:51:40,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:55,887 INFO L130 PetriNetUnfolder]: 173401/237786 cut-off events. [2022-12-13 16:51:55,887 INFO L131 PetriNetUnfolder]: For 283271/291973 co-relation queries the response was YES. [2022-12-13 16:51:56,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726502 conditions, 237786 events. 173401/237786 cut-off events. For 283271/291973 co-relation queries the response was YES. Maximal size of possible extension queue 3741. Compared 1586780 event pairs, 36052 based on Foata normal form. 4695/235152 useless extension candidates. Maximal degree in co-relation 726488. Up to 152610 conditions per place. [2022-12-13 16:51:57,265 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 175 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2022-12-13 16:51:57,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 196 transitions, 1454 flow [2022-12-13 16:51:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:51:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:51:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 861 transitions. [2022-12-13 16:51:57,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5298461538461539 [2022-12-13 16:51:57,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 861 transitions. [2022-12-13 16:51:57,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 861 transitions. [2022-12-13 16:51:57,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:51:57,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 861 transitions. [2022-12-13 16:51:57,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.2) internal successors, (861), 5 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:57,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:57,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:57,272 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 355 flow. Second operand 5 states and 861 transitions. [2022-12-13 16:51:57,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 196 transitions, 1454 flow [2022-12-13 16:51:57,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 196 transitions, 1394 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-12-13 16:51:57,930 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 450 flow [2022-12-13 16:51:57,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2022-12-13 16:51:57,930 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2022-12-13 16:51:57,930 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 450 flow [2022-12-13 16:51:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:57,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:51:57,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:51:57,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:51:57,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:51:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:51:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1451914804, now seen corresponding path program 1 times [2022-12-13 16:51:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:51:57,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192930218] [2022-12-13 16:51:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:51:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:51:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:51:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:51:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:51:58,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192930218] [2022-12-13 16:51:58,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192930218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:51:58,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:51:58,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:51:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385220025] [2022-12-13 16:51:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:51:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:51:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:51:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:51:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:51:58,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 325 [2022-12-13 16:51:58,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:51:58,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:51:58,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 325 [2022-12-13 16:51:58,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:51:59,901 INFO L130 PetriNetUnfolder]: 16171/25732 cut-off events. [2022-12-13 16:51:59,901 INFO L131 PetriNetUnfolder]: For 42675/43642 co-relation queries the response was YES. [2022-12-13 16:51:59,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80957 conditions, 25732 events. 16171/25732 cut-off events. For 42675/43642 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 167899 event pairs, 3327 based on Foata normal form. 4099/28921 useless extension candidates. Maximal degree in co-relation 80940. Up to 21112 conditions per place. [2022-12-13 16:52:00,051 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 57 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2022-12-13 16:52:00,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 581 flow [2022-12-13 16:52:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:52:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:52:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 648 transitions. [2022-12-13 16:52:00,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2022-12-13 16:52:00,053 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 648 transitions. [2022-12-13 16:52:00,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 648 transitions. [2022-12-13 16:52:00,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:00,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 648 transitions. [2022-12-13 16:52:00,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:00,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:00,056 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:00,056 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 450 flow. Second operand 4 states and 648 transitions. [2022-12-13 16:52:00,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 581 flow [2022-12-13 16:52:00,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 573 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 16:52:00,080 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 375 flow [2022-12-13 16:52:00,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2022-12-13 16:52:00,081 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2022-12-13 16:52:00,081 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 375 flow [2022-12-13 16:52:00,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:00,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:00,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:52:00,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:52:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1197128066, now seen corresponding path program 1 times [2022-12-13 16:52:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:00,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143290507] [2022-12-13 16:52:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:52:00,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:00,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143290507] [2022-12-13 16:52:00,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143290507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:00,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:00,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:52:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314407354] [2022-12-13 16:52:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:00,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:52:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:52:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:52:00,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 325 [2022-12-13 16:52:00,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:00,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:00,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 325 [2022-12-13 16:52:00,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:01,729 INFO L130 PetriNetUnfolder]: 10359/17015 cut-off events. [2022-12-13 16:52:01,729 INFO L131 PetriNetUnfolder]: For 25863/25936 co-relation queries the response was YES. [2022-12-13 16:52:01,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54945 conditions, 17015 events. 10359/17015 cut-off events. For 25863/25936 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 108389 event pairs, 2473 based on Foata normal form. 1380/17729 useless extension candidates. Maximal degree in co-relation 54927. Up to 9905 conditions per place. [2022-12-13 16:52:01,819 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 65 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2022-12-13 16:52:01,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 705 flow [2022-12-13 16:52:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:52:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:52:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2022-12-13 16:52:01,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48538461538461536 [2022-12-13 16:52:01,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2022-12-13 16:52:01,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2022-12-13 16:52:01,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:01,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2022-12-13 16:52:01,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:01,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:01,824 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:01,824 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 375 flow. Second operand 4 states and 631 transitions. [2022-12-13 16:52:01,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 705 flow [2022-12-13 16:52:01,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 674 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 16:52:01,866 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 389 flow [2022-12-13 16:52:01,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2022-12-13 16:52:01,867 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2022-12-13 16:52:01,867 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 389 flow [2022-12-13 16:52:01,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:01,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:01,867 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:52:01,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:52:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash 763007174, now seen corresponding path program 1 times [2022-12-13 16:52:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:01,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400767927] [2022-12-13 16:52:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:52:02,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:02,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400767927] [2022-12-13 16:52:02,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400767927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:02,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:02,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:52:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377222404] [2022-12-13 16:52:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:02,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:52:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:02,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:52:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:52:02,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2022-12-13 16:52:02,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 389 flow. Second operand has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:02,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:02,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2022-12-13 16:52:02,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:06,055 INFO L130 PetriNetUnfolder]: 27887/43300 cut-off events. [2022-12-13 16:52:06,055 INFO L131 PetriNetUnfolder]: For 73672/73673 co-relation queries the response was YES. [2022-12-13 16:52:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146675 conditions, 43300 events. 27887/43300 cut-off events. For 73672/73673 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 272330 event pairs, 5413 based on Foata normal form. 2096/43812 useless extension candidates. Maximal degree in co-relation 146657. Up to 9383 conditions per place. [2022-12-13 16:52:06,264 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 398 selfloop transitions, 64 changer transitions 0/464 dead transitions. [2022-12-13 16:52:06,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 464 transitions, 3618 flow [2022-12-13 16:52:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 16:52:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 16:52:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3653 transitions. [2022-12-13 16:52:06,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48869565217391303 [2022-12-13 16:52:06,270 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3653 transitions. [2022-12-13 16:52:06,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3653 transitions. [2022-12-13 16:52:06,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:06,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3653 transitions. [2022-12-13 16:52:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 158.82608695652175) internal successors, (3653), 23 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:06,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 325.0) internal successors, (7800), 24 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:06,283 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 325.0) internal successors, (7800), 24 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:06,283 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 389 flow. Second operand 23 states and 3653 transitions. [2022-12-13 16:52:06,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 464 transitions, 3618 flow [2022-12-13 16:52:06,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 464 transitions, 3512 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:52:06,396 INFO L231 Difference]: Finished difference. Result has 116 places, 120 transitions, 1092 flow [2022-12-13 16:52:06,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1092, PETRI_PLACES=116, PETRI_TRANSITIONS=120} [2022-12-13 16:52:06,397 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2022-12-13 16:52:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 120 transitions, 1092 flow [2022-12-13 16:52:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.375) internal successors, (1155), 8 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:06,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:06,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:06,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:52:06,397 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:52:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2040144017, now seen corresponding path program 1 times [2022-12-13 16:52:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:06,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541834389] [2022-12-13 16:52:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:06,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:52:06,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:06,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541834389] [2022-12-13 16:52:06,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541834389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:06,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:52:06,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:52:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495990795] [2022-12-13 16:52:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:06,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:52:06,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:06,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:52:06,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:52:06,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2022-12-13 16:52:06,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 120 transitions, 1092 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) [2022-12-13 16:52:06,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:06,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2022-12-13 16:52:06,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:10,638 INFO L130 PetriNetUnfolder]: 24025/38950 cut-off events. [2022-12-13 16:52:10,638 INFO L131 PetriNetUnfolder]: For 259778/261325 co-relation queries the response was YES. [2022-12-13 16:52:10,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171771 conditions, 38950 events. 24025/38950 cut-off events. For 259778/261325 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 264065 event pairs, 10913 based on Foata normal form. 1033/38463 useless extension candidates. Maximal degree in co-relation 171734. Up to 17194 conditions per place. [2022-12-13 16:52:10,920 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 141 selfloop transitions, 24 changer transitions 0/186 dead transitions. [2022-12-13 16:52:10,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 186 transitions, 1946 flow [2022-12-13 16:52:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:52:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:52:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 825 transitions. [2022-12-13 16:52:10,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2022-12-13 16:52:10,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 825 transitions. [2022-12-13 16:52:10,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 825 transitions. [2022-12-13 16:52:10,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:10,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 825 transitions. [2022-12-13 16:52:10,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:10,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:10,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:10,926 INFO L175 Difference]: Start difference. First operand has 116 places, 120 transitions, 1092 flow. Second operand 5 states and 825 transitions. [2022-12-13 16:52:10,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 186 transitions, 1946 flow [2022-12-13 16:52:11,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 186 transitions, 1918 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-12-13 16:52:11,671 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 1137 flow [2022-12-13 16:52:11,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1137, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2022-12-13 16:52:11,671 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2022-12-13 16:52:11,671 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 1137 flow [2022-12-13 16:52:11,672 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) [2022-12-13 16:52:11,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:11,672 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:11,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:52:11,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:52:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1239172879, now seen corresponding path program 2 times [2022-12-13 16:52:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:11,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674901739] [2022-12-13 16:52:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:52:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674901739] [2022-12-13 16:52:11,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674901739] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:52:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033562214] [2022-12-13 16:52:11,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:52:11,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:52:11,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:52:11,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:52:11,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:52:11,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:52:11,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:52:11,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 16:52:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:52:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 16:52:12,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:52:12,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033562214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:52:12,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:52:12,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 16:52:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68186484] [2022-12-13 16:52:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:52:12,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:52:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:52:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:52:12,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2022-12-13 16:52:12,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 1137 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:12,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:12,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2022-12-13 16:52:12,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:15,639 INFO L130 PetriNetUnfolder]: 17548/30302 cut-off events. [2022-12-13 16:52:15,639 INFO L131 PetriNetUnfolder]: For 222672/223743 co-relation queries the response was YES. [2022-12-13 16:52:15,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134327 conditions, 30302 events. 17548/30302 cut-off events. For 222672/223743 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 216989 event pairs, 10942 based on Foata normal form. 529/30646 useless extension candidates. Maximal degree in co-relation 134288. Up to 22777 conditions per place. [2022-12-13 16:52:15,889 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 143 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-12-13 16:52:15,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 182 transitions, 2064 flow [2022-12-13 16:52:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:52:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:52:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-12-13 16:52:15,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2022-12-13 16:52:15,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-12-13 16:52:15,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-12-13 16:52:15,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:15,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-12-13 16:52:15,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:15,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:15,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:15,893 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 1137 flow. Second operand 3 states and 485 transitions. [2022-12-13 16:52:15,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 182 transitions, 2064 flow [2022-12-13 16:52:16,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 182 transitions, 2020 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 16:52:16,409 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1106 flow [2022-12-13 16:52:16,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2022-12-13 16:52:16,410 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2022-12-13 16:52:16,410 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1106 flow [2022-12-13 16:52:16,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:16,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:52:16,410 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:16,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:52:16,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 16:52:16,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-12-13 16:52:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:52:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1439345641, now seen corresponding path program 1 times [2022-12-13 16:52:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:52:16,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103002145] [2022-12-13 16:52:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:52:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:52:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:52:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103002145] [2022-12-13 16:52:16,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103002145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:52:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610836782] [2022-12-13 16:52:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:52:16,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:52:16,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:52:16,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:52:16,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:52:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:52:17,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 16:52:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:52:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:52:17,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:52:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:52:17,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610836782] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:52:17,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:52:17,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-12-13 16:52:17,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197253261] [2022-12-13 16:52:17,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:52:17,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:52:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:52:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:52:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:52:17,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 325 [2022-12-13 16:52:17,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 1106 flow. Second operand has 9 states, 9 states have (on average 142.77777777777777) internal successors, (1285), 9 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:17,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:52:17,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 325 [2022-12-13 16:52:17,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:52:20,764 INFO L130 PetriNetUnfolder]: 17362/27747 cut-off events. [2022-12-13 16:52:20,765 INFO L131 PetriNetUnfolder]: For 202703/202704 co-relation queries the response was YES. [2022-12-13 16:52:20,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110325 conditions, 27747 events. 17362/27747 cut-off events. For 202703/202704 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 172237 event pairs, 4239 based on Foata normal form. 1842/29588 useless extension candidates. Maximal degree in co-relation 110286. Up to 9772 conditions per place. [2022-12-13 16:52:20,872 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 0 selfloop transitions, 0 changer transitions 271/271 dead transitions. [2022-12-13 16:52:20,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 271 transitions, 2700 flow [2022-12-13 16:52:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:52:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 16:52:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2423 transitions. [2022-12-13 16:52:20,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4659615384615385 [2022-12-13 16:52:20,876 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2423 transitions. [2022-12-13 16:52:20,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2423 transitions. [2022-12-13 16:52:20,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:52:20,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2423 transitions. [2022-12-13 16:52:20,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 151.4375) internal successors, (2423), 16 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:20,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:20,884 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:20,884 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1106 flow. Second operand 16 states and 2423 transitions. [2022-12-13 16:52:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 271 transitions, 2700 flow [2022-12-13 16:52:21,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 271 transitions, 2592 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-12-13 16:52:21,594 INFO L231 Difference]: Finished difference. Result has 125 places, 0 transitions, 0 flow [2022-12-13 16:52:21,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=125, PETRI_TRANSITIONS=0} [2022-12-13 16:52:21,595 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2022-12-13 16:52:21,595 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 0 transitions, 0 flow [2022-12-13 16:52:21,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 142.77777777777777) internal successors, (1285), 9 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:52:21,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2022-12-13 16:52:21,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-12-13 16:52:21,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-12-13 16:52:21,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-12-13 16:52:21,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-12-13 16:52:21,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (6 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (5 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 13 remaining) [2022-12-13 16:52:21,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2022-12-13 16:52:21,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:52:21,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 16:52:21,800 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:52:21,813 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:52:21,813 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:52:21,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:52:21 BasicIcfg [2022-12-13 16:52:21,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:52:21,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:52:21,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:52:21,823 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:52:21,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:51:02" (3/4) ... [2022-12-13 16:52:21,830 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:52:21,839 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure process [2022-12-13 16:52:21,839 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure dispose [2022-12-13 16:52:21,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure generate [2022-12-13 16:52:21,843 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 16:52:21,843 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:52:21,843 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 16:52:21,844 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:52:21,867 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:52:21,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:52:21,867 INFO L158 Benchmark]: Toolchain (without parser) took 80630.26ms. Allocated memory was 134.2MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 101.0MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. [2022-12-13 16:52:21,868 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:52:21,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.30ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 70.6MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-13 16:52:21,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.98ms. Allocated memory is still 134.2MB. Free memory was 70.6MB in the beginning and 68.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:52:21,868 INFO L158 Benchmark]: Boogie Preprocessor took 27.96ms. Allocated memory is still 134.2MB. Free memory was 68.0MB in the beginning and 65.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:52:21,868 INFO L158 Benchmark]: RCFGBuilder took 508.14ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 65.2MB in the beginning and 147.3MB in the end (delta: -82.1MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-12-13 16:52:21,868 INFO L158 Benchmark]: TraceAbstraction took 79626.62ms. Allocated memory was 184.5MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 146.3MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 6.2GB. Max. memory is 16.1GB. [2022-12-13 16:52:21,869 INFO L158 Benchmark]: Witness Printer took 44.95ms. Allocated memory is still 7.2GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:52:21,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 134.2MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.30ms. Allocated memory is still 134.2MB. Free memory was 101.0MB in the beginning and 70.6MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.98ms. Allocated memory is still 134.2MB. Free memory was 70.6MB in the beginning and 68.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.96ms. Allocated memory is still 134.2MB. Free memory was 68.0MB in the beginning and 65.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.14ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 65.2MB in the beginning and 147.3MB in the end (delta: -82.1MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. * TraceAbstraction took 79626.62ms. Allocated memory was 184.5MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 146.3MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 6.2GB. Max. memory is 16.1GB. * Witness Printer took 44.95ms. Allocated memory is still 7.2GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 164 PlacesBefore, 55 PlacesAfterwards, 166 TransitionsBefore, 51 TransitionsAfterwards, 10000 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 6 ChoiceCompositions, 156 TotalNumberOfCompositions, 19590 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9288, independent: 8969, independent conditional: 0, independent unconditional: 8969, dependent: 319, dependent conditional: 0, dependent unconditional: 319, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5011, independent: 4942, independent conditional: 0, independent unconditional: 4942, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9288, independent: 4027, independent conditional: 0, independent unconditional: 4027, dependent: 250, dependent conditional: 0, dependent unconditional: 250, unknown: 5011, unknown conditional: 0, unknown unconditional: 5011] , Statistics on independence cache: Total cache size (in pairs): 227, Positive cache size: 199, Positive conditional cache size: 0, Positive unconditional cache size: 199, 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: -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: 1199]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 226 locations, 13 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: 79.5s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 72.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1947 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1511 mSDsluCounter, 416 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 329 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3911 IncrementalHoareTripleChecker+Invalid, 4068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 87 mSDtfsCounter, 3911 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1137occurred in iteration=15, InterpolantAutomatonStates: 94, 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, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 296 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 318 ConstructedInterpolants, 27 QuantifiedInterpolants, 2651 SizeOfPredicates, 8 NumberOfNonLiveVariables, 632 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 22 InterpolantComputations, 15 PerfectInterpolantSequences, 52/95 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:52:21,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d613f99-1450-47b6-b72c-ced85e655646/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE