./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/sync01.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_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/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_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/sync01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/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_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- 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 14:44:03,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:44:03,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:44:03,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:44:03,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:44:03,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:44:03,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:44:03,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:44:03,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:44:03,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:44:03,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:44:03,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:44:03,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:44:03,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:44:03,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:44:03,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:44:03,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:44:03,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:44:03,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:44:03,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:44:03,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:44:03,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:44:03,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:44:03,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:44:03,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:44:03,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:44:03,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:44:03,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:44:03,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:44:03,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:44:03,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:44:03,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:44:03,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:44:03,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:44:03,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:44:03,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:44:03,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:44:03,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:44:03,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:44:03,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:44:03,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:44:03,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 14:44:03,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:44:03,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:44:03,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:44:03,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:44:03,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:44:03,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:44:03,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:44:03,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:44:03,542 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:44:03,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:44:03,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:44:03,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:44:03,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:44:03,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:44:03,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:44:03,554 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:44:03,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:44:03,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:44:03,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:44:03,556 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:44:03,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:44:03,557 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:44:03,557 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_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2022-12-13 14:44:03,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:44:03,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:44:03,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:44:03,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:44:03,738 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:44:03,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/sync01.i [2022-12-13 14:44:06,328 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:44:06,544 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:44:06,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/sv-benchmarks/c/pthread/sync01.i [2022-12-13 14:44:06,557 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/data/fff9a3d3c/e57fcdfde1b84ef9982b8c1c774e8608/FLAG8e42c5bab [2022-12-13 14:44:06,571 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/data/fff9a3d3c/e57fcdfde1b84ef9982b8c1c774e8608 [2022-12-13 14:44:06,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:44:06,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:44:06,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:44:06,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:44:06,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:44:06,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:44:06" (1/1) ... [2022-12-13 14:44:06,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c8fc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:06, skipping insertion in model container [2022-12-13 14:44:06,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:44:06" (1/1) ... [2022-12-13 14:44:06,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:44:06,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:44:07,021 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_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2022-12-13 14:44:07,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:44:07,035 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:44:07,064 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_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/sv-benchmarks/c/pthread/sync01.i[42004,42017] [2022-12-13 14:44:07,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:44:07,098 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:44:07,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07 WrapperNode [2022-12-13 14:44:07,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:44:07,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:44:07,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:44:07,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:44:07,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,131 INFO L138 Inliner]: procedures = 268, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-12-13 14:44:07,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:44:07,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:44:07,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:44:07,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:44:07,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:44:07,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:44:07,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:44:07,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:44:07,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (1/1) ... [2022-12-13 14:44:07,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:44:07,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:44:07,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:44:07,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:44:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:44:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:44:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:44:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:44:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:44:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:44:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:44:07,221 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 14:44:07,319 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:44:07,321 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:44:07,503 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:44:07,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:44:07,509 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 14:44:07,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:44:07 BoogieIcfgContainer [2022-12-13 14:44:07,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:44:07,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:44:07,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:44:07,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:44:07,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:44:06" (1/3) ... [2022-12-13 14:44:07,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edac514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:44:07, skipping insertion in model container [2022-12-13 14:44:07,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:44:07" (2/3) ... [2022-12-13 14:44:07,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2edac514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:44:07, skipping insertion in model container [2022-12-13 14:44:07,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:44:07" (3/3) ... [2022-12-13 14:44:07,518 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2022-12-13 14:44:07,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:44:07,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 14:44:07,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:44:07,580 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 14:44:07,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 254 flow [2022-12-13 14:44:07,644 INFO L130 PetriNetUnfolder]: 5/117 cut-off events. [2022-12-13 14:44:07,644 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:44:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 117 events. 5/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-12-13 14:44:07,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 119 transitions, 254 flow [2022-12-13 14:44:07,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 112 transitions, 236 flow [2022-12-13 14:44:07,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:44:07,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 112 transitions, 236 flow [2022-12-13 14:44:07,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 112 transitions, 236 flow [2022-12-13 14:44:07,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 112 transitions, 236 flow [2022-12-13 14:44:07,707 INFO L130 PetriNetUnfolder]: 5/112 cut-off events. [2022-12-13 14:44:07,708 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:44:07,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 5/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 105 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-12-13 14:44:07,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 1140 [2022-12-13 14:44:11,859 INFO L134 LiptonReduction]: Checked pairs total: 4098 [2022-12-13 14:44:11,860 INFO L136 LiptonReduction]: Total number of compositions: 97 [2022-12-13 14:44:11,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:44:11,881 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;@666d0367, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:44:11,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 14:44:11,882 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 14:44:11,882 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:44:11,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:11,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 14:44:11,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:11,888 INFO L85 PathProgramCache]: Analyzing trace with hash 421, now seen corresponding path program 1 times [2022-12-13 14:44:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:11,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164333112] [2022-12-13 14:44:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:11,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:11,982 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 14:44:11,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:11,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164333112] [2022-12-13 14:44:11,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164333112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:11,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:11,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 14:44:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50649720] [2022-12-13 14:44:11,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:11,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:44:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:44:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:44:12,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 216 [2022-12-13 14:44:12,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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 14:44:12,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:12,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 216 [2022-12-13 14:44:12,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:12,074 INFO L130 PetriNetUnfolder]: 145/309 cut-off events. [2022-12-13 14:44:12,074 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 14:44:12,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 309 events. 145/309 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1333 event pairs, 105 based on Foata normal form. 40/266 useless extension candidates. Maximal degree in co-relation 488. Up to 246 conditions per place. [2022-12-13 14:44:12,079 INFO L137 encePairwiseOnDemand]: 212/216 looper letters, 24 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-12-13 14:44:12,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 124 flow [2022-12-13 14:44:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:44:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:44:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-12-13 14:44:12,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2022-12-13 14:44:12,089 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-12-13 14:44:12,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-12-13 14:44:12,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:12,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-12-13 14:44:12,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 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 14:44:12,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 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 14:44:12,098 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 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 14:44:12,099 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 2 states and 250 transitions. [2022-12-13 14:44:12,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 124 flow [2022-12-13 14:44:12,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:44:12,103 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 68 flow [2022-12-13 14:44:12,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-12-13 14:44:12,106 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-12-13 14:44:12,107 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 68 flow [2022-12-13 14:44:12,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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 14:44:12,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:12,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:44:12,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:44:12,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 412975, now seen corresponding path program 1 times [2022-12-13 14:44:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:12,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461435795] [2022-12-13 14:44:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:12,231 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 14:44:12,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:12,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461435795] [2022-12-13 14:44:12,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461435795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:12,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:12,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:44:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061097022] [2022-12-13 14:44:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:12,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:44:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:44:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:44:12,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 216 [2022-12-13 14:44:12,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 14:44:12,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:12,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 216 [2022-12-13 14:44:12,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:12,323 INFO L130 PetriNetUnfolder]: 137/289 cut-off events. [2022-12-13 14:44:12,323 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:44:12,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 289 events. 137/289 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1238 event pairs, 99 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 523. Up to 228 conditions per place. [2022-12-13 14:44:12,326 INFO L137 encePairwiseOnDemand]: 212/216 looper letters, 20 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-12-13 14:44:12,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 108 flow [2022-12-13 14:44:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:44:12,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:44:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2022-12-13 14:44:12,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2022-12-13 14:44:12,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2022-12-13 14:44:12,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2022-12-13 14:44:12,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:12,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2022-12-13 14:44:12,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 14:44:12,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,333 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 68 flow. Second operand 3 states and 330 transitions. [2022-12-13 14:44:12,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 108 flow [2022-12-13 14:44:12,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:44:12,334 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2022-12-13 14:44:12,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-12-13 14:44:12,335 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2022-12-13 14:44:12,335 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2022-12-13 14:44:12,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 14:44:12,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:12,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:44:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:44:12,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash 412977, now seen corresponding path program 1 times [2022-12-13 14:44:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:12,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393920416] [2022-12-13 14:44:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:12,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:12,453 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 14:44:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393920416] [2022-12-13 14:44:12,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393920416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:12,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:12,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:44:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176093384] [2022-12-13 14:44:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:12,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:44:12,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:44:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:44:12,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 216 [2022-12-13 14:44:12,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 14:44:12,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:12,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 216 [2022-12-13 14:44:12,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:12,542 INFO L130 PetriNetUnfolder]: 129/269 cut-off events. [2022-12-13 14:44:12,542 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:44:12,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 269 events. 129/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1122 event pairs, 93 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 489. Up to 212 conditions per place. [2022-12-13 14:44:12,544 INFO L137 encePairwiseOnDemand]: 212/216 looper letters, 18 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-12-13 14:44:12,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2022-12-13 14:44:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:44:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:44:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-12-13 14:44:12,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2022-12-13 14:44:12,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-12-13 14:44:12,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-12-13 14:44:12,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:12,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-12-13 14:44:12,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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 14:44:12,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,551 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 340 transitions. [2022-12-13 14:44:12,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2022-12-13 14:44:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:44:12,552 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 64 flow [2022-12-13 14:44:12,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2022-12-13 14:44:12,553 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2022-12-13 14:44:12,553 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 64 flow [2022-12-13 14:44:12,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 14:44:12,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:12,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:44:12,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:44:12,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 396879351, now seen corresponding path program 1 times [2022-12-13 14:44:12,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:12,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420859859] [2022-12-13 14:44:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:12,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:12,663 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 14:44:12,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:12,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420859859] [2022-12-13 14:44:12,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420859859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:12,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:12,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:44:12,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636842554] [2022-12-13 14:44:12,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:12,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:44:12,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:12,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:44:12,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:44:12,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 216 [2022-12-13 14:44:12,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 14:44:12,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:12,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 216 [2022-12-13 14:44:12,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:12,738 INFO L130 PetriNetUnfolder]: 97/209 cut-off events. [2022-12-13 14:44:12,738 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:44:12,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 209 events. 97/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 791 event pairs, 69 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 381. Up to 164 conditions per place. [2022-12-13 14:44:12,740 INFO L137 encePairwiseOnDemand]: 213/216 looper letters, 17 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2022-12-13 14:44:12,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 100 flow [2022-12-13 14:44:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:44:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:44:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2022-12-13 14:44:12,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2022-12-13 14:44:12,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2022-12-13 14:44:12,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2022-12-13 14:44:12,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:12,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2022-12-13 14:44:12,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 14:44:12,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,745 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 64 flow. Second operand 3 states and 338 transitions. [2022-12-13 14:44:12,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 100 flow [2022-12-13 14:44:12,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:44:12,746 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 62 flow [2022-12-13 14:44:12,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2022-12-13 14:44:12,747 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-13 14:44:12,747 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 62 flow [2022-12-13 14:44:12,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 14:44:12,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:12,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:44:12,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:44:12,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:12,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash 396879350, now seen corresponding path program 1 times [2022-12-13 14:44:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:12,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322896061] [2022-12-13 14:44:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:12,824 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 14:44:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:12,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322896061] [2022-12-13 14:44:12,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322896061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:12,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:12,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:44:12,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793089931] [2022-12-13 14:44:12,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:12,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:44:12,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:12,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:44:12,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:44:12,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 216 [2022-12-13 14:44:12,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 14:44:12,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:12,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 216 [2022-12-13 14:44:12,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:12,921 INFO L130 PetriNetUnfolder]: 65/149 cut-off events. [2022-12-13 14:44:12,921 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:44:12,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 149 events. 65/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 493 event pairs, 45 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 273. Up to 116 conditions per place. [2022-12-13 14:44:12,922 INFO L137 encePairwiseOnDemand]: 213/216 looper letters, 16 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2022-12-13 14:44:12,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 96 flow [2022-12-13 14:44:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:44:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:44:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2022-12-13 14:44:12,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48302469135802467 [2022-12-13 14:44:12,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2022-12-13 14:44:12,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2022-12-13 14:44:12,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:12,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2022-12-13 14:44:12,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 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 14:44:12,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:12,926 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 62 flow. Second operand 3 states and 313 transitions. [2022-12-13 14:44:12,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 96 flow [2022-12-13 14:44:12,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:44:12,927 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 60 flow [2022-12-13 14:44:12,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2022-12-13 14:44:12,928 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-12-13 14:44:12,928 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 60 flow [2022-12-13 14:44:12,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 14:44:12,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:12,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:44:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:44:12,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:12,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:12,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1600573052, now seen corresponding path program 1 times [2022-12-13 14:44:12,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:12,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599936096] [2022-12-13 14:44:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:12,989 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 14:44:12,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:12,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599936096] [2022-12-13 14:44:12,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599936096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:12,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:12,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:44:12,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58685124] [2022-12-13 14:44:12,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:12,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:44:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:44:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:44:13,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 216 [2022-12-13 14:44:13,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 14:44:13,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:13,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 216 [2022-12-13 14:44:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:13,036 INFO L130 PetriNetUnfolder]: 39/95 cut-off events. [2022-12-13 14:44:13,036 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:44:13,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 95 events. 39/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 15 based on Foata normal form. 10/102 useless extension candidates. Maximal degree in co-relation 179. Up to 53 conditions per place. [2022-12-13 14:44:13,037 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 18 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2022-12-13 14:44:13,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 102 flow [2022-12-13 14:44:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:44:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:44:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2022-12-13 14:44:13,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2022-12-13 14:44:13,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2022-12-13 14:44:13,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2022-12-13 14:44:13,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:13,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2022-12-13 14:44:13,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 14:44:13,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:13,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:13,041 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 60 flow. Second operand 3 states and 332 transitions. [2022-12-13 14:44:13,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 102 flow [2022-12-13 14:44:13,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:44:13,043 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 61 flow [2022-12-13 14:44:13,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2022-12-13 14:44:13,043 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2022-12-13 14:44:13,043 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 61 flow [2022-12-13 14:44:13,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 14:44:13,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:13,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:44:13,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:44:13,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:13,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1168152618, now seen corresponding path program 2 times [2022-12-13 14:44:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:13,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687614033] [2022-12-13 14:44:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:13,122 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 14:44:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:13,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687614033] [2022-12-13 14:44:13,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687614033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:13,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:13,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:44:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324939604] [2022-12-13 14:44:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:44:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:44:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:44:13,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 216 [2022-12-13 14:44:13,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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 14:44:13,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:13,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 216 [2022-12-13 14:44:13,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:13,239 INFO L130 PetriNetUnfolder]: 51/119 cut-off events. [2022-12-13 14:44:13,239 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 14:44:13,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 119 events. 51/119 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 284 event pairs, 15 based on Foata normal form. 12/131 useless extension candidates. Maximal degree in co-relation 249. Up to 69 conditions per place. [2022-12-13 14:44:13,240 INFO L137 encePairwiseOnDemand]: 209/216 looper letters, 22 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2022-12-13 14:44:13,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 136 flow [2022-12-13 14:44:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:44:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:44:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2022-12-13 14:44:13,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-13 14:44:13,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2022-12-13 14:44:13,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2022-12-13 14:44:13,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:13,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2022-12-13 14:44:13,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 14:44:13,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 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 14:44:13,244 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 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 14:44:13,244 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 61 flow. Second operand 4 states and 396 transitions. [2022-12-13 14:44:13,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 136 flow [2022-12-13 14:44:13,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:44:13,245 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 96 flow [2022-12-13 14:44:13,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 14:44:13,246 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2022-12-13 14:44:13,246 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 96 flow [2022-12-13 14:44:13,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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 14:44:13,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:13,246 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:44:13,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:44:13,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 267985149, now seen corresponding path program 1 times [2022-12-13 14:44:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:13,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627029682] [2022-12-13 14:44:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:13,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:13,360 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 14:44:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:13,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627029682] [2022-12-13 14:44:13,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627029682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:13,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:13,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:44:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232227581] [2022-12-13 14:44:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:44:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:44:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:44:13,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 216 [2022-12-13 14:44:13,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 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 14:44:13,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:13,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 216 [2022-12-13 14:44:13,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:13,458 INFO L130 PetriNetUnfolder]: 46/108 cut-off events. [2022-12-13 14:44:13,458 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-13 14:44:13,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 108 events. 46/108 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 18 based on Foata normal form. 5/111 useless extension candidates. Maximal degree in co-relation 281. Up to 59 conditions per place. [2022-12-13 14:44:13,459 INFO L137 encePairwiseOnDemand]: 209/216 looper letters, 23 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2022-12-13 14:44:13,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 156 flow [2022-12-13 14:44:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:44:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:44:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2022-12-13 14:44:13,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2022-12-13 14:44:13,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 612 transitions. [2022-12-13 14:44:13,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 612 transitions. [2022-12-13 14:44:13,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:13,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 612 transitions. [2022-12-13 14:44:13,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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 14:44:13,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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 14:44:13,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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 14:44:13,466 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 96 flow. Second operand 6 states and 612 transitions. [2022-12-13 14:44:13,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 156 flow [2022-12-13 14:44:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:44:13,467 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 96 flow [2022-12-13 14:44:13,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2022-12-13 14:44:13,467 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2022-12-13 14:44:13,468 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 96 flow [2022-12-13 14:44:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 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 14:44:13,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:44:13,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:44:13,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:44:13,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 14:44:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1339517832, now seen corresponding path program 3 times [2022-12-13 14:44:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:13,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536739518] [2022-12-13 14:44:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:13,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:13,649 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 14:44:13,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:13,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536739518] [2022-12-13 14:44:13,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536739518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:13,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:44:13,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:44:13,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186925992] [2022-12-13 14:44:13,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:13,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:44:13,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:44:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:44:13,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 216 [2022-12-13 14:44:13,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 14:44:13,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:44:13,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 216 [2022-12-13 14:44:13,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:44:13,778 INFO L130 PetriNetUnfolder]: 36/97 cut-off events. [2022-12-13 14:44:13,778 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-13 14:44:13,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 97 events. 36/97 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 231 event pairs, 28 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 255. Up to 82 conditions per place. [2022-12-13 14:44:13,778 INFO L137 encePairwiseOnDemand]: 214/216 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2022-12-13 14:44:13,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 129 flow [2022-12-13 14:44:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:44:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:44:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2022-12-13 14:44:13,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2022-12-13 14:44:13,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2022-12-13 14:44:13,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2022-12-13 14:44:13,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:44:13,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2022-12-13 14:44:13,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 14:44:13,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:13,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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 14:44:13,782 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 96 flow. Second operand 3 states and 315 transitions. [2022-12-13 14:44:13,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 129 flow [2022-12-13 14:44:13,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 119 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 14:44:13,783 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2022-12-13 14:44:13,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2022-12-13 14:44:13,783 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-12-13 14:44:13,783 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2022-12-13 14:44:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 14:44:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-12-13 14:44:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 14:44:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 14:44:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 14:44:13,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 14:44:13,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 14:44:13,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:44:13,788 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-12-13 14:44:13,790 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:44:13,790 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:44:13,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:44:13 BasicIcfg [2022-12-13 14:44:13,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:44:13,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:44:13,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:44:13,793 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:44:13,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:44:07" (3/4) ... [2022-12-13 14:44:13,796 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:44:13,800 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 14:44:13,800 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 14:44:13,803 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 14:44:13,803 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:44:13,803 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 14:44:13,803 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:44:13,825 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:44:13,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:44:13,826 INFO L158 Benchmark]: Toolchain (without parser) took 7250.79ms. Allocated memory was 167.8MB in the beginning and 228.6MB in the end (delta: 60.8MB). Free memory was 132.5MB in the beginning and 95.4MB in the end (delta: 37.1MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,826 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:44:13,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.34ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 104.3MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.87ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 101.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,827 INFO L158 Benchmark]: Boogie Preprocessor took 32.60ms. Allocated memory is still 167.8MB. Free memory was 101.7MB in the beginning and 100.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,827 INFO L158 Benchmark]: RCFGBuilder took 346.01ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 83.9MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,827 INFO L158 Benchmark]: TraceAbstraction took 6279.92ms. Allocated memory was 167.8MB in the beginning and 228.6MB in the end (delta: 60.8MB). Free memory was 83.3MB in the beginning and 98.5MB in the end (delta: -15.2MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,828 INFO L158 Benchmark]: Witness Printer took 32.49ms. Allocated memory is still 228.6MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:44:13,829 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 167.8MB. Free memory is still 136.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.34ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 104.3MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.87ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 101.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.60ms. Allocated memory is still 167.8MB. Free memory was 101.7MB in the beginning and 100.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 346.01ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 83.9MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6279.92ms. Allocated memory was 167.8MB in the beginning and 228.6MB in the end (delta: 60.8MB). Free memory was 83.3MB in the beginning and 98.5MB in the end (delta: -15.2MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * Witness Printer took 32.49ms. Allocated memory is still 228.6MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 114 PlacesBefore, 39 PlacesAfterwards, 112 TransitionsBefore, 36 TransitionsAfterwards, 1140 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 97 TotalNumberOfCompositions, 4098 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1688, independent: 1510, independent conditional: 0, independent unconditional: 1510, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 578, independent: 545, independent conditional: 0, independent unconditional: 545, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1688, independent: 965, independent conditional: 0, independent unconditional: 965, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 578, unknown conditional: 0, unknown unconditional: 578] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, 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: -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: 966]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 953]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 145 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 636 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 327 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 794 IncrementalHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 103 mSDtfsCounter, 794 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=7, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 14:44:13,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aacc9d67-d7cb-4306-8ea0-804c249fdbcb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE