./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --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_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/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_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/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_c8937250-a587-4332-a2fe-40e675f0c40e/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 dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:37:23,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:37:23,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:37:23,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:37:23,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:37:23,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:37:23,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:37:23,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:37:23,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:37:23,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:37:23,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:37:23,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:37:23,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:37:23,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:37:23,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:37:23,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:37:23,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:37:23,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:37:23,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:37:23,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:37:23,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:37:23,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:37:23,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:37:23,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:37:23,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:37:23,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:37:23,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:37:23,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:37:23,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:37:23,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:37:23,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:37:23,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:37:23,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:37:23,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:37:23,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:37:23,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:37:23,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:37:23,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:37:23,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:37:23,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:37:23,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:37:23,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:37:23,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:37:23,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:37:23,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:37:23,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:37:23,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:37:23,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:37:23,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:37:23,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:37:23,458 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:37:23,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:37:23,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:37:23,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:37:23,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:37:23,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:37:23,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:37:23,459 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:37:23,459 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:37:23,460 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:37:23,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:37:23,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:37:23,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:37:23,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:37:23,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:37:23,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:37:23,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:37:23,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:37:23,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:37:23,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:37:23,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:37:23,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:37:23,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:37:23,462 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:37:23,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:37:23,462 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:37:23,462 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_c8937250-a587-4332-a2fe-40e675f0c40e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f [2022-12-13 11:37:23,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:37:23,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:37:23,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:37:23,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:37:23,674 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:37:23,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-12-13 11:37:26,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:37:26,471 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:37:26,471 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-12-13 11:37:26,476 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/data/793016fcc/58414bb97f82470bae9d5c87e8285f52/FLAG072c7f5e9 [2022-12-13 11:37:26,488 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/data/793016fcc/58414bb97f82470bae9d5c87e8285f52 [2022-12-13 11:37:26,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:37:26,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:37:26,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:37:26,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:37:26,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:37:26,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fa5644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26, skipping insertion in model container [2022-12-13 11:37:26,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:37:26,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:37:26,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:37:26,620 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:37:26,622 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:37:26,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:37:26,628 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_c8937250-a587-4332-a2fe-40e675f0c40e/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-12-13 11:37:26,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:37:26,639 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:37:26,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:37:26,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:37:26,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:37:26,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:37:26,653 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_c8937250-a587-4332-a2fe-40e675f0c40e/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-12-13 11:37:26,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:37:26,664 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:37:26,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26 WrapperNode [2022-12-13 11:37:26,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:37:26,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:37:26,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:37:26,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:37:26,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,689 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-13 11:37:26,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:37:26,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:37:26,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:37:26,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:37:26,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:37:26,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:37:26,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:37:26,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:37:26,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (1/1) ... [2022-12-13 11:37:26,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:37:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:26,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:37:26,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:37:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:37:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:37:26,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:37:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:37:26,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:37:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:37:26,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:37:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:37:26,763 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:37:26,834 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:37:26,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:37:26,991 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:37:27,019 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:37:27,019 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:37:27,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:37:27 BoogieIcfgContainer [2022-12-13 11:37:27,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:37:27,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:37:27,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:37:27,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:37:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:37:26" (1/3) ... [2022-12-13 11:37:27,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee08a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:37:27, skipping insertion in model container [2022-12-13 11:37:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:37:26" (2/3) ... [2022-12-13 11:37:27,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee08a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:37:27, skipping insertion in model container [2022-12-13 11:37:27,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:37:27" (3/3) ... [2022-12-13 11:37:27,028 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-12-13 11:37:27,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:37:27,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-13 11:37:27,042 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:37:27,086 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:37:27,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-12-13 11:37:27,148 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-12-13 11:37:27,148 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:37:27,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-13 11:37:27,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-12-13 11:37:27,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 91 transitions, 194 flow [2022-12-13 11:37:27,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:37:27,166 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 91 transitions, 194 flow [2022-12-13 11:37:27,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 91 transitions, 194 flow [2022-12-13 11:37:27,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 194 flow [2022-12-13 11:37:27,198 INFO L130 PetriNetUnfolder]: 6/91 cut-off events. [2022-12-13 11:37:27,198 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:37:27,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 6/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-13 11:37:27,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2022-12-13 11:37:29,556 INFO L134 LiptonReduction]: Checked pairs total: 633 [2022-12-13 11:37:29,556 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-12-13 11:37:29,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:37:29,571 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;@c9c9945, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:37:29,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 11:37:29,572 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:37:29,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:37:29,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:29,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 11:37:29,573 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 11:37:29,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash 387, now seen corresponding path program 1 times [2022-12-13 11:37:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:29,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475703420] [2022-12-13 11:37:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:29,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:29,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475703420] [2022-12-13 11:37:29,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475703420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:29,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:29,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 11:37:29,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559075859] [2022-12-13 11:37:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:29,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:37:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:37:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:37:29,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2022-12-13 11:37:29,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:29,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2022-12-13 11:37:29,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:29,731 INFO L130 PetriNetUnfolder]: 106/169 cut-off events. [2022-12-13 11:37:29,731 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 11:37:29,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 169 events. 106/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 529 event pairs, 45 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 277. Up to 167 conditions per place. [2022-12-13 11:37:29,733 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-12-13 11:37:29,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2022-12-13 11:37:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:37:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:37:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2022-12-13 11:37:29,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5130890052356021 [2022-12-13 11:37:29,743 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2022-12-13 11:37:29,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2022-12-13 11:37:29,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:29,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2022-12-13 11:37:29,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,751 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,753 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 196 transitions. [2022-12-13 11:37:29,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2022-12-13 11:37:29,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:37:29,756 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2022-12-13 11:37:29,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2022-12-13 11:37:29,760 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-12-13 11:37:29,760 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2022-12-13 11:37:29,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:29,761 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:37:29,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:37:29,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:29,762 INFO L85 PathProgramCache]: Analyzing trace with hash 379409, now seen corresponding path program 1 times [2022-12-13 11:37:29,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:29,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119438847] [2022-12-13 11:37:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:29,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119438847] [2022-12-13 11:37:29,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119438847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:29,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:29,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:37:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767519128] [2022-12-13 11:37:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:29,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:37:29,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:37:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:37:29,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 191 [2022-12-13 11:37:29,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:29,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 191 [2022-12-13 11:37:29,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:29,965 INFO L130 PetriNetUnfolder]: 99/156 cut-off events. [2022-12-13 11:37:29,965 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:37:29,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 156 events. 99/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 482 event pairs, 42 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2022-12-13 11:37:29,967 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2022-12-13 11:37:29,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2022-12-13 11:37:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:37:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2022-12-13 11:37:29,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.462478184991274 [2022-12-13 11:37:29,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2022-12-13 11:37:29,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2022-12-13 11:37:29,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:29,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2022-12-13 11:37:29,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,974 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 265 transitions. [2022-12-13 11:37:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2022-12-13 11:37:29,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:37:29,974 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2022-12-13 11:37:29,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2022-12-13 11:37:29,975 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2022-12-13 11:37:29,975 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2022-12-13 11:37:29,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:29,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:29,975 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:37:29,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:37:29,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash 379408, now seen corresponding path program 1 times [2022-12-13 11:37:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:29,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830128563] [2022-12-13 11:37:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:30,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830128563] [2022-12-13 11:37:30,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830128563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:30,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:30,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:37:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096559144] [2022-12-13 11:37:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:30,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:37:30,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:37:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:37:30,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 191 [2022-12-13 11:37:30,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:30,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 191 [2022-12-13 11:37:30,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:30,080 INFO L130 PetriNetUnfolder]: 92/143 cut-off events. [2022-12-13 11:37:30,080 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:37:30,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 92/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 438 event pairs, 39 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 288. Up to 140 conditions per place. [2022-12-13 11:37:30,082 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-12-13 11:37:30,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2022-12-13 11:37:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:37:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2022-12-13 11:37:30,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43804537521815007 [2022-12-13 11:37:30,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2022-12-13 11:37:30,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2022-12-13 11:37:30,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:30,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2022-12-13 11:37:30,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,088 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 251 transitions. [2022-12-13 11:37:30,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2022-12-13 11:37:30,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:37:30,088 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2022-12-13 11:37:30,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-12-13 11:37:30,089 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 11:37:30,089 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2022-12-13 11:37:30,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:30,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:37:30,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:37:30,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 364621381, now seen corresponding path program 1 times [2022-12-13 11:37:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:30,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947950650] [2022-12-13 11:37:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:30,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947950650] [2022-12-13 11:37:30,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947950650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:30,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:30,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:37:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859020935] [2022-12-13 11:37:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:30,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:37:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:37:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:37:30,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 191 [2022-12-13 11:37:30,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:30,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 191 [2022-12-13 11:37:30,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:30,254 INFO L130 PetriNetUnfolder]: 70/112 cut-off events. [2022-12-13 11:37:30,254 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:37:30,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 112 events. 70/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 294 event pairs, 29 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 227. Up to 109 conditions per place. [2022-12-13 11:37:30,255 INFO L137 encePairwiseOnDemand]: 189/191 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-12-13 11:37:30,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2022-12-13 11:37:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:37:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 11:37:30,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41361256544502617 [2022-12-13 11:37:30,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 11:37:30,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 11:37:30,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:30,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 11:37:30,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,260 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 237 transitions. [2022-12-13 11:37:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2022-12-13 11:37:30,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:37:30,261 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2022-12-13 11:37:30,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2022-12-13 11:37:30,262 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 11:37:30,262 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2022-12-13 11:37:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:30,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:37:30,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:37:30,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 364621382, now seen corresponding path program 1 times [2022-12-13 11:37:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195759247] [2022-12-13 11:37:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195759247] [2022-12-13 11:37:30,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195759247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:30,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:30,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:37:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471444235] [2022-12-13 11:37:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:30,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:37:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:30,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:37:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:37:30,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 191 [2022-12-13 11:37:30,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 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 11:37:30,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:30,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 191 [2022-12-13 11:37:30,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:30,422 INFO L130 PetriNetUnfolder]: 48/81 cut-off events. [2022-12-13 11:37:30,422 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:37:30,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 48/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 186 event pairs, 19 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 166. Up to 78 conditions per place. [2022-12-13 11:37:30,423 INFO L137 encePairwiseOnDemand]: 189/191 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-12-13 11:37:30,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2022-12-13 11:37:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:37:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-12-13 11:37:30,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4432809773123909 [2022-12-13 11:37:30,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-12-13 11:37:30,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-12-13 11:37:30,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:30,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-12-13 11:37:30,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,428 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 254 transitions. [2022-12-13 11:37:30,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2022-12-13 11:37:30,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:37:30,429 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2022-12-13 11:37:30,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2022-12-13 11:37:30,429 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 11:37:30,429 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2022-12-13 11:37:30,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 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 11:37:30,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:30,430 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:37:30,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 469016346, now seen corresponding path program 1 times [2022-12-13 11:37:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:30,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201650916] [2022-12-13 11:37:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:30,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201650916] [2022-12-13 11:37:30,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201650916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:30,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:30,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:37:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588752271] [2022-12-13 11:37:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:30,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:37:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:37:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:37:30,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 191 [2022-12-13 11:37:30,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:30,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 191 [2022-12-13 11:37:30,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:30,579 INFO L130 PetriNetUnfolder]: 59/100 cut-off events. [2022-12-13 11:37:30,579 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:37:30,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 100 events. 59/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 23 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 207. Up to 78 conditions per place. [2022-12-13 11:37:30,580 INFO L137 encePairwiseOnDemand]: 187/191 looper letters, 17 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2022-12-13 11:37:30,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 92 flow [2022-12-13 11:37:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:37:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:37:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-12-13 11:37:30,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4620418848167539 [2022-12-13 11:37:30,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2022-12-13 11:37:30,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2022-12-13 11:37:30,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:30,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2022-12-13 11:37:30,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,585 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,586 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 4 states and 353 transitions. [2022-12-13 11:37:30,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 92 flow [2022-12-13 11:37:30,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:37:30,587 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 52 flow [2022-12-13 11:37:30,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2022-12-13 11:37:30,587 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2022-12-13 11:37:30,588 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 52 flow [2022-12-13 11:37:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:30,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:30,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:37:30,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1888455912, now seen corresponding path program 1 times [2022-12-13 11:37:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:30,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110978054] [2022-12-13 11:37:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:30,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:30,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110978054] [2022-12-13 11:37:30,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110978054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939377373] [2022-12-13 11:37:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:30,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:30,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:30,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:37:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:30,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:37:30,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:30,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939377373] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:30,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:30,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-12-13 11:37:30,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969505298] [2022-12-13 11:37:30,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:30,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:37:30,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:37:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:37:30,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 191 [2022-12-13 11:37:30,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:30,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 191 [2022-12-13 11:37:30,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:30,902 INFO L130 PetriNetUnfolder]: 73/133 cut-off events. [2022-12-13 11:37:30,902 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-12-13 11:37:30,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 133 events. 73/133 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 362 event pairs, 17 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 335. Up to 79 conditions per place. [2022-12-13 11:37:30,903 INFO L137 encePairwiseOnDemand]: 187/191 looper letters, 25 selfloop transitions, 5 changer transitions 6/37 dead transitions. [2022-12-13 11:37:30,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 180 flow [2022-12-13 11:37:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:37:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:37:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2022-12-13 11:37:30,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46282722513089003 [2022-12-13 11:37:30,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2022-12-13 11:37:30,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2022-12-13 11:37:30,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:30,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2022-12-13 11:37:30,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,909 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,909 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 52 flow. Second operand 5 states and 442 transitions. [2022-12-13 11:37:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 180 flow [2022-12-13 11:37:30,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 170 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 11:37:30,911 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 85 flow [2022-12-13 11:37:30,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2022-12-13 11:37:30,912 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2022-12-13 11:37:30,912 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 85 flow [2022-12-13 11:37:30,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:30,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:30,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:30,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:37:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:31,113 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 11:37:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1839507332, now seen corresponding path program 1 times [2022-12-13 11:37:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342865103] [2022-12-13 11:37:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:31,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342865103] [2022-12-13 11:37:31,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342865103] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:31,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923095190] [2022-12-13 11:37:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:31,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:31,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:37:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:31,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:31,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:31,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923095190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:31,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:31,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 11:37:31,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347397410] [2022-12-13 11:37:31,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:31,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:37:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:37:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:37:31,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:31,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 85 flow. Second operand has 19 states, 19 states have (on average 76.78947368421052) internal successors, (1459), 19 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:31,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:31,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:31,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:33,063 INFO L130 PetriNetUnfolder]: 293/542 cut-off events. [2022-12-13 11:37:33,063 INFO L131 PetriNetUnfolder]: For 445/445 co-relation queries the response was YES. [2022-12-13 11:37:33,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 542 events. 293/542 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2363 event pairs, 5 based on Foata normal form. 4/546 useless extension candidates. Maximal degree in co-relation 1691. Up to 197 conditions per place. [2022-12-13 11:37:33,066 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 90 selfloop transitions, 39 changer transitions 72/201 dead transitions. [2022-12-13 11:37:33,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 201 transitions, 1138 flow [2022-12-13 11:37:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 11:37:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 11:37:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2825 transitions. [2022-12-13 11:37:33,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4225878833208676 [2022-12-13 11:37:33,070 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2825 transitions. [2022-12-13 11:37:33,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2825 transitions. [2022-12-13 11:37:33,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:33,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2825 transitions. [2022-12-13 11:37:33,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 80.71428571428571) internal successors, (2825), 35 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:33,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 191.0) internal successors, (6876), 36 states have internal predecessors, (6876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:33,082 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 191.0) internal successors, (6876), 36 states have internal predecessors, (6876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:33,082 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 85 flow. Second operand 35 states and 2825 transitions. [2022-12-13 11:37:33,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 201 transitions, 1138 flow [2022-12-13 11:37:33,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 201 transitions, 1105 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 11:37:33,086 INFO L231 Difference]: Finished difference. Result has 85 places, 57 transitions, 453 flow [2022-12-13 11:37:33,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=453, PETRI_PLACES=85, PETRI_TRANSITIONS=57} [2022-12-13 11:37:33,087 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2022-12-13 11:37:33,087 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 57 transitions, 453 flow [2022-12-13 11:37:33,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.78947368421052) internal successors, (1459), 19 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:33,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:33,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:33,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:37:33,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:33,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:33,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash 696790580, now seen corresponding path program 2 times [2022-12-13 11:37:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:33,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944480625] [2022-12-13 11:37:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:33,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:33,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:33,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944480625] [2022-12-13 11:37:33,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944480625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:33,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132887623] [2022-12-13 11:37:33,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:37:33,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:33,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:33,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:33,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:37:33,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:33,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:33,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:33,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:33,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:33,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132887623] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:33,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:33,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 11:37:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961961519] [2022-12-13 11:37:33,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:37:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:37:33,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:37:33,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:33,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 57 transitions, 453 flow. Second operand has 19 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:33,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:33,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:33,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:34,931 INFO L130 PetriNetUnfolder]: 342/653 cut-off events. [2022-12-13 11:37:34,931 INFO L131 PetriNetUnfolder]: For 6222/6222 co-relation queries the response was YES. [2022-12-13 11:37:34,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 653 events. 342/653 cut-off events. For 6222/6222 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3042 event pairs, 58 based on Foata normal form. 4/657 useless extension candidates. Maximal degree in co-relation 3676. Up to 312 conditions per place. [2022-12-13 11:37:34,938 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 95 selfloop transitions, 34 changer transitions 74/203 dead transitions. [2022-12-13 11:37:34,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 203 transitions, 1946 flow [2022-12-13 11:37:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 11:37:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-13 11:37:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2500 transitions. [2022-12-13 11:37:34,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.422225975342003 [2022-12-13 11:37:34,945 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2500 transitions. [2022-12-13 11:37:34,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2500 transitions. [2022-12-13 11:37:34,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:34,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2500 transitions. [2022-12-13 11:37:34,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 80.64516129032258) internal successors, (2500), 31 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 191.0) internal successors, (6112), 32 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,962 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 191.0) internal successors, (6112), 32 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,962 INFO L175 Difference]: Start difference. First operand has 85 places, 57 transitions, 453 flow. Second operand 31 states and 2500 transitions. [2022-12-13 11:37:34,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 203 transitions, 1946 flow [2022-12-13 11:37:34,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 203 transitions, 1680 flow, removed 123 selfloop flow, removed 9 redundant places. [2022-12-13 11:37:34,992 INFO L231 Difference]: Finished difference. Result has 114 places, 81 transitions, 690 flow [2022-12-13 11:37:34,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=690, PETRI_PLACES=114, PETRI_TRANSITIONS=81} [2022-12-13 11:37:34,992 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2022-12-13 11:37:34,993 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 81 transitions, 690 flow [2022-12-13 11:37:34,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:34,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:34,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:37:35,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:35,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1986396388, now seen corresponding path program 3 times [2022-12-13 11:37:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:35,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403918981] [2022-12-13 11:37:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:35,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:35,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403918981] [2022-12-13 11:37:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403918981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105911403] [2022-12-13 11:37:35,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:37:35,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:35,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:35,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:37:35,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 11:37:35,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:35,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:35,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:35,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:35,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105911403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:35,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:35,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 11:37:35,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331713394] [2022-12-13 11:37:35,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:35,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:37:35,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:37:35,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:37:35,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:35,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 81 transitions, 690 flow. Second operand has 20 states, 20 states have (on average 76.8) internal successors, (1536), 20 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:35,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:35,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:35,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:36,336 INFO L130 PetriNetUnfolder]: 288/569 cut-off events. [2022-12-13 11:37:36,336 INFO L131 PetriNetUnfolder]: For 7768/7768 co-relation queries the response was YES. [2022-12-13 11:37:36,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 569 events. 288/569 cut-off events. For 7768/7768 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2682 event pairs, 21 based on Foata normal form. 3/572 useless extension candidates. Maximal degree in co-relation 3479. Up to 221 conditions per place. [2022-12-13 11:37:36,341 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 70 selfloop transitions, 48 changer transitions 40/158 dead transitions. [2022-12-13 11:37:36,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 158 transitions, 1522 flow [2022-12-13 11:37:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 11:37:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 11:37:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1379 transitions. [2022-12-13 11:37:36,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4246997228210656 [2022-12-13 11:37:36,345 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1379 transitions. [2022-12-13 11:37:36,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1379 transitions. [2022-12-13 11:37:36,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:36,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1379 transitions. [2022-12-13 11:37:36,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 81.11764705882354) internal successors, (1379), 17 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:36,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:36,354 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:36,354 INFO L175 Difference]: Start difference. First operand has 114 places, 81 transitions, 690 flow. Second operand 17 states and 1379 transitions. [2022-12-13 11:37:36,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 158 transitions, 1522 flow [2022-12-13 11:37:36,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 158 transitions, 1288 flow, removed 109 selfloop flow, removed 11 redundant places. [2022-12-13 11:37:36,384 INFO L231 Difference]: Finished difference. Result has 121 places, 89 transitions, 787 flow [2022-12-13 11:37:36,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=787, PETRI_PLACES=121, PETRI_TRANSITIONS=89} [2022-12-13 11:37:36,385 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2022-12-13 11:37:36,385 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 89 transitions, 787 flow [2022-12-13 11:37:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 76.8) internal successors, (1536), 20 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:36,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:36,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:36,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:37:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:36,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1417174436, now seen corresponding path program 4 times [2022-12-13 11:37:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:36,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669016927] [2022-12-13 11:37:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:36,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:36,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669016927] [2022-12-13 11:37:36,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669016927] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:36,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840320206] [2022-12-13 11:37:36,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:37:36,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:36,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:36,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:36,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:37:36,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:37:36,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:36,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:36,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:36,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:37,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840320206] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:37,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:37,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 11:37:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950543853] [2022-12-13 11:37:37,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:37:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:37:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:37:37,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:37,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 89 transitions, 787 flow. Second operand has 20 states, 20 states have (on average 76.85) internal successors, (1537), 20 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:37,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:37,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:37,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:37,633 INFO L130 PetriNetUnfolder]: 314/624 cut-off events. [2022-12-13 11:37:37,633 INFO L131 PetriNetUnfolder]: For 8955/8955 co-relation queries the response was YES. [2022-12-13 11:37:37,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 624 events. 314/624 cut-off events. For 8955/8955 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3048 event pairs, 25 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4038. Up to 221 conditions per place. [2022-12-13 11:37:37,637 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 74 selfloop transitions, 50 changer transitions 49/173 dead transitions. [2022-12-13 11:37:37,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 173 transitions, 1824 flow [2022-12-13 11:37:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:37:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 11:37:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1618 transitions. [2022-12-13 11:37:37,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4235602094240838 [2022-12-13 11:37:37,639 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1618 transitions. [2022-12-13 11:37:37,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1618 transitions. [2022-12-13 11:37:37,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:37,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1618 transitions. [2022-12-13 11:37:37,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 80.9) internal successors, (1618), 20 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:37,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 191.0) internal successors, (4011), 21 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:37,644 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 191.0) internal successors, (4011), 21 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:37,644 INFO L175 Difference]: Start difference. First operand has 121 places, 89 transitions, 787 flow. Second operand 20 states and 1618 transitions. [2022-12-13 11:37:37,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 173 transitions, 1824 flow [2022-12-13 11:37:37,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 173 transitions, 1609 flow, removed 91 selfloop flow, removed 9 redundant places. [2022-12-13 11:37:37,667 INFO L231 Difference]: Finished difference. Result has 132 places, 89 transitions, 829 flow [2022-12-13 11:37:37,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=829, PETRI_PLACES=132, PETRI_TRANSITIONS=89} [2022-12-13 11:37:37,668 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2022-12-13 11:37:37,668 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 89 transitions, 829 flow [2022-12-13 11:37:37,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 76.85) internal successors, (1537), 20 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:37,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:37,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:37,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:37:37,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:37,870 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:37,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1217721232, now seen corresponding path program 5 times [2022-12-13 11:37:37,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:37,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136610937] [2022-12-13 11:37:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:37,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:38,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136610937] [2022-12-13 11:37:38,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136610937] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:38,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537332835] [2022-12-13 11:37:38,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:37:38,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:38,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:38,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:37:38,101 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 11:37:38,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:38,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:38,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:38,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:38,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537332835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:38,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:38,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 11:37:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845613633] [2022-12-13 11:37:38,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:38,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:37:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:37:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:37:38,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:38,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 89 transitions, 829 flow. Second operand has 20 states, 20 states have (on average 76.8) internal successors, (1536), 20 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:38,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:38,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:38,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:38,990 INFO L130 PetriNetUnfolder]: 291/605 cut-off events. [2022-12-13 11:37:38,991 INFO L131 PetriNetUnfolder]: For 7861/7861 co-relation queries the response was YES. [2022-12-13 11:37:38,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 605 events. 291/605 cut-off events. For 7861/7861 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3075 event pairs, 25 based on Foata normal form. 3/606 useless extension candidates. Maximal degree in co-relation 3741. Up to 229 conditions per place. [2022-12-13 11:37:38,994 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 95 selfloop transitions, 62 changer transitions 24/181 dead transitions. [2022-12-13 11:37:38,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 181 transitions, 1933 flow [2022-12-13 11:37:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:37:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 11:37:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1771 transitions. [2022-12-13 11:37:38,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4214659685863874 [2022-12-13 11:37:38,996 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1771 transitions. [2022-12-13 11:37:38,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1771 transitions. [2022-12-13 11:37:38,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:38,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1771 transitions. [2022-12-13 11:37:38,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 80.5) internal successors, (1771), 22 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:39,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 191.0) internal successors, (4393), 23 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:39,002 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 191.0) internal successors, (4393), 23 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:39,002 INFO L175 Difference]: Start difference. First operand has 132 places, 89 transitions, 829 flow. Second operand 22 states and 1771 transitions. [2022-12-13 11:37:39,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 181 transitions, 1933 flow [2022-12-13 11:37:39,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 1570 flow, removed 103 selfloop flow, removed 25 redundant places. [2022-12-13 11:37:39,022 INFO L231 Difference]: Finished difference. Result has 127 places, 105 transitions, 980 flow [2022-12-13 11:37:39,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=980, PETRI_PLACES=127, PETRI_TRANSITIONS=105} [2022-12-13 11:37:39,022 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2022-12-13 11:37:39,023 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 105 transitions, 980 flow [2022-12-13 11:37:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 76.8) internal successors, (1536), 20 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:39,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:39,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:39,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:37:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:37:39,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash -270226806, now seen corresponding path program 6 times [2022-12-13 11:37:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:39,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117035902] [2022-12-13 11:37:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:39,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:39,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117035902] [2022-12-13 11:37:39,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117035902] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:39,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95390636] [2022-12-13 11:37:39,408 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:37:39,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:39,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:39,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:39,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:37:39,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 11:37:39,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:39,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:39,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:39,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:39,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95390636] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:39,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:39,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 11:37:39,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88257660] [2022-12-13 11:37:39,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:39,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:37:39,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:39,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:37:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:37:39,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:39,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 105 transitions, 980 flow. Second operand has 20 states, 20 states have (on average 76.85) internal successors, (1537), 20 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:39,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:39,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:39,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:40,344 INFO L130 PetriNetUnfolder]: 284/576 cut-off events. [2022-12-13 11:37:40,345 INFO L131 PetriNetUnfolder]: For 6004/6004 co-relation queries the response was YES. [2022-12-13 11:37:40,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 576 events. 284/576 cut-off events. For 6004/6004 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2802 event pairs, 37 based on Foata normal form. 5/579 useless extension candidates. Maximal degree in co-relation 3413. Up to 229 conditions per place. [2022-12-13 11:37:40,348 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 81 selfloop transitions, 59 changer transitions 34/174 dead transitions. [2022-12-13 11:37:40,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 174 transitions, 1834 flow [2022-12-13 11:37:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 11:37:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 11:37:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1690 transitions. [2022-12-13 11:37:40,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42134131139366743 [2022-12-13 11:37:40,350 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1690 transitions. [2022-12-13 11:37:40,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1690 transitions. [2022-12-13 11:37:40,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:40,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1690 transitions. [2022-12-13 11:37:40,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.47619047619048) internal successors, (1690), 21 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:40,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 191.0) internal successors, (4202), 22 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:40,355 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 191.0) internal successors, (4202), 22 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:40,355 INFO L175 Difference]: Start difference. First operand has 127 places, 105 transitions, 980 flow. Second operand 21 states and 1690 transitions. [2022-12-13 11:37:40,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 174 transitions, 1834 flow [2022-12-13 11:37:40,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 174 transitions, 1648 flow, removed 65 selfloop flow, removed 11 redundant places. [2022-12-13 11:37:40,372 INFO L231 Difference]: Finished difference. Result has 138 places, 103 transitions, 941 flow [2022-12-13 11:37:40,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=941, PETRI_PLACES=138, PETRI_TRANSITIONS=103} [2022-12-13 11:37:40,372 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2022-12-13 11:37:40,373 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 103 transitions, 941 flow [2022-12-13 11:37:40,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 76.85) internal successors, (1537), 20 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:40,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:40,373 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:40,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:37:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 11:37:40,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1191463472, now seen corresponding path program 7 times [2022-12-13 11:37:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766920976] [2022-12-13 11:37:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766920976] [2022-12-13 11:37:40,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766920976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370131146] [2022-12-13 11:37:40,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:37:40,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:40,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:40,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:37:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:40,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:40,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:40,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:41,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370131146] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:41,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:41,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 11:37:41,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435414308] [2022-12-13 11:37:41,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:41,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:37:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:37:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:37:41,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:41,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 103 transitions, 941 flow. Second operand has 19 states, 19 states have (on average 76.84210526315789) internal successors, (1460), 19 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:41,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:41,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:41,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:41,781 INFO L130 PetriNetUnfolder]: 261/527 cut-off events. [2022-12-13 11:37:41,781 INFO L131 PetriNetUnfolder]: For 4845/4845 co-relation queries the response was YES. [2022-12-13 11:37:41,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 527 events. 261/527 cut-off events. For 4845/4845 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2426 event pairs, 21 based on Foata normal form. 4/529 useless extension candidates. Maximal degree in co-relation 2968. Up to 234 conditions per place. [2022-12-13 11:37:41,785 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 110 selfloop transitions, 59 changer transitions 17/186 dead transitions. [2022-12-13 11:37:41,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 186 transitions, 1927 flow [2022-12-13 11:37:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 11:37:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 11:37:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1848 transitions. [2022-12-13 11:37:41,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4206692465285682 [2022-12-13 11:37:41,787 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1848 transitions. [2022-12-13 11:37:41,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1848 transitions. [2022-12-13 11:37:41,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:41,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1848 transitions. [2022-12-13 11:37:41,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 80.34782608695652) internal successors, (1848), 23 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:41,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:41,791 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:41,791 INFO L175 Difference]: Start difference. First operand has 138 places, 103 transitions, 941 flow. Second operand 23 states and 1848 transitions. [2022-12-13 11:37:41,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 186 transitions, 1927 flow [2022-12-13 11:37:41,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 186 transitions, 1660 flow, removed 47 selfloop flow, removed 25 redundant places. [2022-12-13 11:37:41,806 INFO L231 Difference]: Finished difference. Result has 140 places, 112 transitions, 1035 flow [2022-12-13 11:37:41,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1035, PETRI_PLACES=140, PETRI_TRANSITIONS=112} [2022-12-13 11:37:41,806 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2022-12-13 11:37:41,806 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 112 transitions, 1035 flow [2022-12-13 11:37:41,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.84210526315789) internal successors, (1460), 19 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:41,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:41,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:41,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:37:42,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 11:37:42,009 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash 283115498, now seen corresponding path program 8 times [2022-12-13 11:37:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:42,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736083523] [2022-12-13 11:37:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736083523] [2022-12-13 11:37:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736083523] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652671262] [2022-12-13 11:37:42,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:37:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:42,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:42,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:37:42,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:42,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:42,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:42,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:42,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:42,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652671262] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:42,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:42,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 11:37:42,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288140703] [2022-12-13 11:37:42,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:42,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:37:42,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:37:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:37:42,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:42,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 112 transitions, 1035 flow. Second operand has 19 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:42,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:42,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:42,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:43,359 INFO L130 PetriNetUnfolder]: 254/484 cut-off events. [2022-12-13 11:37:43,360 INFO L131 PetriNetUnfolder]: For 5122/5122 co-relation queries the response was YES. [2022-12-13 11:37:43,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 484 events. 254/484 cut-off events. For 5122/5122 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2045 event pairs, 21 based on Foata normal form. 5/487 useless extension candidates. Maximal degree in co-relation 2815. Up to 234 conditions per place. [2022-12-13 11:37:43,362 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 95 selfloop transitions, 52 changer transitions 31/178 dead transitions. [2022-12-13 11:37:43,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 178 transitions, 1870 flow [2022-12-13 11:37:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 11:37:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 11:37:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2151 transitions. [2022-12-13 11:37:43,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41710296684118675 [2022-12-13 11:37:43,368 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2151 transitions. [2022-12-13 11:37:43,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2151 transitions. [2022-12-13 11:37:43,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:43,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2151 transitions. [2022-12-13 11:37:43,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 79.66666666666667) internal successors, (2151), 27 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:43,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 191.0) internal successors, (5348), 28 states have internal predecessors, (5348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:43,373 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 191.0) internal successors, (5348), 28 states have internal predecessors, (5348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:43,373 INFO L175 Difference]: Start difference. First operand has 140 places, 112 transitions, 1035 flow. Second operand 27 states and 2151 transitions. [2022-12-13 11:37:43,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 178 transitions, 1870 flow [2022-12-13 11:37:43,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 178 transitions, 1742 flow, removed 29 selfloop flow, removed 17 redundant places. [2022-12-13 11:37:43,387 INFO L231 Difference]: Finished difference. Result has 153 places, 108 transitions, 1021 flow [2022-12-13 11:37:43,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1021, PETRI_PLACES=153, PETRI_TRANSITIONS=108} [2022-12-13 11:37:43,387 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2022-12-13 11:37:43,387 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 108 transitions, 1021 flow [2022-12-13 11:37:43,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:43,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:43,388 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:43,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:37:43,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 11:37:43,589 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:43,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1875076420, now seen corresponding path program 9 times [2022-12-13 11:37:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:43,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615956884] [2022-12-13 11:37:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:43,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615956884] [2022-12-13 11:37:43,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615956884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880670504] [2022-12-13 11:37:43,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:37:43,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:43,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:43,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:43,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:37:43,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 11:37:43,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:43,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:43,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:44,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880670504] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:44,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:44,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 11:37:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371306551] [2022-12-13 11:37:44,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:44,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:37:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:37:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:37:44,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:44,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 108 transitions, 1021 flow. Second operand has 19 states, 19 states have (on average 76.78947368421052) internal successors, (1459), 19 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:44,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:44,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:44,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:44,785 INFO L130 PetriNetUnfolder]: 238/458 cut-off events. [2022-12-13 11:37:44,785 INFO L131 PetriNetUnfolder]: For 4226/4226 co-relation queries the response was YES. [2022-12-13 11:37:44,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 458 events. 238/458 cut-off events. For 4226/4226 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1875 event pairs, 5 based on Foata normal form. 4/460 useless extension candidates. Maximal degree in co-relation 2629. Up to 236 conditions per place. [2022-12-13 11:37:44,791 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 120 selfloop transitions, 39 changer transitions 16/175 dead transitions. [2022-12-13 11:37:44,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 175 transitions, 1777 flow [2022-12-13 11:37:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 11:37:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 11:37:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1531 transitions. [2022-12-13 11:37:44,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4218793055938275 [2022-12-13 11:37:44,794 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1531 transitions. [2022-12-13 11:37:44,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1531 transitions. [2022-12-13 11:37:44,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:44,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1531 transitions. [2022-12-13 11:37:44,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 80.57894736842105) internal successors, (1531), 19 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:44,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 191.0) internal successors, (3820), 20 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:44,798 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 191.0) internal successors, (3820), 20 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:44,798 INFO L175 Difference]: Start difference. First operand has 153 places, 108 transitions, 1021 flow. Second operand 19 states and 1531 transitions. [2022-12-13 11:37:44,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 175 transitions, 1777 flow [2022-12-13 11:37:44,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 175 transitions, 1583 flow, removed 39 selfloop flow, removed 31 redundant places. [2022-12-13 11:37:44,811 INFO L231 Difference]: Finished difference. Result has 142 places, 114 transitions, 1075 flow [2022-12-13 11:37:44,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1075, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2022-12-13 11:37:44,811 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2022-12-13 11:37:44,812 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 1075 flow [2022-12-13 11:37:44,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.78947368421052) internal successors, (1459), 19 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:44,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:44,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:44,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 11:37:45,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:37:45,013 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:45,015 INFO L85 PathProgramCache]: Analyzing trace with hash -787344106, now seen corresponding path program 10 times [2022-12-13 11:37:45,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:45,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752677390] [2022-12-13 11:37:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752677390] [2022-12-13 11:37:45,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752677390] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:45,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090403664] [2022-12-13 11:37:45,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:37:45,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:45,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:45,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:45,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:37:45,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:37:45,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:45,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:37:45,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:45,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:45,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090403664] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:45,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:45,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 11:37:45,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338452765] [2022-12-13 11:37:45,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:37:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:37:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:37:45,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:45,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 1075 flow. Second operand has 19 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:45,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:45,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:45,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:46,184 INFO L130 PetriNetUnfolder]: 231/426 cut-off events. [2022-12-13 11:37:46,184 INFO L131 PetriNetUnfolder]: For 4136/4136 co-relation queries the response was YES. [2022-12-13 11:37:46,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 426 events. 231/426 cut-off events. For 4136/4136 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1656 event pairs, 9 based on Foata normal form. 5/431 useless extension candidates. Maximal degree in co-relation 2517. Up to 236 conditions per place. [2022-12-13 11:37:46,186 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 103 selfloop transitions, 34 changer transitions 30/167 dead transitions. [2022-12-13 11:37:46,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 167 transitions, 1755 flow [2022-12-13 11:37:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 11:37:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 11:37:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1833 transitions. [2022-12-13 11:37:46,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4172547234236285 [2022-12-13 11:37:46,188 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1833 transitions. [2022-12-13 11:37:46,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1833 transitions. [2022-12-13 11:37:46,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:46,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1833 transitions. [2022-12-13 11:37:46,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:46,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:46,193 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:46,193 INFO L175 Difference]: Start difference. First operand has 142 places, 114 transitions, 1075 flow. Second operand 23 states and 1833 transitions. [2022-12-13 11:37:46,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 167 transitions, 1755 flow [2022-12-13 11:37:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 167 transitions, 1638 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-12-13 11:37:46,206 INFO L231 Difference]: Finished difference. Result has 154 places, 109 transitions, 1021 flow [2022-12-13 11:37:46,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1021, PETRI_PLACES=154, PETRI_TRANSITIONS=109} [2022-12-13 11:37:46,206 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2022-12-13 11:37:46,206 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 109 transitions, 1021 flow [2022-12-13 11:37:46,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:46,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:46,206 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:46,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 11:37:46,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:46,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2035462600, now seen corresponding path program 11 times [2022-12-13 11:37:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849531228] [2022-12-13 11:37:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:46,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849531228] [2022-12-13 11:37:46,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849531228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:46,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290076018] [2022-12-13 11:37:46,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:37:46,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:46,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:46,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 11:37:46,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 11:37:46,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:46,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 11:37:46,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:46,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:46,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290076018] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:46,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:46,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-13 11:37:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62974528] [2022-12-13 11:37:46,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:37:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:37:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-12-13 11:37:47,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:47,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 109 transitions, 1021 flow. Second operand has 22 states, 22 states have (on average 76.72727272727273) internal successors, (1688), 22 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:47,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:47,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:47,607 INFO L130 PetriNetUnfolder]: 300/577 cut-off events. [2022-12-13 11:37:47,607 INFO L131 PetriNetUnfolder]: For 6529/6529 co-relation queries the response was YES. [2022-12-13 11:37:47,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 577 events. 300/577 cut-off events. For 6529/6529 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2540 event pairs, 5 based on Foata normal form. 6/583 useless extension candidates. Maximal degree in co-relation 3589. Up to 163 conditions per place. [2022-12-13 11:37:47,611 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 101 selfloop transitions, 61 changer transitions 58/220 dead transitions. [2022-12-13 11:37:47,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 220 transitions, 2438 flow [2022-12-13 11:37:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 11:37:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 11:37:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2154 transitions. [2022-12-13 11:37:47,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4176847004072135 [2022-12-13 11:37:47,613 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2154 transitions. [2022-12-13 11:37:47,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2154 transitions. [2022-12-13 11:37:47,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:47,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2154 transitions. [2022-12-13 11:37:47,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 79.77777777777777) internal successors, (2154), 27 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 191.0) internal successors, (5348), 28 states have internal predecessors, (5348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,618 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 191.0) internal successors, (5348), 28 states have internal predecessors, (5348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,618 INFO L175 Difference]: Start difference. First operand has 154 places, 109 transitions, 1021 flow. Second operand 27 states and 2154 transitions. [2022-12-13 11:37:47,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 220 transitions, 2438 flow [2022-12-13 11:37:47,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 220 transitions, 2265 flow, removed 39 selfloop flow, removed 28 redundant places. [2022-12-13 11:37:47,635 INFO L231 Difference]: Finished difference. Result has 158 places, 103 transitions, 1129 flow [2022-12-13 11:37:47,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1129, PETRI_PLACES=158, PETRI_TRANSITIONS=103} [2022-12-13 11:37:47,636 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2022-12-13 11:37:47,636 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 103 transitions, 1129 flow [2022-12-13 11:37:47,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 76.72727272727273) internal successors, (1688), 22 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:47,636 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:47,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 11:37:47,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 11:37:47,837 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:47,837 INFO L85 PathProgramCache]: Analyzing trace with hash 439494642, now seen corresponding path program 12 times [2022-12-13 11:37:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:47,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239026596] [2022-12-13 11:37:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:47,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239026596] [2022-12-13 11:37:47,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239026596] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:47,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459396116] [2022-12-13 11:37:47,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:37:47,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:47,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:47,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:47,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 11:37:48,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 11:37:48,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:48,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 11:37:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:48,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459396116] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:48,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:48,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-12-13 11:37:48,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385130941] [2022-12-13 11:37:48,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:48,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:37:48,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:37:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:37:48,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:48,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 103 transitions, 1129 flow. Second operand has 23 states, 23 states have (on average 76.73913043478261) internal successors, (1765), 23 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:48,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:48,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:48,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:49,244 INFO L130 PetriNetUnfolder]: 323/606 cut-off events. [2022-12-13 11:37:49,245 INFO L131 PetriNetUnfolder]: For 12050/12050 co-relation queries the response was YES. [2022-12-13 11:37:49,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4646 conditions, 606 events. 323/606 cut-off events. For 12050/12050 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2657 event pairs, 9 based on Foata normal form. 6/612 useless extension candidates. Maximal degree in co-relation 4593. Up to 211 conditions per place. [2022-12-13 11:37:49,248 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 111 selfloop transitions, 80 changer transitions 29/220 dead transitions. [2022-12-13 11:37:49,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 220 transitions, 2951 flow [2022-12-13 11:37:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 11:37:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-13 11:37:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2478 transitions. [2022-12-13 11:37:49,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41851038675899344 [2022-12-13 11:37:49,251 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2478 transitions. [2022-12-13 11:37:49,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2478 transitions. [2022-12-13 11:37:49,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:49,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2478 transitions. [2022-12-13 11:37:49,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 79.93548387096774) internal successors, (2478), 31 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:49,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 191.0) internal successors, (6112), 32 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:49,256 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 191.0) internal successors, (6112), 32 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:49,256 INFO L175 Difference]: Start difference. First operand has 158 places, 103 transitions, 1129 flow. Second operand 31 states and 2478 transitions. [2022-12-13 11:37:49,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 220 transitions, 2951 flow [2022-12-13 11:37:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 220 transitions, 2405 flow, removed 237 selfloop flow, removed 21 redundant places. [2022-12-13 11:37:49,277 INFO L231 Difference]: Finished difference. Result has 164 places, 125 transitions, 1548 flow [2022-12-13 11:37:49,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1548, PETRI_PLACES=164, PETRI_TRANSITIONS=125} [2022-12-13 11:37:49,278 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2022-12-13 11:37:49,278 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 125 transitions, 1548 flow [2022-12-13 11:37:49,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 76.73913043478261) internal successors, (1765), 23 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:49,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:49,278 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:49,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 11:37:49,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:49,480 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 470832852, now seen corresponding path program 13 times [2022-12-13 11:37:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:49,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786145127] [2022-12-13 11:37:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:49,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:49,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:49,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786145127] [2022-12-13 11:37:49,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786145127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:49,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437544714] [2022-12-13 11:37:49,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:37:49,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:49,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:49,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 11:37:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:49,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 11:37:49,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:49,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:49,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437544714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:49,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:49,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-12-13 11:37:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573559665] [2022-12-13 11:37:49,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:37:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:37:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:37:50,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:50,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 125 transitions, 1548 flow. Second operand has 23 states, 23 states have (on average 76.65217391304348) internal successors, (1763), 23 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:50,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:50,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:50,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:50,627 INFO L130 PetriNetUnfolder]: 278/518 cut-off events. [2022-12-13 11:37:50,627 INFO L131 PetriNetUnfolder]: For 9385/9385 co-relation queries the response was YES. [2022-12-13 11:37:50,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 518 events. 278/518 cut-off events. For 9385/9385 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2114 event pairs, 11 based on Foata normal form. 3/521 useless extension candidates. Maximal degree in co-relation 3804. Up to 169 conditions per place. [2022-12-13 11:37:50,631 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 102 selfloop transitions, 72 changer transitions 19/193 dead transitions. [2022-12-13 11:37:50,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 193 transitions, 2477 flow [2022-12-13 11:37:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:37:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 11:37:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1916 transitions. [2022-12-13 11:37:50,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4179755671902269 [2022-12-13 11:37:50,634 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1916 transitions. [2022-12-13 11:37:50,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1916 transitions. [2022-12-13 11:37:50,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:50,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1916 transitions. [2022-12-13 11:37:50,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:50,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 191.0) internal successors, (4775), 25 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:50,639 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 191.0) internal successors, (4775), 25 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:50,639 INFO L175 Difference]: Start difference. First operand has 164 places, 125 transitions, 1548 flow. Second operand 24 states and 1916 transitions. [2022-12-13 11:37:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 193 transitions, 2477 flow [2022-12-13 11:37:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 193 transitions, 2006 flow, removed 171 selfloop flow, removed 25 redundant places. [2022-12-13 11:37:50,665 INFO L231 Difference]: Finished difference. Result has 162 places, 123 transitions, 1273 flow [2022-12-13 11:37:50,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1273, PETRI_PLACES=162, PETRI_TRANSITIONS=123} [2022-12-13 11:37:50,665 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2022-12-13 11:37:50,665 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 123 transitions, 1273 flow [2022-12-13 11:37:50,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 76.65217391304348) internal successors, (1763), 23 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:50,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:50,666 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:50,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 11:37:50,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:50,867 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1385593552, now seen corresponding path program 14 times [2022-12-13 11:37:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:50,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425412447] [2022-12-13 11:37:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:50,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:51,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425412447] [2022-12-13 11:37:51,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425412447] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:51,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108948167] [2022-12-13 11:37:51,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:37:51,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:51,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:51,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 11:37:51,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:51,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:51,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:37:51,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:51,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:51,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108948167] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:51,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:51,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2022-12-13 11:37:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334547791] [2022-12-13 11:37:51,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:37:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:37:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-12-13 11:37:51,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:51,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 123 transitions, 1273 flow. Second operand has 22 states, 22 states have (on average 76.81818181818181) internal successors, (1690), 22 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:51,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:51,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:51,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:52,261 INFO L130 PetriNetUnfolder]: 313/593 cut-off events. [2022-12-13 11:37:52,261 INFO L131 PetriNetUnfolder]: For 9602/9602 co-relation queries the response was YES. [2022-12-13 11:37:52,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 593 events. 313/593 cut-off events. For 9602/9602 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2582 event pairs, 7 based on Foata normal form. 5/598 useless extension candidates. Maximal degree in co-relation 3963. Up to 276 conditions per place. [2022-12-13 11:37:52,264 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 123 selfloop transitions, 58 changer transitions 41/222 dead transitions. [2022-12-13 11:37:52,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 222 transitions, 2574 flow [2022-12-13 11:37:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:37:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 11:37:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2692 transitions. [2022-12-13 11:37:52,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4145364952263628 [2022-12-13 11:37:52,267 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2692 transitions. [2022-12-13 11:37:52,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2692 transitions. [2022-12-13 11:37:52,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:52,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2692 transitions. [2022-12-13 11:37:52,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 79.17647058823529) internal successors, (2692), 34 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:52,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 191.0) internal successors, (6685), 35 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:52,273 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 191.0) internal successors, (6685), 35 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:52,273 INFO L175 Difference]: Start difference. First operand has 162 places, 123 transitions, 1273 flow. Second operand 34 states and 2692 transitions. [2022-12-13 11:37:52,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 222 transitions, 2574 flow [2022-12-13 11:37:52,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 222 transitions, 2347 flow, removed 34 selfloop flow, removed 23 redundant places. [2022-12-13 11:37:52,294 INFO L231 Difference]: Finished difference. Result has 178 places, 124 transitions, 1323 flow [2022-12-13 11:37:52,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1323, PETRI_PLACES=178, PETRI_TRANSITIONS=124} [2022-12-13 11:37:52,294 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2022-12-13 11:37:52,294 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 124 transitions, 1323 flow [2022-12-13 11:37:52,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 76.81818181818181) internal successors, (1690), 22 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:52,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:52,295 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:52,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 11:37:52,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:52,496 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:52,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 152032490, now seen corresponding path program 15 times [2022-12-13 11:37:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:52,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984589331] [2022-12-13 11:37:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984589331] [2022-12-13 11:37:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984589331] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579350630] [2022-12-13 11:37:52,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:37:52,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:52,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:52,677 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:52,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 11:37:52,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 11:37:52,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:52,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:37:52,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:52,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:53,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579350630] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:53,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:53,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2022-12-13 11:37:53,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011340535] [2022-12-13 11:37:53,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:53,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:37:53,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:37:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:37:53,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:53,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 124 transitions, 1323 flow. Second operand has 23 states, 23 states have (on average 76.82608695652173) internal successors, (1767), 23 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:53,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:53,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:53,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:54,441 INFO L130 PetriNetUnfolder]: 454/835 cut-off events. [2022-12-13 11:37:54,441 INFO L131 PetriNetUnfolder]: For 23278/23278 co-relation queries the response was YES. [2022-12-13 11:37:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 835 events. 454/835 cut-off events. For 23278/23278 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3793 event pairs, 11 based on Foata normal form. 4/839 useless extension candidates. Maximal degree in co-relation 6945. Up to 284 conditions per place. [2022-12-13 11:37:54,448 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 153 selfloop transitions, 114 changer transitions 25/292 dead transitions. [2022-12-13 11:37:54,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 292 transitions, 4339 flow [2022-12-13 11:37:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 11:37:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-13 11:37:54,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3571 transitions. [2022-12-13 11:37:54,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154741128563118 [2022-12-13 11:37:54,454 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3571 transitions. [2022-12-13 11:37:54,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3571 transitions. [2022-12-13 11:37:54,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:54,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3571 transitions. [2022-12-13 11:37:54,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 79.35555555555555) internal successors, (3571), 45 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:54,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 191.0) internal successors, (8786), 46 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:54,465 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 191.0) internal successors, (8786), 46 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:54,465 INFO L175 Difference]: Start difference. First operand has 178 places, 124 transitions, 1323 flow. Second operand 45 states and 3571 transitions. [2022-12-13 11:37:54,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 292 transitions, 4339 flow [2022-12-13 11:37:54,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 292 transitions, 3439 flow, removed 382 selfloop flow, removed 29 redundant places. [2022-12-13 11:37:54,499 INFO L231 Difference]: Finished difference. Result has 195 places, 176 transitions, 2250 flow [2022-12-13 11:37:54,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2250, PETRI_PLACES=195, PETRI_TRANSITIONS=176} [2022-12-13 11:37:54,500 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2022-12-13 11:37:54,500 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 176 transitions, 2250 flow [2022-12-13 11:37:54,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 76.82608695652173) internal successors, (1767), 23 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:54,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:54,500 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:54,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 11:37:54,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 11:37:54,701 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash 183370700, now seen corresponding path program 16 times [2022-12-13 11:37:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:54,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845982461] [2022-12-13 11:37:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:54,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:54,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845982461] [2022-12-13 11:37:54,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845982461] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057818776] [2022-12-13 11:37:54,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:37:54,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:54,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:54,872 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:54,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 11:37:54,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:37:54,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:54,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 11:37:54,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:55,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:55,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057818776] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:55,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:55,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2022-12-13 11:37:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585227879] [2022-12-13 11:37:55,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:55,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:37:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:37:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:37:55,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:55,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 176 transitions, 2250 flow. Second operand has 25 states, 25 states have (on average 76.68) internal successors, (1917), 25 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:55,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:55,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:55,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:56,415 INFO L130 PetriNetUnfolder]: 430/796 cut-off events. [2022-12-13 11:37:56,415 INFO L131 PetriNetUnfolder]: For 22880/22880 co-relation queries the response was YES. [2022-12-13 11:37:56,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6437 conditions, 796 events. 430/796 cut-off events. For 22880/22880 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3570 event pairs, 15 based on Foata normal form. 3/799 useless extension candidates. Maximal degree in co-relation 6373. Up to 558 conditions per place. [2022-12-13 11:37:56,421 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 160 selfloop transitions, 56 changer transitions 23/239 dead transitions. [2022-12-13 11:37:56,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 239 transitions, 3471 flow [2022-12-13 11:37:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 11:37:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 11:37:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2052 transitions. [2022-12-13 11:37:56,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41320982682239227 [2022-12-13 11:37:56,431 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2052 transitions. [2022-12-13 11:37:56,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2052 transitions. [2022-12-13 11:37:56,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:56,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2052 transitions. [2022-12-13 11:37:56,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 78.92307692307692) internal successors, (2052), 26 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:56,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 191.0) internal successors, (5157), 27 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:56,435 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 191.0) internal successors, (5157), 27 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:56,435 INFO L175 Difference]: Start difference. First operand has 195 places, 176 transitions, 2250 flow. Second operand 26 states and 2052 transitions. [2022-12-13 11:37:56,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 239 transitions, 3471 flow [2022-12-13 11:37:56,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 239 transitions, 2832 flow, removed 262 selfloop flow, removed 27 redundant places. [2022-12-13 11:37:56,479 INFO L231 Difference]: Finished difference. Result has 195 places, 175 transitions, 1785 flow [2022-12-13 11:37:56,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1785, PETRI_PLACES=195, PETRI_TRANSITIONS=175} [2022-12-13 11:37:56,479 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2022-12-13 11:37:56,480 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 175 transitions, 1785 flow [2022-12-13 11:37:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 76.68) internal successors, (1917), 25 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:56,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:56,480 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:56,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 11:37:56,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:56,681 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash 375044092, now seen corresponding path program 17 times [2022-12-13 11:37:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:56,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377656548] [2022-12-13 11:37:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:56,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377656548] [2022-12-13 11:37:56,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377656548] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:56,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787283860] [2022-12-13 11:37:56,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:37:56,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:56,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:56,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:56,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 11:37:56,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 11:37:56,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:56,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:37:56,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:57,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:57,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787283860] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:57,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:57,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-12-13 11:37:57,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940222] [2022-12-13 11:37:57,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:57,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:37:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:37:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:37:57,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:57,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 175 transitions, 1785 flow. Second operand has 25 states, 25 states have (on average 76.6) internal successors, (1915), 25 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:57,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:57,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:57,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:58,333 INFO L130 PetriNetUnfolder]: 574/1078 cut-off events. [2022-12-13 11:37:58,333 INFO L131 PetriNetUnfolder]: For 33692/33692 co-relation queries the response was YES. [2022-12-13 11:37:58,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8409 conditions, 1078 events. 574/1078 cut-off events. For 33692/33692 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5457 event pairs, 17 based on Foata normal form. 3/1081 useless extension candidates. Maximal degree in co-relation 8345. Up to 591 conditions per place. [2022-12-13 11:37:58,340 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 216 selfloop transitions, 84 changer transitions 11/311 dead transitions. [2022-12-13 11:37:58,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 311 transitions, 3884 flow [2022-12-13 11:37:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 11:37:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-13 11:37:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2477 transitions. [2022-12-13 11:37:58,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4183414963688566 [2022-12-13 11:37:58,343 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2477 transitions. [2022-12-13 11:37:58,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2477 transitions. [2022-12-13 11:37:58,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:58,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2477 transitions. [2022-12-13 11:37:58,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 79.90322580645162) internal successors, (2477), 31 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:58,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 191.0) internal successors, (6112), 32 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:58,347 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 191.0) internal successors, (6112), 32 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:58,347 INFO L175 Difference]: Start difference. First operand has 195 places, 175 transitions, 1785 flow. Second operand 31 states and 2477 transitions. [2022-12-13 11:37:58,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 311 transitions, 3884 flow [2022-12-13 11:37:58,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 311 transitions, 3647 flow, removed 36 selfloop flow, removed 28 redundant places. [2022-12-13 11:37:58,396 INFO L231 Difference]: Finished difference. Result has 203 places, 226 transitions, 2650 flow [2022-12-13 11:37:58,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2650, PETRI_PLACES=203, PETRI_TRANSITIONS=226} [2022-12-13 11:37:58,396 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2022-12-13 11:37:58,396 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 226 transitions, 2650 flow [2022-12-13 11:37:58,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 76.6) internal successors, (1915), 25 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:58,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:58,397 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:58,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 11:37:58,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 11:37:58,598 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:37:58,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1609337550, now seen corresponding path program 18 times [2022-12-13 11:37:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:58,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212668628] [2022-12-13 11:37:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:58,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212668628] [2022-12-13 11:37:58,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212668628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:58,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668346023] [2022-12-13 11:37:58,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:37:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:58,763 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:58,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 11:37:58,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 11:37:58,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:58,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:37:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:58,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:59,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668346023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:59,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:59,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-12-13 11:37:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423090465] [2022-12-13 11:37:59,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:59,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:37:59,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:37:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:37:59,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:37:59,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 226 transitions, 2650 flow. Second operand has 25 states, 25 states have (on average 76.68) internal successors, (1917), 25 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:59,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:59,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:37:59,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:00,440 INFO L130 PetriNetUnfolder]: 671/1219 cut-off events. [2022-12-13 11:38:00,441 INFO L131 PetriNetUnfolder]: For 48777/48777 co-relation queries the response was YES. [2022-12-13 11:38:00,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10815 conditions, 1219 events. 671/1219 cut-off events. For 48777/48777 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6156 event pairs, 17 based on Foata normal form. 3/1222 useless extension candidates. Maximal degree in co-relation 10747. Up to 593 conditions per place. [2022-12-13 11:38:00,449 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 228 selfloop transitions, 134 changer transitions 14/376 dead transitions. [2022-12-13 11:38:00,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 376 transitions, 5631 flow [2022-12-13 11:38:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 11:38:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-13 11:38:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3119 transitions. [2022-12-13 11:38:00,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41871392133172236 [2022-12-13 11:38:00,452 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3119 transitions. [2022-12-13 11:38:00,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3119 transitions. [2022-12-13 11:38:00,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:00,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3119 transitions. [2022-12-13 11:38:00,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 79.97435897435898) internal successors, (3119), 39 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:00,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 191.0) internal successors, (7640), 40 states have internal predecessors, (7640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:00,460 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 191.0) internal successors, (7640), 40 states have internal predecessors, (7640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:00,460 INFO L175 Difference]: Start difference. First operand has 203 places, 226 transitions, 2650 flow. Second operand 39 states and 3119 transitions. [2022-12-13 11:38:00,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 376 transitions, 5631 flow [2022-12-13 11:38:00,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 376 transitions, 4673 flow, removed 460 selfloop flow, removed 11 redundant places. [2022-12-13 11:38:00,548 INFO L231 Difference]: Finished difference. Result has 239 places, 281 transitions, 3493 flow [2022-12-13 11:38:00,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3493, PETRI_PLACES=239, PETRI_TRANSITIONS=281} [2022-12-13 11:38:00,549 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 210 predicate places. [2022-12-13 11:38:00,549 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 281 transitions, 3493 flow [2022-12-13 11:38:00,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 76.68) internal successors, (1917), 25 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:00,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:00,549 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:00,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 11:38:00,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 11:38:00,750 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1794822360, now seen corresponding path program 19 times [2022-12-13 11:38:00,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:00,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075113953] [2022-12-13 11:38:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:00,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:00,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075113953] [2022-12-13 11:38:00,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075113953] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:00,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537828498] [2022-12-13 11:38:00,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:38:00,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:00,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:00,906 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:00,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 11:38:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:00,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:38:00,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:01,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:01,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537828498] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:01,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:01,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-12-13 11:38:01,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277806515] [2022-12-13 11:38:01,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:01,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 11:38:01,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:01,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 11:38:01,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:38:01,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:01,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 281 transitions, 3493 flow. Second operand has 24 states, 24 states have (on average 76.66666666666667) internal successors, (1840), 24 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:01,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:01,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:01,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:02,202 INFO L130 PetriNetUnfolder]: 708/1310 cut-off events. [2022-12-13 11:38:02,202 INFO L131 PetriNetUnfolder]: For 62520/62520 co-relation queries the response was YES. [2022-12-13 11:38:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11599 conditions, 1310 events. 708/1310 cut-off events. For 62520/62520 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6667 event pairs, 27 based on Foata normal form. 9/1319 useless extension candidates. Maximal degree in co-relation 11521. Up to 680 conditions per place. [2022-12-13 11:38:02,211 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 213 selfloop transitions, 78 changer transitions 99/390 dead transitions. [2022-12-13 11:38:02,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 390 transitions, 5628 flow [2022-12-13 11:38:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 11:38:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-13 11:38:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2616 transitions. [2022-12-13 11:38:02,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4150404569252737 [2022-12-13 11:38:02,214 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2616 transitions. [2022-12-13 11:38:02,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2616 transitions. [2022-12-13 11:38:02,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:02,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2616 transitions. [2022-12-13 11:38:02,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 79.27272727272727) internal successors, (2616), 33 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:02,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:02,221 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:02,221 INFO L175 Difference]: Start difference. First operand has 239 places, 281 transitions, 3493 flow. Second operand 33 states and 2616 transitions. [2022-12-13 11:38:02,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 390 transitions, 5628 flow [2022-12-13 11:38:02,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 390 transitions, 4652 flow, removed 438 selfloop flow, removed 13 redundant places. [2022-12-13 11:38:02,375 INFO L231 Difference]: Finished difference. Result has 269 places, 243 transitions, 2718 flow [2022-12-13 11:38:02,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2718, PETRI_PLACES=269, PETRI_TRANSITIONS=243} [2022-12-13 11:38:02,376 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2022-12-13 11:38:02,376 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 2718 flow [2022-12-13 11:38:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 76.66666666666667) internal successors, (1840), 24 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:02,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:02,376 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:02,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 11:38:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:02,578 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash -626457430, now seen corresponding path program 20 times [2022-12-13 11:38:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:02,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436955468] [2022-12-13 11:38:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:02,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436955468] [2022-12-13 11:38:02,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436955468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:02,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190543155] [2022-12-13 11:38:02,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:38:02,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:02,769 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:02,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 11:38:02,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:38:02,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:38:02,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:02,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:03,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190543155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:03,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:03,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2022-12-13 11:38:03,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853675357] [2022-12-13 11:38:03,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:03,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 11:38:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 11:38:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:38:03,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:03,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 243 transitions, 2718 flow. Second operand has 28 states, 28 states have (on average 76.57142857142857) internal successors, (2144), 28 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:03,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:03,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:03,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:05,590 INFO L130 PetriNetUnfolder]: 1239/2344 cut-off events. [2022-12-13 11:38:05,590 INFO L131 PetriNetUnfolder]: For 123696/123696 co-relation queries the response was YES. [2022-12-13 11:38:05,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22183 conditions, 2344 events. 1239/2344 cut-off events. For 123696/123696 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14436 event pairs, 22 based on Foata normal form. 8/2352 useless extension candidates. Maximal degree in co-relation 22094. Up to 700 conditions per place. [2022-12-13 11:38:05,609 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 302 selfloop transitions, 282 changer transitions 39/623 dead transitions. [2022-12-13 11:38:05,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 623 transitions, 9119 flow [2022-12-13 11:38:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 11:38:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-13 11:38:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4259 transitions. [2022-12-13 11:38:05,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42072508149757976 [2022-12-13 11:38:05,612 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4259 transitions. [2022-12-13 11:38:05,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4259 transitions. [2022-12-13 11:38:05,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:05,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4259 transitions. [2022-12-13 11:38:05,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 80.35849056603773) internal successors, (4259), 53 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:05,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 191.0) internal successors, (10314), 54 states have internal predecessors, (10314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:05,621 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 191.0) internal successors, (10314), 54 states have internal predecessors, (10314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:05,621 INFO L175 Difference]: Start difference. First operand has 269 places, 243 transitions, 2718 flow. Second operand 53 states and 4259 transitions. [2022-12-13 11:38:05,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 623 transitions, 9119 flow [2022-12-13 11:38:05,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 623 transitions, 8658 flow, removed 130 selfloop flow, removed 33 redundant places. [2022-12-13 11:38:05,878 INFO L231 Difference]: Finished difference. Result has 284 places, 444 transitions, 6969 flow [2022-12-13 11:38:05,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6969, PETRI_PLACES=284, PETRI_TRANSITIONS=444} [2022-12-13 11:38:05,879 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 255 predicate places. [2022-12-13 11:38:05,879 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 444 transitions, 6969 flow [2022-12-13 11:38:05,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 76.57142857142857) internal successors, (2144), 28 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:05,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:05,880 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:05,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 11:38:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 11:38:06,081 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash -264729440, now seen corresponding path program 21 times [2022-12-13 11:38:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:06,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120560538] [2022-12-13 11:38:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:06,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:06,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120560538] [2022-12-13 11:38:06,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120560538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:06,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664327443] [2022-12-13 11:38:06,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:38:06,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:06,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:06,332 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:06,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 11:38:06,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 11:38:06,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:06,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:38:06,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:06,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:06,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664327443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:06,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:06,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2022-12-13 11:38:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004390257] [2022-12-13 11:38:06,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 11:38:06,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 11:38:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:38:06,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:06,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 444 transitions, 6969 flow. Second operand has 28 states, 28 states have (on average 76.57142857142857) internal successors, (2144), 28 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:06,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:06,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:06,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:08,556 INFO L130 PetriNetUnfolder]: 1210/2288 cut-off events. [2022-12-13 11:38:08,556 INFO L131 PetriNetUnfolder]: For 132253/132253 co-relation queries the response was YES. [2022-12-13 11:38:08,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23103 conditions, 2288 events. 1210/2288 cut-off events. For 132253/132253 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13990 event pairs, 30 based on Foata normal form. 12/2296 useless extension candidates. Maximal degree in co-relation 23009. Up to 700 conditions per place. [2022-12-13 11:38:08,579 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 307 selfloop transitions, 266 changer transitions 39/612 dead transitions. [2022-12-13 11:38:08,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 612 transitions, 9740 flow [2022-12-13 11:38:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 11:38:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-13 11:38:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3688 transitions. [2022-12-13 11:38:08,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4197587070339176 [2022-12-13 11:38:08,584 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3688 transitions. [2022-12-13 11:38:08,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3688 transitions. [2022-12-13 11:38:08,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:08,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3688 transitions. [2022-12-13 11:38:08,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 80.17391304347827) internal successors, (3688), 46 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:08,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 191.0) internal successors, (8977), 47 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:08,594 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 191.0) internal successors, (8977), 47 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:08,594 INFO L175 Difference]: Start difference. First operand has 284 places, 444 transitions, 6969 flow. Second operand 46 states and 3688 transitions. [2022-12-13 11:38:08,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 612 transitions, 9740 flow [2022-12-13 11:38:09,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 612 transitions, 7529 flow, removed 1081 selfloop flow, removed 13 redundant places. [2022-12-13 11:38:09,061 INFO L231 Difference]: Finished difference. Result has 325 places, 468 transitions, 6431 flow [2022-12-13 11:38:09,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6431, PETRI_PLACES=325, PETRI_TRANSITIONS=468} [2022-12-13 11:38:09,062 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2022-12-13 11:38:09,062 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 468 transitions, 6431 flow [2022-12-13 11:38:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 76.57142857142857) internal successors, (2144), 28 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:09,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:09,065 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:09,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 11:38:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 11:38:09,266 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1443015280, now seen corresponding path program 22 times [2022-12-13 11:38:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231557090] [2022-12-13 11:38:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:09,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231557090] [2022-12-13 11:38:09,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231557090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:09,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830797085] [2022-12-13 11:38:09,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:38:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:09,420 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:09,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 11:38:09,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:38:09,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:09,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:38:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:09,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:09,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830797085] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:09,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:09,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2022-12-13 11:38:09,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215798609] [2022-12-13 11:38:09,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:09,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 11:38:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 11:38:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:38:10,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:10,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 468 transitions, 6431 flow. Second operand has 28 states, 28 states have (on average 76.64285714285714) internal successors, (2146), 28 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:10,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:10,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:10,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:11,847 INFO L130 PetriNetUnfolder]: 1345/2484 cut-off events. [2022-12-13 11:38:11,847 INFO L131 PetriNetUnfolder]: For 73538/73538 co-relation queries the response was YES. [2022-12-13 11:38:11,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20966 conditions, 2484 events. 1345/2484 cut-off events. For 73538/73538 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14976 event pairs, 34 based on Foata normal form. 11/2491 useless extension candidates. Maximal degree in co-relation 20864. Up to 922 conditions per place. [2022-12-13 11:38:11,864 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 285 selfloop transitions, 210 changer transitions 158/653 dead transitions. [2022-12-13 11:38:11,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 653 transitions, 10306 flow [2022-12-13 11:38:11,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 11:38:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-13 11:38:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3966 transitions. [2022-12-13 11:38:11,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41528795811518326 [2022-12-13 11:38:11,867 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3966 transitions. [2022-12-13 11:38:11,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3966 transitions. [2022-12-13 11:38:11,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:11,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3966 transitions. [2022-12-13 11:38:11,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 79.32) internal successors, (3966), 50 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:11,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 191.0) internal successors, (9741), 51 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:11,875 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 191.0) internal successors, (9741), 51 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:11,875 INFO L175 Difference]: Start difference. First operand has 325 places, 468 transitions, 6431 flow. Second operand 50 states and 3966 transitions. [2022-12-13 11:38:11,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 653 transitions, 10306 flow [2022-12-13 11:38:12,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 653 transitions, 9160 flow, removed 498 selfloop flow, removed 32 redundant places. [2022-12-13 11:38:12,227 INFO L231 Difference]: Finished difference. Result has 356 places, 424 transitions, 6093 flow [2022-12-13 11:38:12,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5854, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=6093, PETRI_PLACES=356, PETRI_TRANSITIONS=424} [2022-12-13 11:38:12,228 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 327 predicate places. [2022-12-13 11:38:12,228 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 424 transitions, 6093 flow [2022-12-13 11:38:12,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 76.64285714285714) internal successors, (2146), 28 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:12,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:12,228 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:12,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 11:38:12,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 11:38:12,430 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1367048064, now seen corresponding path program 23 times [2022-12-13 11:38:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:12,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847031440] [2022-12-13 11:38:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:12,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847031440] [2022-12-13 11:38:12,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847031440] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121450013] [2022-12-13 11:38:12,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:38:12,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:12,642 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:12,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 11:38:12,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 11:38:12,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:12,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 11:38:12,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:12,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:13,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121450013] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:13,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:13,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2022-12-13 11:38:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291517595] [2022-12-13 11:38:13,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:13,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 11:38:13,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 11:38:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2022-12-13 11:38:13,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:13,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 424 transitions, 6093 flow. Second operand has 30 states, 30 states have (on average 76.56666666666666) internal successors, (2297), 30 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:13,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:13,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:13,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:14,606 INFO L130 PetriNetUnfolder]: 1121/2146 cut-off events. [2022-12-13 11:38:14,606 INFO L131 PetriNetUnfolder]: For 55357/55357 co-relation queries the response was YES. [2022-12-13 11:38:14,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17664 conditions, 2146 events. 1121/2146 cut-off events. For 55357/55357 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12890 event pairs, 22 based on Foata normal form. 18/2160 useless extension candidates. Maximal degree in co-relation 17547. Up to 457 conditions per place. [2022-12-13 11:38:14,623 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 218 selfloop transitions, 255 changer transitions 115/588 dead transitions. [2022-12-13 11:38:14,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 588 transitions, 9224 flow [2022-12-13 11:38:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 11:38:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-13 11:38:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2938 transitions. [2022-12-13 11:38:14,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41573510683458326 [2022-12-13 11:38:14,625 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2938 transitions. [2022-12-13 11:38:14,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2938 transitions. [2022-12-13 11:38:14,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:14,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2938 transitions. [2022-12-13 11:38:14,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 79.4054054054054) internal successors, (2938), 37 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:14,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 191.0) internal successors, (7258), 38 states have internal predecessors, (7258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:14,631 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 191.0) internal successors, (7258), 38 states have internal predecessors, (7258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:14,631 INFO L175 Difference]: Start difference. First operand has 356 places, 424 transitions, 6093 flow. Second operand 37 states and 2938 transitions. [2022-12-13 11:38:14,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 588 transitions, 9224 flow [2022-12-13 11:38:14,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 588 transitions, 8644 flow, removed 211 selfloop flow, removed 39 redundant places. [2022-12-13 11:38:14,913 INFO L231 Difference]: Finished difference. Result has 348 places, 399 transitions, 6396 flow [2022-12-13 11:38:14,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5650, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6396, PETRI_PLACES=348, PETRI_TRANSITIONS=399} [2022-12-13 11:38:14,913 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 319 predicate places. [2022-12-13 11:38:14,913 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 399 transitions, 6396 flow [2022-12-13 11:38:14,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 76.56666666666666) internal successors, (2297), 30 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:14,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:14,914 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:14,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 11:38:15,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:15,115 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1088207640, now seen corresponding path program 24 times [2022-12-13 11:38:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:15,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867721268] [2022-12-13 11:38:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:15,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:15,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867721268] [2022-12-13 11:38:15,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867721268] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:15,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174934943] [2022-12-13 11:38:15,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:38:15,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:15,273 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:15,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 11:38:15,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 11:38:15,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:15,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 11:38:15,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:15,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:15,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174934943] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:15,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:15,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2022-12-13 11:38:15,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6990250] [2022-12-13 11:38:15,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:15,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 11:38:15,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:15,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 11:38:15,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-12-13 11:38:15,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:15,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 399 transitions, 6396 flow. Second operand has 30 states, 30 states have (on average 76.53333333333333) internal successors, (2296), 30 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:15,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:15,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:15,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:18,047 INFO L130 PetriNetUnfolder]: 1406/2571 cut-off events. [2022-12-13 11:38:18,047 INFO L131 PetriNetUnfolder]: For 109837/109837 co-relation queries the response was YES. [2022-12-13 11:38:18,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25370 conditions, 2571 events. 1406/2571 cut-off events. For 109837/109837 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15081 event pairs, 47 based on Foata normal form. 10/2577 useless extension candidates. Maximal degree in co-relation 25256. Up to 1238 conditions per place. [2022-12-13 11:38:18,066 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 369 selfloop transitions, 146 changer transitions 136/651 dead transitions. [2022-12-13 11:38:18,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 651 transitions, 11790 flow [2022-12-13 11:38:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 11:38:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-13 11:38:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3654 transitions. [2022-12-13 11:38:18,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41588891418165264 [2022-12-13 11:38:18,069 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3654 transitions. [2022-12-13 11:38:18,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3654 transitions. [2022-12-13 11:38:18,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:18,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3654 transitions. [2022-12-13 11:38:18,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 79.43478260869566) internal successors, (3654), 46 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:18,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 191.0) internal successors, (8977), 47 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:18,075 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 191.0) internal successors, (8977), 47 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:18,075 INFO L175 Difference]: Start difference. First operand has 348 places, 399 transitions, 6396 flow. Second operand 46 states and 3654 transitions. [2022-12-13 11:38:18,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 651 transitions, 11790 flow [2022-12-13 11:38:18,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 651 transitions, 10711 flow, removed 459 selfloop flow, removed 31 redundant places. [2022-12-13 11:38:18,518 INFO L231 Difference]: Finished difference. Result has 357 places, 452 transitions, 7206 flow [2022-12-13 11:38:18,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7206, PETRI_PLACES=357, PETRI_TRANSITIONS=452} [2022-12-13 11:38:18,518 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 328 predicate places. [2022-12-13 11:38:18,518 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 452 transitions, 7206 flow [2022-12-13 11:38:18,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 76.53333333333333) internal successors, (2296), 30 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:18,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:18,519 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:18,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 11:38:18,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:18,720 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:18,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1147461194, now seen corresponding path program 25 times [2022-12-13 11:38:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:18,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042454318] [2022-12-13 11:38:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:38:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042454318] [2022-12-13 11:38:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042454318] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948328966] [2022-12-13 11:38:19,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:38:19,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:19,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:19,012 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:19,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 11:38:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 11:38:19,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:19,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:38:19,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948328966] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:19,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:19,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 30 [2022-12-13 11:38:19,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718327934] [2022-12-13 11:38:19,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:19,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 11:38:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 11:38:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:38:19,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:19,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 452 transitions, 7206 flow. Second operand has 32 states, 32 states have (on average 76.53125) internal successors, (2449), 32 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:19,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:19,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:19,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:21,789 INFO L130 PetriNetUnfolder]: 1137/2205 cut-off events. [2022-12-13 11:38:21,790 INFO L131 PetriNetUnfolder]: For 44986/44986 co-relation queries the response was YES. [2022-12-13 11:38:21,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18755 conditions, 2205 events. 1137/2205 cut-off events. For 44986/44986 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13388 event pairs, 22 based on Foata normal form. 9/2210 useless extension candidates. Maximal degree in co-relation 18641. Up to 610 conditions per place. [2022-12-13 11:38:21,808 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 291 selfloop transitions, 284 changer transitions 35/610 dead transitions. [2022-12-13 11:38:21,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 610 transitions, 10156 flow [2022-12-13 11:38:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 11:38:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-13 11:38:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4033 transitions. [2022-12-13 11:38:21,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.414023200903398 [2022-12-13 11:38:21,811 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 4033 transitions. [2022-12-13 11:38:21,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 4033 transitions. [2022-12-13 11:38:21,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:21,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 4033 transitions. [2022-12-13 11:38:21,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 79.07843137254902) internal successors, (4033), 51 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:21,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 191.0) internal successors, (9932), 52 states have internal predecessors, (9932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:21,819 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 191.0) internal successors, (9932), 52 states have internal predecessors, (9932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:21,819 INFO L175 Difference]: Start difference. First operand has 357 places, 452 transitions, 7206 flow. Second operand 51 states and 4033 transitions. [2022-12-13 11:38:21,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 610 transitions, 10156 flow [2022-12-13 11:38:22,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 610 transitions, 9243 flow, removed 406 selfloop flow, removed 30 redundant places. [2022-12-13 11:38:22,122 INFO L231 Difference]: Finished difference. Result has 377 places, 490 transitions, 8065 flow [2022-12-13 11:38:22,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=6357, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8065, PETRI_PLACES=377, PETRI_TRANSITIONS=490} [2022-12-13 11:38:22,123 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 348 predicate places. [2022-12-13 11:38:22,123 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 490 transitions, 8065 flow [2022-12-13 11:38:22,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 76.53125) internal successors, (2449), 32 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:22,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:22,123 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:22,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-13 11:38:22,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 11:38:22,324 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1776609036, now seen corresponding path program 26 times [2022-12-13 11:38:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:22,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213454982] [2022-12-13 11:38:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:38:22,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:22,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213454982] [2022-12-13 11:38:22,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213454982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:22,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130424197] [2022-12-13 11:38:22,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:38:22,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:22,503 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:22,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 11:38:22,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:38:22,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:22,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 11:38:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:22,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:38:23,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130424197] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:23,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:23,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 30 [2022-12-13 11:38:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945281481] [2022-12-13 11:38:23,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:23,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 11:38:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:23,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 11:38:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:38:23,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:23,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 490 transitions, 8065 flow. Second operand has 32 states, 32 states have (on average 76.53125) internal successors, (2449), 32 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:23,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:23,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:24,831 INFO L130 PetriNetUnfolder]: 1099/2092 cut-off events. [2022-12-13 11:38:24,831 INFO L131 PetriNetUnfolder]: For 27555/27555 co-relation queries the response was YES. [2022-12-13 11:38:24,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16857 conditions, 2092 events. 1099/2092 cut-off events. For 27555/27555 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12313 event pairs, 24 based on Foata normal form. 16/2104 useless extension candidates. Maximal degree in co-relation 16744. Up to 610 conditions per place. [2022-12-13 11:38:24,849 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 283 selfloop transitions, 254 changer transitions 43/580 dead transitions. [2022-12-13 11:38:24,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 580 transitions, 9769 flow [2022-12-13 11:38:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 11:38:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-13 11:38:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3471 transitions. [2022-12-13 11:38:24,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4130176106615897 [2022-12-13 11:38:24,868 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3471 transitions. [2022-12-13 11:38:24,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3471 transitions. [2022-12-13 11:38:24,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:24,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3471 transitions. [2022-12-13 11:38:24,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 78.88636363636364) internal successors, (3471), 44 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:24,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 191.0) internal successors, (8595), 45 states have internal predecessors, (8595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:24,874 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 191.0) internal successors, (8595), 45 states have internal predecessors, (8595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:24,874 INFO L175 Difference]: Start difference. First operand has 377 places, 490 transitions, 8065 flow. Second operand 44 states and 3471 transitions. [2022-12-13 11:38:24,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 580 transitions, 9769 flow [2022-12-13 11:38:25,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 580 transitions, 9332 flow, removed 118 selfloop flow, removed 30 redundant places. [2022-12-13 11:38:25,098 INFO L231 Difference]: Finished difference. Result has 390 places, 476 transitions, 7893 flow [2022-12-13 11:38:25,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=7646, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7893, PETRI_PLACES=390, PETRI_TRANSITIONS=476} [2022-12-13 11:38:25,099 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 361 predicate places. [2022-12-13 11:38:25,099 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 476 transitions, 7893 flow [2022-12-13 11:38:25,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 76.53125) internal successors, (2449), 32 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:25,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:25,099 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:25,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 11:38:25,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:25,300 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:25,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash 863595332, now seen corresponding path program 27 times [2022-12-13 11:38:25,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:25,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587447413] [2022-12-13 11:38:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:25,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:38:25,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:25,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587447413] [2022-12-13 11:38:25,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587447413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:25,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143689402] [2022-12-13 11:38:25,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:38:25,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:25,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:25,463 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:25,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 11:38:25,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 11:38:25,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:25,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 11:38:25,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:25,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:25,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143689402] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:25,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:25,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 29 [2022-12-13 11:38:25,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853010344] [2022-12-13 11:38:25,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:25,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 11:38:25,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 11:38:25,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:38:26,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:26,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 476 transitions, 7893 flow. Second operand has 31 states, 31 states have (on average 76.64516129032258) internal successors, (2376), 31 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:26,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:26,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:27,790 INFO L130 PetriNetUnfolder]: 1174/2143 cut-off events. [2022-12-13 11:38:27,790 INFO L131 PetriNetUnfolder]: For 32704/32704 co-relation queries the response was YES. [2022-12-13 11:38:27,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18169 conditions, 2143 events. 1174/2143 cut-off events. For 32704/32704 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12096 event pairs, 22 based on Foata normal form. 10/2149 useless extension candidates. Maximal degree in co-relation 18055. Up to 628 conditions per place. [2022-12-13 11:38:27,804 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 149 selfloop transitions, 29 changer transitions 456/634 dead transitions. [2022-12-13 11:38:27,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 634 transitions, 11096 flow [2022-12-13 11:38:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-13 11:38:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-13 11:38:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3876 transitions. [2022-12-13 11:38:27,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4141468105566834 [2022-12-13 11:38:27,807 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3876 transitions. [2022-12-13 11:38:27,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3876 transitions. [2022-12-13 11:38:27,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:27,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3876 transitions. [2022-12-13 11:38:27,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 79.10204081632654) internal successors, (3876), 49 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:27,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 191.0) internal successors, (9550), 50 states have internal predecessors, (9550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:27,813 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 191.0) internal successors, (9550), 50 states have internal predecessors, (9550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:27,813 INFO L175 Difference]: Start difference. First operand has 390 places, 476 transitions, 7893 flow. Second operand 49 states and 3876 transitions. [2022-12-13 11:38:27,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 634 transitions, 11096 flow [2022-12-13 11:38:28,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 634 transitions, 10179 flow, removed 102 selfloop flow, removed 51 redundant places. [2022-12-13 11:38:28,042 INFO L231 Difference]: Finished difference. Result has 379 places, 172 transitions, 1903 flow [2022-12-13 11:38:28,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=7097, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1903, PETRI_PLACES=379, PETRI_TRANSITIONS=172} [2022-12-13 11:38:28,042 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 350 predicate places. [2022-12-13 11:38:28,042 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 172 transitions, 1903 flow [2022-12-13 11:38:28,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 76.64516129032258) internal successors, (2376), 31 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:28,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:28,043 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:28,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 11:38:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 11:38:28,244 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:28,245 INFO L85 PathProgramCache]: Analyzing trace with hash 395894270, now seen corresponding path program 28 times [2022-12-13 11:38:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:28,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686627916] [2022-12-13 11:38:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:28,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686627916] [2022-12-13 11:38:28,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686627916] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:28,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704196305] [2022-12-13 11:38:28,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:38:28,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:28,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:28,425 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:28,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 11:38:28,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:38:28,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:28,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 11:38:28,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:28,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:28,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704196305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:28,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:28,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 31 [2022-12-13 11:38:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089823175] [2022-12-13 11:38:28,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:28,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 11:38:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 11:38:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 11:38:29,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:29,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 172 transitions, 1903 flow. Second operand has 33 states, 33 states have (on average 76.48484848484848) internal successors, (2524), 33 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:29,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:29,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:29,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:31,093 INFO L130 PetriNetUnfolder]: 576/1220 cut-off events. [2022-12-13 11:38:31,093 INFO L131 PetriNetUnfolder]: For 10279/10279 co-relation queries the response was YES. [2022-12-13 11:38:31,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8139 conditions, 1220 events. 576/1220 cut-off events. For 10279/10279 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6882 event pairs, 0 based on Foata normal form. 9/1223 useless extension candidates. Maximal degree in co-relation 8037. Up to 305 conditions per place. [2022-12-13 11:38:31,101 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 102 selfloop transitions, 224 changer transitions 34/360 dead transitions. [2022-12-13 11:38:31,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 360 transitions, 4240 flow [2022-12-13 11:38:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 11:38:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-13 11:38:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3940 transitions. [2022-12-13 11:38:31,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41256544502617803 [2022-12-13 11:38:31,104 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3940 transitions. [2022-12-13 11:38:31,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3940 transitions. [2022-12-13 11:38:31,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:31,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3940 transitions. [2022-12-13 11:38:31,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 78.8) internal successors, (3940), 50 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:31,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 191.0) internal successors, (9741), 51 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:31,111 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 191.0) internal successors, (9741), 51 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:31,111 INFO L175 Difference]: Start difference. First operand has 379 places, 172 transitions, 1903 flow. Second operand 50 states and 3940 transitions. [2022-12-13 11:38:31,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 360 transitions, 4240 flow [2022-12-13 11:38:31,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 360 transitions, 3588 flow, removed 196 selfloop flow, removed 42 redundant places. [2022-12-13 11:38:31,149 INFO L231 Difference]: Finished difference. Result has 236 places, 254 transitions, 3134 flow [2022-12-13 11:38:31,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3134, PETRI_PLACES=236, PETRI_TRANSITIONS=254} [2022-12-13 11:38:31,149 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2022-12-13 11:38:31,149 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 254 transitions, 3134 flow [2022-12-13 11:38:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 76.48484848484848) internal successors, (2524), 33 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:31,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:31,149 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:31,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 11:38:31,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 11:38:31,350 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:31,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -716681556, now seen corresponding path program 29 times [2022-12-13 11:38:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:31,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736338409] [2022-12-13 11:38:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:31,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:31,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736338409] [2022-12-13 11:38:31,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736338409] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613157888] [2022-12-13 11:38:31,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:38:31,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:31,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:31,531 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:31,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 11:38:31,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 11:38:31,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:31,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 11:38:31,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:31,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:31,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613157888] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:31,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:31,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 31 [2022-12-13 11:38:31,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841400332] [2022-12-13 11:38:31,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:31,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 11:38:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 11:38:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 11:38:32,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:32,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 254 transitions, 3134 flow. Second operand has 33 states, 33 states have (on average 76.48484848484848) internal successors, (2524), 33 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:32,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:32,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:32,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:33,538 INFO L130 PetriNetUnfolder]: 560/1194 cut-off events. [2022-12-13 11:38:33,538 INFO L131 PetriNetUnfolder]: For 5303/5303 co-relation queries the response was YES. [2022-12-13 11:38:33,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 1194 events. 560/1194 cut-off events. For 5303/5303 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6718 event pairs, 0 based on Foata normal form. 9/1197 useless extension candidates. Maximal degree in co-relation 7500. Up to 281 conditions per place. [2022-12-13 11:38:33,545 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 86 selfloop transitions, 224 changer transitions 40/350 dead transitions. [2022-12-13 11:38:33,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 350 transitions, 4440 flow [2022-12-13 11:38:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 11:38:33,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 11:38:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2771 transitions. [2022-12-13 11:38:33,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41451009723261034 [2022-12-13 11:38:33,547 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2771 transitions. [2022-12-13 11:38:33,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2771 transitions. [2022-12-13 11:38:33,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:33,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2771 transitions. [2022-12-13 11:38:33,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 79.17142857142858) internal successors, (2771), 35 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:33,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 191.0) internal successors, (6876), 36 states have internal predecessors, (6876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:33,552 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 191.0) internal successors, (6876), 36 states have internal predecessors, (6876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:33,552 INFO L175 Difference]: Start difference. First operand has 236 places, 254 transitions, 3134 flow. Second operand 35 states and 2771 transitions. [2022-12-13 11:38:33,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 350 transitions, 4440 flow [2022-12-13 11:38:33,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 350 transitions, 4087 flow, removed 75 selfloop flow, removed 33 redundant places. [2022-12-13 11:38:33,597 INFO L231 Difference]: Finished difference. Result has 240 places, 271 transitions, 3576 flow [2022-12-13 11:38:33,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3576, PETRI_PLACES=240, PETRI_TRANSITIONS=271} [2022-12-13 11:38:33,598 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 211 predicate places. [2022-12-13 11:38:33,598 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 271 transitions, 3576 flow [2022-12-13 11:38:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 76.48484848484848) internal successors, (2524), 33 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:33,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:33,598 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:33,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 11:38:33,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 11:38:33,800 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -9259996, now seen corresponding path program 30 times [2022-12-13 11:38:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:33,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969835101] [2022-12-13 11:38:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969835101] [2022-12-13 11:38:34,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969835101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961899362] [2022-12-13 11:38:34,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:38:34,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:34,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:34,054 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:34,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 11:38:34,116 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-12-13 11:38:34,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:38:34,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 11:38:34,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:34,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:34,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961899362] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:34,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:34,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 36 [2022-12-13 11:38:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511830299] [2022-12-13 11:38:34,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:34,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 11:38:34,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 11:38:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 11:38:34,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:34,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 271 transitions, 3576 flow. Second operand has 38 states, 38 states have (on average 76.44736842105263) internal successors, (2905), 38 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:34,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:34,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:34,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:37,388 INFO L130 PetriNetUnfolder]: 1349/2904 cut-off events. [2022-12-13 11:38:37,388 INFO L131 PetriNetUnfolder]: For 17342/17342 co-relation queries the response was YES. [2022-12-13 11:38:37,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19187 conditions, 2904 events. 1349/2904 cut-off events. For 17342/17342 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20149 event pairs, 0 based on Foata normal form. 62/2964 useless extension candidates. Maximal degree in co-relation 19092. Up to 781 conditions per place. [2022-12-13 11:38:37,412 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 174 selfloop transitions, 336 changer transitions 407/917 dead transitions. [2022-12-13 11:38:37,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 917 transitions, 13662 flow [2022-12-13 11:38:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:38:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-13 11:38:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5386 transitions. [2022-12-13 11:38:37,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4146904835232522 [2022-12-13 11:38:37,415 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5386 transitions. [2022-12-13 11:38:37,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5386 transitions. [2022-12-13 11:38:37,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:37,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5386 transitions. [2022-12-13 11:38:37,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 79.20588235294117) internal successors, (5386), 68 states have internal predecessors, (5386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:37,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 191.0) internal successors, (13179), 69 states have internal predecessors, (13179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:37,424 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 191.0) internal successors, (13179), 69 states have internal predecessors, (13179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:37,424 INFO L175 Difference]: Start difference. First operand has 240 places, 271 transitions, 3576 flow. Second operand 68 states and 5386 transitions. [2022-12-13 11:38:37,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 917 transitions, 13662 flow [2022-12-13 11:38:37,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 917 transitions, 12296 flow, removed 595 selfloop flow, removed 26 redundant places. [2022-12-13 11:38:37,605 INFO L231 Difference]: Finished difference. Result has 319 places, 419 transitions, 6847 flow [2022-12-13 11:38:37,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=6847, PETRI_PLACES=319, PETRI_TRANSITIONS=419} [2022-12-13 11:38:37,605 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2022-12-13 11:38:37,605 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 419 transitions, 6847 flow [2022-12-13 11:38:37,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 76.44736842105263) internal successors, (2905), 38 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:37,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:37,606 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:37,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 11:38:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 11:38:37,807 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:38:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1465820280, now seen corresponding path program 31 times [2022-12-13 11:38:37,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:37,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593682744] [2022-12-13 11:38:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:38:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:38,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593682744] [2022-12-13 11:38:38,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593682744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:38,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110435654] [2022-12-13 11:38:38,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:38:38,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:38,153 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:38,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 11:38:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 11:38:38,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:38,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:38,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110435654] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:38,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:38,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 16] total 45 [2022-12-13 11:38:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959611760] [2022-12-13 11:38:38,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-13 11:38:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-13 11:38:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=1697, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 11:38:39,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2022-12-13 11:38:39,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 419 transitions, 6847 flow. Second operand has 47 states, 47 states have (on average 76.40425531914893) internal successors, (3591), 47 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:39,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:39,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2022-12-13 11:38:39,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:42,151 INFO L130 PetriNetUnfolder]: 2007/3997 cut-off events. [2022-12-13 11:38:42,151 INFO L131 PetriNetUnfolder]: For 39592/39592 co-relation queries the response was YES. [2022-12-13 11:38:42,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32434 conditions, 3997 events. 2007/3997 cut-off events. For 39592/39592 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 26423 event pairs, 0 based on Foata normal form. 25/4020 useless extension candidates. Maximal degree in co-relation 32300. Up to 1177 conditions per place. [2022-12-13 11:38:42,178 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 0 selfloop transitions, 0 changer transitions 1022/1022 dead transitions. [2022-12-13 11:38:42,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1022 transitions, 18126 flow [2022-12-13 11:38:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 11:38:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-12-13 11:38:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 5185 transitions. [2022-12-13 11:38:42,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4113120736157385 [2022-12-13 11:38:42,181 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 5185 transitions. [2022-12-13 11:38:42,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 5185 transitions. [2022-12-13 11:38:42,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:42,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 5185 transitions. [2022-12-13 11:38:42,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 78.56060606060606) internal successors, (5185), 66 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:42,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 191.0) internal successors, (12797), 67 states have internal predecessors, (12797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:42,190 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 191.0) internal successors, (12797), 67 states have internal predecessors, (12797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:42,190 INFO L175 Difference]: Start difference. First operand has 319 places, 419 transitions, 6847 flow. Second operand 66 states and 5185 transitions. [2022-12-13 11:38:42,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1022 transitions, 18126 flow [2022-12-13 11:38:42,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1022 transitions, 16617 flow, removed 676 selfloop flow, removed 32 redundant places. [2022-12-13 11:38:42,710 INFO L231 Difference]: Finished difference. Result has 315 places, 0 transitions, 0 flow [2022-12-13 11:38:42,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=6285, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=0, PETRI_PLACES=315, PETRI_TRANSITIONS=0} [2022-12-13 11:38:42,710 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 286 predicate places. [2022-12-13 11:38:42,710 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 0 transitions, 0 flow [2022-12-13 11:38:42,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 76.40425531914893) internal successors, (3591), 47 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:42,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-13 11:38:42,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 11:38:42,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 11:38:42,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 11:38:42,915 INFO L445 BasicCegarLoop]: Path program histogram: [31, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:42,923 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:38:42,923 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:38:42,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:38:42 BasicIcfg [2022-12-13 11:38:42,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:38:42,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:38:42,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:38:42,932 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:38:42,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:37:27" (3/4) ... [2022-12-13 11:38:42,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:38:42,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:38:42,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:38:42,942 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-12-13 11:38:42,942 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:38:42,942 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 11:38:42,942 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:38:42,962 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:38:42,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:38:42,963 INFO L158 Benchmark]: Toolchain (without parser) took 76471.97ms. Allocated memory was 148.9MB in the beginning and 943.7MB in the end (delta: 794.8MB). Free memory was 115.5MB in the beginning and 180.3MB in the end (delta: -64.7MB). Peak memory consumption was 733.2MB. Max. memory is 16.1GB. [2022-12-13 11:38:42,963 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:38:42,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.01ms. Allocated memory is still 148.9MB. Free memory was 115.5MB in the beginning and 104.1MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:38:42,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.99ms. Allocated memory is still 148.9MB. Free memory was 104.1MB in the beginning and 102.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:38:42,963 INFO L158 Benchmark]: Boogie Preprocessor took 16.65ms. Allocated memory is still 148.9MB. Free memory was 102.5MB in the beginning and 101.6MB in the end (delta: 928.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:38:42,964 INFO L158 Benchmark]: RCFGBuilder took 314.67ms. Allocated memory is still 148.9MB. Free memory was 101.6MB in the beginning and 86.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 11:38:42,964 INFO L158 Benchmark]: TraceAbstraction took 75907.83ms. Allocated memory was 148.9MB in the beginning and 943.7MB in the end (delta: 794.8MB). Free memory was 85.3MB in the beginning and 183.7MB in the end (delta: -98.5MB). Peak memory consumption was 697.6MB. Max. memory is 16.1GB. [2022-12-13 11:38:42,964 INFO L158 Benchmark]: Witness Printer took 30.55ms. Allocated memory is still 943.7MB. Free memory was 183.7MB in the beginning and 180.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:38:42,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.01ms. Allocated memory is still 148.9MB. Free memory was 115.5MB in the beginning and 104.1MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.99ms. Allocated memory is still 148.9MB. Free memory was 104.1MB in the beginning and 102.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.65ms. Allocated memory is still 148.9MB. Free memory was 102.5MB in the beginning and 101.6MB in the end (delta: 928.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 314.67ms. Allocated memory is still 148.9MB. Free memory was 101.6MB in the beginning and 86.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 75907.83ms. Allocated memory was 148.9MB in the beginning and 943.7MB in the end (delta: 794.8MB). Free memory was 85.3MB in the beginning and 183.7MB in the end (delta: -98.5MB). Peak memory consumption was 697.6MB. Max. memory is 16.1GB. * Witness Printer took 30.55ms. Allocated memory is still 943.7MB. Free memory was 183.7MB in the beginning and 180.3MB in the end (delta: 3.5MB). 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: 2.4s, 92 PlacesBefore, 29 PlacesAfterwards, 91 TransitionsBefore, 24 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 57 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 93 TotalNumberOfCompositions, 633 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 628, independent: 627, independent conditional: 0, independent unconditional: 627, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 278, independent: 277, independent conditional: 0, independent unconditional: 277, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 628, independent: 350, independent conditional: 0, independent unconditional: 350, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 278, unknown conditional: 0, unknown unconditional: 278] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: 78]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 64]: 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, 110 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: 75.8s, OverallIterations: 38, TraceHistogramMax: 10, PathProgramHistogramMax: 31, EmptinessCheckTime: 0.0s, AutomataDifference: 47.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8884 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8483 mSDsluCounter, 3397 SdHoareTripleChecker+Invalid, 14.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3232 mSDsCounter, 1899 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40920 IncrementalHoareTripleChecker+Invalid, 42819 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1899 mSolverCounterUnsat, 165 mSDtfsCounter, 40920 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2207 GetRequests, 564 SyntacticMatches, 39 SemanticMatches, 1604 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28812 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8065occurred in iteration=32, InterpolantAutomatonStates: 1146, 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 1138 NumberOfCodeBlocks, 1138 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 1590 ConstructedInterpolants, 0 QuantifiedInterpolants, 17499 SizeOfPredicates, 193 NumberOfNonLiveVariables, 4514 ConjunctsInSsa, 843 ConjunctsInUnsatCore, 102 InterpolantComputations, 6 PerfectInterpolantSequences, 64/912 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 11:38:42,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8937250-a587-4332-a2fe-40e675f0c40e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE