./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.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_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/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_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/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_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/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 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --- 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 11:41:37,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:41:37,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:41:37,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:41:37,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:41:37,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:41:37,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:41:37,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:41:37,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:41:37,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:41:37,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:41:37,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:41:37,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:41:37,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:41:37,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:41:37,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:41:37,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:41:37,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:41:37,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:41:37,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:41:37,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:41:37,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:41:37,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:41:37,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:41:37,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:41:37,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:41:37,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:41:37,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:41:37,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:41:37,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:41:37,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:41:37,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:41:37,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:41:37,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:41:37,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:41:37,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:41:37,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:41:37,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:41:37,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:41:37,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:41:37,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:41:37,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:41:37,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:41:37,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:41:37,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:41:37,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:41:37,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:41:37,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:41:37,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:41:37,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:41:37,259 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:41:37,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:41:37,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:41:37,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:41:37,261 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:41:37,261 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_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a [2022-12-13 11:41:37,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:41:37,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:41:37,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:41:37,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:41:37,438 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:41:37,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-12-13 11:41:40,087 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:41:40,261 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:41:40,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-12-13 11:41:40,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/data/92bcdbe1e/2371a15b6ece44e38619c36af7e973d9/FLAG17650d593 [2022-12-13 11:41:40,283 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/data/92bcdbe1e/2371a15b6ece44e38619c36af7e973d9 [2022-12-13 11:41:40,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:41:40,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:41:40,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:41:40,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:41:40,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:41:40,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4132d448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40, skipping insertion in model container [2022-12-13 11:41:40,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:41:40,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:41:40,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,428 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,431 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,433 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,434 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,435 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,436 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,442 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_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-12-13 11:41:40,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:41:40,453 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:41:40,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:41:40,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:41:40,472 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_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-12-13 11:41:40,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:41:40,483 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:41:40,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40 WrapperNode [2022-12-13 11:41:40,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:41:40,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:41:40,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:41:40,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:41:40,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,509 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-12-13 11:41:40,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:41:40,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:41:40,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:41:40,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:41:40,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:41:40,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:41:40,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:41:40,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:41:40,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (1/1) ... [2022-12-13 11:41:40,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:41:40,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:41:40,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:41:40,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:41:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:41:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:41:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:41:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:41:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:41:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:41:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:41:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:41:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:41:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:41:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:41:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:41:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:41:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:41:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:41:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:41:40,606 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 11:41:40,691 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:41:40,692 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:41:40,892 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:41:40,944 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:41:40,944 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:41:40,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:41:40 BoogieIcfgContainer [2022-12-13 11:41:40,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:41:40,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:41:40,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:41:40,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:41:40,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:41:40" (1/3) ... [2022-12-13 11:41:40,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59962db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:41:40, skipping insertion in model container [2022-12-13 11:41:40,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:40" (2/3) ... [2022-12-13 11:41:40,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59962db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:41:40, skipping insertion in model container [2022-12-13 11:41:40,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:41:40" (3/3) ... [2022-12-13 11:41:40,952 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-12-13 11:41:40,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:41:40,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 11:41:40,967 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:41:41,019 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:41:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2022-12-13 11:41:41,088 INFO L130 PetriNetUnfolder]: 7/122 cut-off events. [2022-12-13 11:41:41,089 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:41:41,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 7/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-13 11:41:41,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 125 transitions, 274 flow [2022-12-13 11:41:41,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 117 transitions, 252 flow [2022-12-13 11:41:41,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:41:41,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 252 flow [2022-12-13 11:41:41,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 252 flow [2022-12-13 11:41:41,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 252 flow [2022-12-13 11:41:41,151 INFO L130 PetriNetUnfolder]: 7/117 cut-off events. [2022-12-13 11:41:41,151 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:41:41,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 7/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-13 11:41:41,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 1598 [2022-12-13 11:41:43,962 INFO L134 LiptonReduction]: Checked pairs total: 2699 [2022-12-13 11:41:43,962 INFO L136 LiptonReduction]: Total number of compositions: 114 [2022-12-13 11:41:43,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:41:43,978 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;@208df3bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:41:43,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 11:41:43,980 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:41:43,980 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:43,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:43,980 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 11:41:43,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 537, now seen corresponding path program 1 times [2022-12-13 11:41:43,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:43,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963502263] [2022-12-13 11:41:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:43,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:44,059 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 11:41:44,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:44,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963502263] [2022-12-13 11:41:44,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963502263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:44,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:44,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 11:41:44,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494046511] [2022-12-13 11:41:44,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:41:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:41:44,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:41:44,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 239 [2022-12-13 11:41:44,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:44,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 239 [2022-12-13 11:41:44,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:44,179 INFO L130 PetriNetUnfolder]: 207/366 cut-off events. [2022-12-13 11:41:44,179 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 11:41:44,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 366 events. 207/366 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1747 event pairs, 203 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 612. Up to 359 conditions per place. [2022-12-13 11:41:44,184 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-12-13 11:41:44,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 138 flow [2022-12-13 11:41:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:41:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:41:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 253 transitions. [2022-12-13 11:41:44,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5292887029288703 [2022-12-13 11:41:44,194 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 253 transitions. [2022-12-13 11:41:44,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 253 transitions. [2022-12-13 11:41:44,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:44,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 253 transitions. [2022-12-13 11:41:44,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,203 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,204 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 253 transitions. [2022-12-13 11:41:44,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 138 flow [2022-12-13 11:41:44,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 11:41:44,208 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 70 flow [2022-12-13 11:41:44,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2022-12-13 11:41:44,212 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-12-13 11:41:44,213 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 70 flow [2022-12-13 11:41:44,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:44,213 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:41:44,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:41:44,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash 527544, now seen corresponding path program 1 times [2022-12-13 11:41:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:44,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141317180] [2022-12-13 11:41:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:44,401 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 11:41:44,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:44,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141317180] [2022-12-13 11:41:44,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141317180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:44,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:44,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:41:44,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279484422] [2022-12-13 11:41:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:44,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:44,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 239 [2022-12-13 11:41:44,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:44,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 239 [2022-12-13 11:41:44,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:44,508 INFO L130 PetriNetUnfolder]: 198/348 cut-off events. [2022-12-13 11:41:44,508 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:44,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 348 events. 198/348 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1627 event pairs, 194 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 701. Up to 340 conditions per place. [2022-12-13 11:41:44,510 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-12-13 11:41:44,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 118 flow [2022-12-13 11:41:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:41:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-12-13 11:41:44,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4825662482566248 [2022-12-13 11:41:44,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-12-13 11:41:44,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-12-13 11:41:44,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:44,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-12-13 11:41:44,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,515 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 70 flow. Second operand 3 states and 346 transitions. [2022-12-13 11:41:44,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 118 flow [2022-12-13 11:41:44,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:41:44,516 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2022-12-13 11:41:44,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 11:41:44,517 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-12-13 11:41:44,517 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2022-12-13 11:41:44,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:44,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:41:44,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:41:44,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash 527542, now seen corresponding path program 1 times [2022-12-13 11:41:44,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:44,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45682742] [2022-12-13 11:41:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:44,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:44,604 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 11:41:44,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:44,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45682742] [2022-12-13 11:41:44,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45682742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:44,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:44,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:41:44,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130773901] [2022-12-13 11:41:44,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:44,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:44,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:44,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:44,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 239 [2022-12-13 11:41:44,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:44,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 239 [2022-12-13 11:41:44,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:44,698 INFO L130 PetriNetUnfolder]: 189/330 cut-off events. [2022-12-13 11:41:44,698 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:44,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 330 events. 189/330 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1521 event pairs, 185 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 666. Up to 322 conditions per place. [2022-12-13 11:41:44,701 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 11:41:44,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 112 flow [2022-12-13 11:41:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:41:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2022-12-13 11:41:44,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45885634588563456 [2022-12-13 11:41:44,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2022-12-13 11:41:44,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2022-12-13 11:41:44,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:44,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2022-12-13 11:41:44,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,706 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 329 transitions. [2022-12-13 11:41:44,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 112 flow [2022-12-13 11:41:44,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:44,707 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2022-12-13 11:41:44,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2022-12-13 11:41:44,707 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2022-12-13 11:41:44,707 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2022-12-13 11:41:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:44,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:41:44,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:41:44,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash 506981402, now seen corresponding path program 1 times [2022-12-13 11:41:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:44,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893930990] [2022-12-13 11:41:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:44,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:44,766 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 11:41:44,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:44,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893930990] [2022-12-13 11:41:44,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893930990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:44,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:44,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:41:44,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640315758] [2022-12-13 11:41:44,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:44,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:44,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:44,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 239 [2022-12-13 11:41:44,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:44,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 239 [2022-12-13 11:41:44,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:44,851 INFO L130 PetriNetUnfolder]: 176/306 cut-off events. [2022-12-13 11:41:44,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:44,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 306 events. 176/306 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1388 event pairs, 172 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 619. Up to 298 conditions per place. [2022-12-13 11:41:44,852 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 21 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-12-13 11:41:44,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 105 flow [2022-12-13 11:41:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:41:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2022-12-13 11:41:44,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4769874476987448 [2022-12-13 11:41:44,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2022-12-13 11:41:44,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2022-12-13 11:41:44,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:44,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2022-12-13 11:41:44,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,859 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 342 transitions. [2022-12-13 11:41:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 105 flow [2022-12-13 11:41:44,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:44,860 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2022-12-13 11:41:44,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2022-12-13 11:41:44,861 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2022-12-13 11:41:44,861 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2022-12-13 11:41:44,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:44,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:41:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:41:44,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash 506981401, now seen corresponding path program 1 times [2022-12-13 11:41:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:44,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275671872] [2022-12-13 11:41:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:44,904 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 11:41:44,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:44,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275671872] [2022-12-13 11:41:44,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275671872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:44,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:44,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:41:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740576756] [2022-12-13 11:41:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:44,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:44,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 239 [2022-12-13 11:41:44,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:44,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 239 [2022-12-13 11:41:44,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:44,995 INFO L130 PetriNetUnfolder]: 163/282 cut-off events. [2022-12-13 11:41:44,996 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:44,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 282 events. 163/282 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1233 event pairs, 159 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 572. Up to 274 conditions per place. [2022-12-13 11:41:44,998 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 19 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 11:41:44,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 98 flow [2022-12-13 11:41:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:41:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2022-12-13 11:41:45,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45327754532775455 [2022-12-13 11:41:45,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2022-12-13 11:41:45,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2022-12-13 11:41:45,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:45,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2022-12-13 11:41:45,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,002 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 325 transitions. [2022-12-13 11:41:45,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 98 flow [2022-12-13 11:41:45,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:45,003 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 59 flow [2022-12-13 11:41:45,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 11:41:45,004 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-12-13 11:41:45,004 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 59 flow [2022-12-13 11:41:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:45,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:41:45,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1877836317, now seen corresponding path program 1 times [2022-12-13 11:41:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:45,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330332746] [2022-12-13 11:41:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:45,092 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 11:41:45,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330332746] [2022-12-13 11:41:45,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330332746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:45,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:45,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774599152] [2022-12-13 11:41:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:45,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:41:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:45,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:41:45,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:41:45,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 239 [2022-12-13 11:41:45,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:45,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 239 [2022-12-13 11:41:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:45,200 INFO L130 PetriNetUnfolder]: 130/231 cut-off events. [2022-12-13 11:41:45,200 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:45,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 231 events. 130/231 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 946 event pairs, 126 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 471. Up to 223 conditions per place. [2022-12-13 11:41:45,201 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 18 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2022-12-13 11:41:45,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 95 flow [2022-12-13 11:41:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:41:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-12-13 11:41:45,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41701534170153415 [2022-12-13 11:41:45,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-12-13 11:41:45,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-12-13 11:41:45,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:45,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-12-13 11:41:45,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,205 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 59 flow. Second operand 3 states and 299 transitions. [2022-12-13 11:41:45,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 95 flow [2022-12-13 11:41:45,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:45,205 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 58 flow [2022-12-13 11:41:45,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-12-13 11:41:45,206 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-12-13 11:41:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 58 flow [2022-12-13 11:41:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:45,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:45,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:41:45,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1877836316, now seen corresponding path program 1 times [2022-12-13 11:41:45,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:45,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983171534] [2022-12-13 11:41:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:45,237 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 11:41:45,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983171534] [2022-12-13 11:41:45,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983171534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:45,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:45,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:41:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305536234] [2022-12-13 11:41:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:45,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:45,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 239 [2022-12-13 11:41:45,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:45,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 239 [2022-12-13 11:41:45,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:45,320 INFO L130 PetriNetUnfolder]: 97/180 cut-off events. [2022-12-13 11:41:45,320 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 180 events. 97/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 702 event pairs, 93 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 370. Up to 172 conditions per place. [2022-12-13 11:41:45,322 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 17 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-12-13 11:41:45,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 92 flow [2022-12-13 11:41:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:41:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2022-12-13 11:41:45,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45327754532775455 [2022-12-13 11:41:45,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2022-12-13 11:41:45,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2022-12-13 11:41:45,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:45,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2022-12-13 11:41:45,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,325 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 58 flow. Second operand 3 states and 325 transitions. [2022-12-13 11:41:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 92 flow [2022-12-13 11:41:45,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:45,325 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 57 flow [2022-12-13 11:41:45,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-12-13 11:41:45,326 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2022-12-13 11:41:45,326 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 57 flow [2022-12-13 11:41:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:45,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:45,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:41:45,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash -190954476, now seen corresponding path program 1 times [2022-12-13 11:41:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:45,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546540677] [2022-12-13 11:41:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:45,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:45,452 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 11:41:45,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:45,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546540677] [2022-12-13 11:41:45,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546540677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:45,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:45,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:45,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408822032] [2022-12-13 11:41:45,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:45,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:41:45,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:45,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:41:45,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:41:45,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 239 [2022-12-13 11:41:45,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:45,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 239 [2022-12-13 11:41:45,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:45,558 INFO L130 PetriNetUnfolder]: 109/187 cut-off events. [2022-12-13 11:41:45,558 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:41:45,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 187 events. 109/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 704 event pairs, 6 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 391. Up to 85 conditions per place. [2022-12-13 11:41:45,560 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2022-12-13 11:41:45,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2022-12-13 11:41:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:41:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:41:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-12-13 11:41:45,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47594142259414224 [2022-12-13 11:41:45,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-12-13 11:41:45,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-12-13 11:41:45,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:45,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-12-13 11:41:45,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,566 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,566 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 57 flow. Second operand 4 states and 455 transitions. [2022-12-13 11:41:45,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2022-12-13 11:41:45,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:41:45,567 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 74 flow [2022-12-13 11:41:45,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2022-12-13 11:41:45,568 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2022-12-13 11:41:45,568 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 74 flow [2022-12-13 11:41:45,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:45,569 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:45,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:41:45,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:45,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash 808898708, now seen corresponding path program 2 times [2022-12-13 11:41:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:45,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320002563] [2022-12-13 11:41:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:45,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:45,700 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 11:41:45,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:45,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320002563] [2022-12-13 11:41:45,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320002563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:45,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:45,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:45,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114645211] [2022-12-13 11:41:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:45,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:41:45,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:41:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:41:45,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 239 [2022-12-13 11:41:45,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:45,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 239 [2022-12-13 11:41:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:45,799 INFO L130 PetriNetUnfolder]: 98/172 cut-off events. [2022-12-13 11:41:45,799 INFO L131 PetriNetUnfolder]: For 19/32 co-relation queries the response was YES. [2022-12-13 11:41:45,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 172 events. 98/172 cut-off events. For 19/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 480 event pairs, 9 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 386. Up to 103 conditions per place. [2022-12-13 11:41:45,799 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2022-12-13 11:41:45,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 165 flow [2022-12-13 11:41:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:41:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:41:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-12-13 11:41:45,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47175732217573224 [2022-12-13 11:41:45,801 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-12-13 11:41:45,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-12-13 11:41:45,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:45,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-12-13 11:41:45,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,805 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 74 flow. Second operand 4 states and 451 transitions. [2022-12-13 11:41:45,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 165 flow [2022-12-13 11:41:45,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:45,806 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2022-12-13 11:41:45,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-12-13 11:41:45,807 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2022-12-13 11:41:45,807 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2022-12-13 11:41:45,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:45,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:45,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:41:45,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1781572278, now seen corresponding path program 3 times [2022-12-13 11:41:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:45,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256661620] [2022-12-13 11:41:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:45,929 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 11:41:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256661620] [2022-12-13 11:41:45,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256661620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:45,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:45,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:45,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781700414] [2022-12-13 11:41:45,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:45,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:41:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:41:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:41:45,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 239 [2022-12-13 11:41:45,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:45,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:45,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 239 [2022-12-13 11:41:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:46,045 INFO L130 PetriNetUnfolder]: 122/214 cut-off events. [2022-12-13 11:41:46,045 INFO L131 PetriNetUnfolder]: For 81/90 co-relation queries the response was YES. [2022-12-13 11:41:46,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 214 events. 122/214 cut-off events. For 81/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 655 event pairs, 13 based on Foata normal form. 17/230 useless extension candidates. Maximal degree in co-relation 526. Up to 71 conditions per place. [2022-12-13 11:41:46,046 INFO L137 encePairwiseOnDemand]: 233/239 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2022-12-13 11:41:46,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 210 flow [2022-12-13 11:41:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:41:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:41:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2022-12-13 11:41:46,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4661087866108787 [2022-12-13 11:41:46,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2022-12-13 11:41:46,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2022-12-13 11:41:46,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:46,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2022-12-13 11:41:46,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,052 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 5 states and 557 transitions. [2022-12-13 11:41:46,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 210 flow [2022-12-13 11:41:46,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:41:46,054 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 132 flow [2022-12-13 11:41:46,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2022-12-13 11:41:46,055 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2022-12-13 11:41:46,055 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 132 flow [2022-12-13 11:41:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:46,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:46,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:41:46,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1422511922, now seen corresponding path program 4 times [2022-12-13 11:41:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:46,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599994575] [2022-12-13 11:41:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:46,192 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 11:41:46,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599994575] [2022-12-13 11:41:46,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599994575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:46,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:46,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:41:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343608896] [2022-12-13 11:41:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:41:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:41:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:41:46,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 239 [2022-12-13 11:41:46,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:46,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 239 [2022-12-13 11:41:46,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:46,355 INFO L130 PetriNetUnfolder]: 213/366 cut-off events. [2022-12-13 11:41:46,355 INFO L131 PetriNetUnfolder]: For 374/385 co-relation queries the response was YES. [2022-12-13 11:41:46,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 366 events. 213/366 cut-off events. For 374/385 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1329 event pairs, 13 based on Foata normal form. 25/389 useless extension candidates. Maximal degree in co-relation 1012. Up to 202 conditions per place. [2022-12-13 11:41:46,357 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 30 selfloop transitions, 3 changer transitions 24/60 dead transitions. [2022-12-13 11:41:46,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 368 flow [2022-12-13 11:41:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:41:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:41:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-12-13 11:41:46,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46144650328750747 [2022-12-13 11:41:46,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-12-13 11:41:46,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-12-13 11:41:46,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:46,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-12-13 11:41:46,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,365 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 132 flow. Second operand 7 states and 772 transitions. [2022-12-13 11:41:46,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 368 flow [2022-12-13 11:41:46,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:41:46,368 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 161 flow [2022-12-13 11:41:46,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2022-12-13 11:41:46,369 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2022-12-13 11:41:46,369 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 161 flow [2022-12-13 11:41:46,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:46,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:46,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:41:46,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1893019086, now seen corresponding path program 1 times [2022-12-13 11:41:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:46,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786800769] [2022-12-13 11:41:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:46,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786800769] [2022-12-13 11:41:46,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786800769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:46,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:46,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:41:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138238480] [2022-12-13 11:41:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:46,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:41:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:41:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:41:46,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 239 [2022-12-13 11:41:46,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:46,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 239 [2022-12-13 11:41:46,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:46,861 INFO L130 PetriNetUnfolder]: 326/529 cut-off events. [2022-12-13 11:41:46,861 INFO L131 PetriNetUnfolder]: For 1045/1045 co-relation queries the response was YES. [2022-12-13 11:41:46,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 529 events. 326/529 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1847 event pairs, 14 based on Foata normal form. 16/545 useless extension candidates. Maximal degree in co-relation 1987. Up to 169 conditions per place. [2022-12-13 11:41:46,866 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 67 selfloop transitions, 36 changer transitions 0/103 dead transitions. [2022-12-13 11:41:46,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 758 flow [2022-12-13 11:41:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:41:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 11:41:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 989 transitions. [2022-12-13 11:41:46,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4597861459786146 [2022-12-13 11:41:46,869 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 989 transitions. [2022-12-13 11:41:46,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 989 transitions. [2022-12-13 11:41:46,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:46,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 989 transitions. [2022-12-13 11:41:46,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.88888888888889) internal successors, (989), 9 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,872 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,873 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 161 flow. Second operand 9 states and 989 transitions. [2022-12-13 11:41:46,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 758 flow [2022-12-13 11:41:46,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 103 transitions, 720 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-12-13 11:41:46,878 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 523 flow [2022-12-13 11:41:46,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=523, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2022-12-13 11:41:46,878 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2022-12-13 11:41:46,878 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 523 flow [2022-12-13 11:41:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:46,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:46,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:41:46,879 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 155395046, now seen corresponding path program 2 times [2022-12-13 11:41:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:46,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902501900] [2022-12-13 11:41:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902501900] [2022-12-13 11:41:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902501900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:46,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:41:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438527639] [2022-12-13 11:41:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:41:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:41:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:41:47,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 239 [2022-12-13 11:41:47,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 523 flow. Second operand has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:47,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 239 [2022-12-13 11:41:47,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:47,361 INFO L130 PetriNetUnfolder]: 474/831 cut-off events. [2022-12-13 11:41:47,361 INFO L131 PetriNetUnfolder]: For 4579/4579 co-relation queries the response was YES. [2022-12-13 11:41:47,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4249 conditions, 831 events. 474/831 cut-off events. For 4579/4579 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3443 event pairs, 39 based on Foata normal form. 20/851 useless extension candidates. Maximal degree in co-relation 4229. Up to 257 conditions per place. [2022-12-13 11:41:47,367 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 101 selfloop transitions, 63 changer transitions 0/164 dead transitions. [2022-12-13 11:41:47,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 164 transitions, 1624 flow [2022-12-13 11:41:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:41:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 11:41:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1003 transitions. [2022-12-13 11:41:47,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4662947466294747 [2022-12-13 11:41:47,369 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1003 transitions. [2022-12-13 11:41:47,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1003 transitions. [2022-12-13 11:41:47,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:47,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1003 transitions. [2022-12-13 11:41:47,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.44444444444444) internal successors, (1003), 9 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,373 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,373 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 523 flow. Second operand 9 states and 1003 transitions. [2022-12-13 11:41:47,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 164 transitions, 1624 flow [2022-12-13 11:41:47,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 164 transitions, 1592 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-12-13 11:41:47,385 INFO L231 Difference]: Finished difference. Result has 78 places, 103 transitions, 1255 flow [2022-12-13 11:41:47,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1255, PETRI_PLACES=78, PETRI_TRANSITIONS=103} [2022-12-13 11:41:47,386 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2022-12-13 11:41:47,386 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 103 transitions, 1255 flow [2022-12-13 11:41:47,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:47,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:41:47,386 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 313434252, now seen corresponding path program 3 times [2022-12-13 11:41:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609491522] [2022-12-13 11:41:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:47,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:47,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:47,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609491522] [2022-12-13 11:41:47,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609491522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:47,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:47,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:41:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376693567] [2022-12-13 11:41:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:47,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:41:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:41:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:41:47,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 239 [2022-12-13 11:41:47,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 103 transitions, 1255 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:47,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 239 [2022-12-13 11:41:47,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:47,822 INFO L130 PetriNetUnfolder]: 553/944 cut-off events. [2022-12-13 11:41:47,822 INFO L131 PetriNetUnfolder]: For 9149/9149 co-relation queries the response was YES. [2022-12-13 11:41:47,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 944 events. 553/944 cut-off events. For 9149/9149 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3926 event pairs, 4 based on Foata normal form. 36/980 useless extension candidates. Maximal degree in co-relation 5915. Up to 458 conditions per place. [2022-12-13 11:41:47,828 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 100 selfloop transitions, 42 changer transitions 40/182 dead transitions. [2022-12-13 11:41:47,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 182 transitions, 2467 flow [2022-12-13 11:41:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:41:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 11:41:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 988 transitions. [2022-12-13 11:41:47,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4593212459321246 [2022-12-13 11:41:47,830 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 988 transitions. [2022-12-13 11:41:47,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 988 transitions. [2022-12-13 11:41:47,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:47,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 988 transitions. [2022-12-13 11:41:47,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.77777777777777) internal successors, (988), 9 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,834 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,834 INFO L175 Difference]: Start difference. First operand has 78 places, 103 transitions, 1255 flow. Second operand 9 states and 988 transitions. [2022-12-13 11:41:47,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 182 transitions, 2467 flow [2022-12-13 11:41:47,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 182 transitions, 2343 flow, removed 62 selfloop flow, removed 0 redundant places. [2022-12-13 11:41:47,859 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 1435 flow [2022-12-13 11:41:47,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1435, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2022-12-13 11:41:47,859 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2022-12-13 11:41:47,859 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 1435 flow [2022-12-13 11:41:47,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:47,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:47,860 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:41:47,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -131153556, now seen corresponding path program 4 times [2022-12-13 11:41:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:47,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420281464] [2022-12-13 11:41:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:48,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:48,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420281464] [2022-12-13 11:41:48,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420281464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:48,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:48,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:41:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014280964] [2022-12-13 11:41:48,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:48,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:41:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:41:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:41:48,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 239 [2022-12-13 11:41:48,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 1435 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:48,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:48,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 239 [2022-12-13 11:41:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:48,330 INFO L130 PetriNetUnfolder]: 550/1030 cut-off events. [2022-12-13 11:41:48,330 INFO L131 PetriNetUnfolder]: For 12786/12822 co-relation queries the response was YES. [2022-12-13 11:41:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 1030 events. 550/1030 cut-off events. For 12786/12822 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5094 event pairs, 18 based on Foata normal form. 36/1060 useless extension candidates. Maximal degree in co-relation 6833. Up to 537 conditions per place. [2022-12-13 11:41:48,337 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 91 selfloop transitions, 15 changer transitions 81/208 dead transitions. [2022-12-13 11:41:48,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 208 transitions, 3053 flow [2022-12-13 11:41:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:41:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 11:41:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 883 transitions. [2022-12-13 11:41:48,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4618200836820084 [2022-12-13 11:41:48,339 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 883 transitions. [2022-12-13 11:41:48,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 883 transitions. [2022-12-13 11:41:48,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:48,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 883 transitions. [2022-12-13 11:41:48,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:48,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 239.0) internal successors, (2151), 9 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 11:41:48,342 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 239.0) internal successors, (2151), 9 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 11:41:48,343 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 1435 flow. Second operand 8 states and 883 transitions. [2022-12-13 11:41:48,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 208 transitions, 3053 flow [2022-12-13 11:41:48,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 208 transitions, 2928 flow, removed 34 selfloop flow, removed 5 redundant places. [2022-12-13 11:41:48,378 INFO L231 Difference]: Finished difference. Result has 99 places, 115 transitions, 1615 flow [2022-12-13 11:41:48,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1615, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2022-12-13 11:41:48,378 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2022-12-13 11:41:48,378 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 1615 flow [2022-12-13 11:41:48,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:48,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:48,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:48,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:41:48,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2017245032, now seen corresponding path program 1 times [2022-12-13 11:41:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:48,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373112086] [2022-12-13 11:41:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:48,521 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 11:41:48,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373112086] [2022-12-13 11:41:48,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373112086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:41:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679172606] [2022-12-13 11:41:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:48,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:41:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:41:48,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:41:48,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:41:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:48,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:41:48,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:41:48,727 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 11:41:48,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:41:48,886 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 11:41:48,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679172606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:41:48,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:41:48,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 11:41:48,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775535625] [2022-12-13 11:41:48,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:41:48,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:41:48,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:48,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:41:48,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:41:48,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 239 [2022-12-13 11:41:48,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 1615 flow. Second operand has 12 states, 12 states have (on average 103.58333333333333) internal successors, (1243), 12 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:48,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:48,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 239 [2022-12-13 11:41:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:49,556 INFO L130 PetriNetUnfolder]: 776/1414 cut-off events. [2022-12-13 11:41:49,556 INFO L131 PetriNetUnfolder]: For 18687/18708 co-relation queries the response was YES. [2022-12-13 11:41:49,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 1414 events. 776/1414 cut-off events. For 18687/18708 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7262 event pairs, 8 based on Foata normal form. 63/1471 useless extension candidates. Maximal degree in co-relation 10015. Up to 429 conditions per place. [2022-12-13 11:41:49,566 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 95 selfloop transitions, 58 changer transitions 129/303 dead transitions. [2022-12-13 11:41:49,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 303 transitions, 4565 flow [2022-12-13 11:41:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 11:41:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 11:41:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1818 transitions. [2022-12-13 11:41:49,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44745262121585033 [2022-12-13 11:41:49,569 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1818 transitions. [2022-12-13 11:41:49,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1818 transitions. [2022-12-13 11:41:49,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:49,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1818 transitions. [2022-12-13 11:41:49,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 106.94117647058823) internal successors, (1818), 17 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:49,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 239.0) internal successors, (4302), 18 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:49,577 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 239.0) internal successors, (4302), 18 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:49,577 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 1615 flow. Second operand 17 states and 1818 transitions. [2022-12-13 11:41:49,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 303 transitions, 4565 flow [2022-12-13 11:41:49,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 303 transitions, 4321 flow, removed 69 selfloop flow, removed 5 redundant places. [2022-12-13 11:41:49,639 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 2004 flow [2022-12-13 11:41:49,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2004, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2022-12-13 11:41:49,639 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2022-12-13 11:41:49,639 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 2004 flow [2022-12-13 11:41:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 103.58333333333333) internal successors, (1243), 12 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:49,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:49,640 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:49,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:41:49,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:41:49,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash -722417768, now seen corresponding path program 5 times [2022-12-13 11:41:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:49,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925043736] [2022-12-13 11:41:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925043736] [2022-12-13 11:41:50,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925043736] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:41:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957208032] [2022-12-13 11:41:50,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:41:50,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:41:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:41:50,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:41:50,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:41:50,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 11:41:50,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:41:50,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:41:50,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:41:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:50,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:41:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:50,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957208032] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:41:50,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:41:50,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-12-13 11:41:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844483993] [2022-12-13 11:41:50,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:41:50,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 11:41:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 11:41:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:41:50,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 239 [2022-12-13 11:41:50,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 2004 flow. Second operand has 15 states, 15 states have (on average 102.86666666666666) internal successors, (1543), 15 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:50,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:50,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 239 [2022-12-13 11:41:50,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:51,891 INFO L130 PetriNetUnfolder]: 1524/2782 cut-off events. [2022-12-13 11:41:51,891 INFO L131 PetriNetUnfolder]: For 56275/56312 co-relation queries the response was YES. [2022-12-13 11:41:51,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21690 conditions, 2782 events. 1524/2782 cut-off events. For 56275/56312 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16408 event pairs, 8 based on Foata normal form. 95/2861 useless extension candidates. Maximal degree in co-relation 21649. Up to 967 conditions per place. [2022-12-13 11:41:51,910 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 160 selfloop transitions, 152 changer transitions 232/565 dead transitions. [2022-12-13 11:41:51,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 565 transitions, 9230 flow [2022-12-13 11:41:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 11:41:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-13 11:41:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3744 transitions. [2022-12-13 11:41:51,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4475791990436342 [2022-12-13 11:41:51,918 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3744 transitions. [2022-12-13 11:41:51,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3744 transitions. [2022-12-13 11:41:51,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:51,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3744 transitions. [2022-12-13 11:41:51,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 106.97142857142858) internal successors, (3744), 35 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:51,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:51,949 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:51,949 INFO L175 Difference]: Start difference. First operand has 113 places, 133 transitions, 2004 flow. Second operand 35 states and 3744 transitions. [2022-12-13 11:41:51,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 565 transitions, 9230 flow [2022-12-13 11:41:52,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 565 transitions, 8380 flow, removed 280 selfloop flow, removed 10 redundant places. [2022-12-13 11:41:52,124 INFO L231 Difference]: Finished difference. Result has 146 places, 237 transitions, 4130 flow [2022-12-13 11:41:52,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4130, PETRI_PLACES=146, PETRI_TRANSITIONS=237} [2022-12-13 11:41:52,124 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2022-12-13 11:41:52,124 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 237 transitions, 4130 flow [2022-12-13 11:41:52,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 102.86666666666666) internal successors, (1543), 15 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:52,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:52,125 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:52,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:41:52,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 11:41:52,327 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1373304018, now seen corresponding path program 1 times [2022-12-13 11:41:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870328387] [2022-12-13 11:41:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:52,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870328387] [2022-12-13 11:41:52,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870328387] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:41:52,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290383025] [2022-12-13 11:41:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:41:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:41:52,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:41:52,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:41:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:52,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:41:52,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:41:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:52,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:41:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:53,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290383025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:41:53,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:41:53,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 11:41:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991735245] [2022-12-13 11:41:53,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:41:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:41:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:53,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:41:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:41:53,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:41:53,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 237 transitions, 4130 flow. Second operand has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:53,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:53,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:41:53,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:55,009 INFO L130 PetriNetUnfolder]: 1802/3122 cut-off events. [2022-12-13 11:41:55,009 INFO L131 PetriNetUnfolder]: For 67501/67511 co-relation queries the response was YES. [2022-12-13 11:41:55,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25457 conditions, 3122 events. 1802/3122 cut-off events. For 67501/67511 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17795 event pairs, 12 based on Foata normal form. 142/3262 useless extension candidates. Maximal degree in co-relation 25404. Up to 1155 conditions per place. [2022-12-13 11:41:55,044 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 193 selfloop transitions, 203 changer transitions 160/578 dead transitions. [2022-12-13 11:41:55,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 578 transitions, 10320 flow [2022-12-13 11:41:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 11:41:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-13 11:41:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3758 transitions. [2022-12-13 11:41:55,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43677359367735935 [2022-12-13 11:41:55,048 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3758 transitions. [2022-12-13 11:41:55,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3758 transitions. [2022-12-13 11:41:55,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:55,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3758 transitions. [2022-12-13 11:41:55,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 104.38888888888889) internal successors, (3758), 36 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:55,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 239.0) internal successors, (8843), 37 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:55,058 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 239.0) internal successors, (8843), 37 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:55,058 INFO L175 Difference]: Start difference. First operand has 146 places, 237 transitions, 4130 flow. Second operand 36 states and 3758 transitions. [2022-12-13 11:41:55,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 578 transitions, 10320 flow [2022-12-13 11:41:55,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 578 transitions, 8348 flow, removed 964 selfloop flow, removed 19 redundant places. [2022-12-13 11:41:55,389 INFO L231 Difference]: Finished difference. Result has 159 places, 285 transitions, 4512 flow [2022-12-13 11:41:55,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4512, PETRI_PLACES=159, PETRI_TRANSITIONS=285} [2022-12-13 11:41:55,390 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2022-12-13 11:41:55,390 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 285 transitions, 4512 flow [2022-12-13 11:41:55,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:55,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:55,393 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:55,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:41:55,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 11:41:55,594 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:41:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 499669004, now seen corresponding path program 2 times [2022-12-13 11:41:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:55,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374573060] [2022-12-13 11:41:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:55,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374573060] [2022-12-13 11:41:55,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374573060] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:41:55,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319411652] [2022-12-13 11:41:55,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:41:55,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:41:55,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:41:55,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:41:55,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:41:55,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:41:55,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:41:55,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:41:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:41:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:56,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:41:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:56,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319411652] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:41:56,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:41:56,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 11:41:56,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989153624] [2022-12-13 11:41:56,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:41:56,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:41:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:56,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:41:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:41:56,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:41:56,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 285 transitions, 4512 flow. Second operand has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:56,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:56,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:41:56,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:41:59,257 INFO L130 PetriNetUnfolder]: 3239/5731 cut-off events. [2022-12-13 11:41:59,257 INFO L131 PetriNetUnfolder]: For 83774/83877 co-relation queries the response was YES. [2022-12-13 11:41:59,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43400 conditions, 5731 events. 3239/5731 cut-off events. For 83774/83877 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 37511 event pairs, 30 based on Foata normal form. 229/5924 useless extension candidates. Maximal degree in co-relation 43349. Up to 2079 conditions per place. [2022-12-13 11:41:59,290 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 259 selfloop transitions, 244 changer transitions 488/1027 dead transitions. [2022-12-13 11:41:59,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 1027 transitions, 18129 flow [2022-12-13 11:41:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:41:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-13 11:41:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5047 transitions. [2022-12-13 11:41:59,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4399407252440725 [2022-12-13 11:41:59,295 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5047 transitions. [2022-12-13 11:41:59,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5047 transitions. [2022-12-13 11:41:59,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:41:59,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5047 transitions. [2022-12-13 11:41:59,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 105.14583333333333) internal successors, (5047), 48 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:59,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:59,307 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:59,307 INFO L175 Difference]: Start difference. First operand has 159 places, 285 transitions, 4512 flow. Second operand 48 states and 5047 transitions. [2022-12-13 11:41:59,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 1027 transitions, 18129 flow [2022-12-13 11:42:00,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 1027 transitions, 16027 flow, removed 907 selfloop flow, removed 18 redundant places. [2022-12-13 11:42:00,016 INFO L231 Difference]: Finished difference. Result has 198 places, 411 transitions, 7045 flow [2022-12-13 11:42:00,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7045, PETRI_PLACES=198, PETRI_TRANSITIONS=411} [2022-12-13 11:42:00,016 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2022-12-13 11:42:00,016 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 411 transitions, 7045 flow [2022-12-13 11:42:00,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:00,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:42:00,017 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:00,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:42:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:00,218 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:42:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1513935366, now seen corresponding path program 3 times [2022-12-13 11:42:00,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:00,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543171278] [2022-12-13 11:42:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:00,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543171278] [2022-12-13 11:42:00,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543171278] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:00,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931838279] [2022-12-13 11:42:00,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:42:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:00,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:00,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:42:00,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 11:42:00,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:42:00,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:42:00,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:00,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:42:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:01,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931838279] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:42:01,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:42:01,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-13 11:42:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647241564] [2022-12-13 11:42:01,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:42:01,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 11:42:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 11:42:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:42:01,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 239 [2022-12-13 11:42:01,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 411 transitions, 7045 flow. Second operand has 21 states, 21 states have (on average 98.14285714285714) internal successors, (2061), 21 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:01,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:42:01,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 239 [2022-12-13 11:42:01,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:42:05,631 INFO L130 PetriNetUnfolder]: 4326/7143 cut-off events. [2022-12-13 11:42:05,631 INFO L131 PetriNetUnfolder]: For 152318/152318 co-relation queries the response was YES. [2022-12-13 11:42:05,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56504 conditions, 7143 events. 4326/7143 cut-off events. For 152318/152318 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 43295 event pairs, 91 based on Foata normal form. 216/7359 useless extension candidates. Maximal degree in co-relation 56438. Up to 2499 conditions per place. [2022-12-13 11:42:05,678 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 494 selfloop transitions, 369 changer transitions 321/1184 dead transitions. [2022-12-13 11:42:05,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1184 transitions, 22647 flow [2022-12-13 11:42:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 11:42:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-13 11:42:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 7612 transitions. [2022-12-13 11:42:05,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42465829846582986 [2022-12-13 11:42:05,685 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 7612 transitions. [2022-12-13 11:42:05,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 7612 transitions. [2022-12-13 11:42:05,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:42:05,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 7612 transitions. [2022-12-13 11:42:05,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 101.49333333333334) internal successors, (7612), 75 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:05,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 239.0) internal successors, (18164), 76 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:05,705 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 239.0) internal successors, (18164), 76 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:05,705 INFO L175 Difference]: Start difference. First operand has 198 places, 411 transitions, 7045 flow. Second operand 75 states and 7612 transitions. [2022-12-13 11:42:05,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1184 transitions, 22647 flow [2022-12-13 11:42:06,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1184 transitions, 19461 flow, removed 1547 selfloop flow, removed 26 redundant places. [2022-12-13 11:42:06,902 INFO L231 Difference]: Finished difference. Result has 271 places, 603 transitions, 10734 flow [2022-12-13 11:42:06,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=6095, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=10734, PETRI_PLACES=271, PETRI_TRANSITIONS=603} [2022-12-13 11:42:06,902 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2022-12-13 11:42:06,902 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 603 transitions, 10734 flow [2022-12-13 11:42:06,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.14285714285714) internal successors, (2061), 21 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:06,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:42:06,903 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:06,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:42:07,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-13 11:42:07,105 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:42:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 71321370, now seen corresponding path program 4 times [2022-12-13 11:42:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766321708] [2022-12-13 11:42:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:07,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766321708] [2022-12-13 11:42:07,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766321708] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:07,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958156649] [2022-12-13 11:42:07,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:42:07,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:07,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:07,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:07,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:42:07,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:42:07,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:42:07,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:42:07,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:07,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:42:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:08,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958156649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:42:08,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:42:08,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-13 11:42:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219956810] [2022-12-13 11:42:08,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:42:08,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 11:42:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 11:42:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:42:08,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:42:08,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 603 transitions, 10734 flow. Second operand has 21 states, 21 states have (on average 100.76190476190476) internal successors, (2116), 21 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:08,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:42:08,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:42:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:42:12,383 INFO L130 PetriNetUnfolder]: 4790/8382 cut-off events. [2022-12-13 11:42:12,384 INFO L131 PetriNetUnfolder]: For 272525/272950 co-relation queries the response was YES. [2022-12-13 11:42:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70567 conditions, 8382 events. 4790/8382 cut-off events. For 272525/272950 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 57304 event pairs, 70 based on Foata normal form. 219/8517 useless extension candidates. Maximal degree in co-relation 70472. Up to 3135 conditions per place. [2022-12-13 11:42:12,460 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 454 selfloop transitions, 384 changer transitions 331/1225 dead transitions. [2022-12-13 11:42:12,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1225 transitions, 24071 flow [2022-12-13 11:42:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:42:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-13 11:42:12,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5041 transitions. [2022-12-13 11:42:12,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43941771269177127 [2022-12-13 11:42:12,464 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5041 transitions. [2022-12-13 11:42:12,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5041 transitions. [2022-12-13 11:42:12,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:42:12,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5041 transitions. [2022-12-13 11:42:12,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 105.02083333333333) internal successors, (5041), 48 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:12,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:12,476 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 239.0) internal successors, (11711), 49 states have internal predecessors, (11711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:12,476 INFO L175 Difference]: Start difference. First operand has 271 places, 603 transitions, 10734 flow. Second operand 48 states and 5041 transitions. [2022-12-13 11:42:12,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1225 transitions, 24071 flow [2022-12-13 11:42:14,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1225 transitions, 21063 flow, removed 1468 selfloop flow, removed 49 redundant places. [2022-12-13 11:42:14,061 INFO L231 Difference]: Finished difference. Result has 244 places, 738 transitions, 13348 flow [2022-12-13 11:42:14,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=9772, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=13348, PETRI_PLACES=244, PETRI_TRANSITIONS=738} [2022-12-13 11:42:14,062 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 201 predicate places. [2022-12-13 11:42:14,062 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 738 transitions, 13348 flow [2022-12-13 11:42:14,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 100.76190476190476) internal successors, (2116), 21 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:14,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:42:14,062 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:14,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:42:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:14,264 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:42:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash 801495246, now seen corresponding path program 5 times [2022-12-13 11:42:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:14,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251797010] [2022-12-13 11:42:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:14,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:14,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:14,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251797010] [2022-12-13 11:42:14,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251797010] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:14,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517157488] [2022-12-13 11:42:14,519 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:42:14,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:14,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:14,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:14,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:42:14,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 11:42:14,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:42:14,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:42:14,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:14,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:42:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:15,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517157488] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:42:15,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:42:15,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-12-13 11:42:15,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508644658] [2022-12-13 11:42:15,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:42:15,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:42:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:15,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:42:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:42:15,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:42:15,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 738 transitions, 13348 flow. Second operand has 20 states, 20 states have (on average 100.8) internal successors, (2016), 20 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:15,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:42:15,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:42:15,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:42:19,495 INFO L130 PetriNetUnfolder]: 6111/10462 cut-off events. [2022-12-13 11:42:19,496 INFO L131 PetriNetUnfolder]: For 207204/207254 co-relation queries the response was YES. [2022-12-13 11:42:19,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84582 conditions, 10462 events. 6111/10462 cut-off events. For 207204/207254 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 71314 event pairs, 94 based on Foata normal form. 352/10804 useless extension candidates. Maximal degree in co-relation 84511. Up to 3973 conditions per place. [2022-12-13 11:42:19,570 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 572 selfloop transitions, 422 changer transitions 380/1425 dead transitions. [2022-12-13 11:42:19,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1425 transitions, 28723 flow [2022-12-13 11:42:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 11:42:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-13 11:42:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4903 transitions. [2022-12-13 11:42:19,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43648179471200926 [2022-12-13 11:42:19,574 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4903 transitions. [2022-12-13 11:42:19,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4903 transitions. [2022-12-13 11:42:19,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:42:19,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4903 transitions. [2022-12-13 11:42:19,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 104.31914893617021) internal successors, (4903), 47 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:19,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:19,585 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 239.0) internal successors, (11472), 48 states have internal predecessors, (11472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:19,585 INFO L175 Difference]: Start difference. First operand has 244 places, 738 transitions, 13348 flow. Second operand 47 states and 4903 transitions. [2022-12-13 11:42:19,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1425 transitions, 28723 flow [2022-12-13 11:42:21,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1425 transitions, 27049 flow, removed 772 selfloop flow, removed 26 redundant places. [2022-12-13 11:42:21,617 INFO L231 Difference]: Finished difference. Result has 268 places, 882 transitions, 16901 flow [2022-12-13 11:42:21,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=12530, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=16901, PETRI_PLACES=268, PETRI_TRANSITIONS=882} [2022-12-13 11:42:21,618 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2022-12-13 11:42:21,618 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 882 transitions, 16901 flow [2022-12-13 11:42:21,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.8) internal successors, (2016), 20 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:21,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:42:21,618 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:21,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:42:21,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:21,820 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:42:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1809499716, now seen corresponding path program 6 times [2022-12-13 11:42:21,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:21,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383336038] [2022-12-13 11:42:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:22,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383336038] [2022-12-13 11:42:22,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383336038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:22,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140552581] [2022-12-13 11:42:22,211 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:42:22,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:22,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:22,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:42:22,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 11:42:22,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:42:22,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:42:22,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:22,561 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 11:42:22,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:42:23,471 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 11:42:23,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140552581] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:42:23,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:42:23,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 11:42:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349169056] [2022-12-13 11:42:23,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:42:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:42:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:42:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:42:23,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 239 [2022-12-13 11:42:23,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 882 transitions, 16901 flow. Second operand has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:23,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:42:23,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 239 [2022-12-13 11:42:23,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:42:32,013 INFO L130 PetriNetUnfolder]: 8501/14044 cut-off events. [2022-12-13 11:42:32,013 INFO L131 PetriNetUnfolder]: For 261187/261187 co-relation queries the response was YES. [2022-12-13 11:42:32,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114333 conditions, 14044 events. 8501/14044 cut-off events. For 261187/261187 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 94581 event pairs, 167 based on Foata normal form. 320/14364 useless extension candidates. Maximal degree in co-relation 114256. Up to 5137 conditions per place. [2022-12-13 11:42:32,133 INFO L137 encePairwiseOnDemand]: 229/239 looper letters, 722 selfloop transitions, 811 changer transitions 461/1994 dead transitions. [2022-12-13 11:42:32,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1994 transitions, 41976 flow [2022-12-13 11:42:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-12-13 11:42:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2022-12-13 11:42:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 9541 transitions. [2022-12-13 11:42:32,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4246861924686193 [2022-12-13 11:42:32,140 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 9541 transitions. [2022-12-13 11:42:32,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 9541 transitions. [2022-12-13 11:42:32,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:42:32,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 9541 transitions. [2022-12-13 11:42:32,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 101.5) internal successors, (9541), 94 states have internal predecessors, (9541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:32,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 239.0) internal successors, (22705), 95 states have internal predecessors, (22705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:32,162 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 239.0) internal successors, (22705), 95 states have internal predecessors, (22705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:32,162 INFO L175 Difference]: Start difference. First operand has 268 places, 882 transitions, 16901 flow. Second operand 94 states and 9541 transitions. [2022-12-13 11:42:32,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1994 transitions, 41976 flow [2022-12-13 11:42:35,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 1994 transitions, 39412 flow, removed 1251 selfloop flow, removed 23 redundant places. [2022-12-13 11:42:35,643 INFO L231 Difference]: Finished difference. Result has 379 places, 1211 transitions, 25756 flow [2022-12-13 11:42:35,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=15915, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=25756, PETRI_PLACES=379, PETRI_TRANSITIONS=1211} [2022-12-13 11:42:35,644 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2022-12-13 11:42:35,644 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 1211 transitions, 25756 flow [2022-12-13 11:42:35,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:35,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:42:35,644 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:35,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:42:35,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 11:42:35,846 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:42:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1186567788, now seen corresponding path program 7 times [2022-12-13 11:42:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885835996] [2022-12-13 11:42:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:36,226 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 11:42:36,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885835996] [2022-12-13 11:42:36,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885835996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275061304] [2022-12-13 11:42:36,227 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:42:36,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:36,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:36,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:42:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:36,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:42:36,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:36,637 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 11:42:36,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:42:37,657 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 11:42:37,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275061304] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:42:37,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:42:37,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 11:42:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647943351] [2022-12-13 11:42:37,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:42:37,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:42:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:37,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:42:37,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:42:37,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:42:37,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1211 transitions, 25756 flow. Second operand has 25 states, 25 states have (on average 100.44) internal successors, (2511), 25 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:37,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:42:37,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:42:37,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:42:47,468 INFO L130 PetriNetUnfolder]: 9444/16145 cut-off events. [2022-12-13 11:42:47,468 INFO L131 PetriNetUnfolder]: For 702838/702917 co-relation queries the response was YES. [2022-12-13 11:42:47,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158671 conditions, 16145 events. 9444/16145 cut-off events. For 702838/702917 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 117913 event pairs, 98 based on Foata normal form. 361/16494 useless extension candidates. Maximal degree in co-relation 158548. Up to 6241 conditions per place. [2022-12-13 11:42:47,686 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 871 selfloop transitions, 798 changer transitions 349/2069 dead transitions. [2022-12-13 11:42:47,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 2069 transitions, 49066 flow [2022-12-13 11:42:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-13 11:42:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-12-13 11:42:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 7299 transitions. [2022-12-13 11:42:47,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43628212791392706 [2022-12-13 11:42:47,695 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 7299 transitions. [2022-12-13 11:42:47,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 7299 transitions. [2022-12-13 11:42:47,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:42:47,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 7299 transitions. [2022-12-13 11:42:47,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 104.27142857142857) internal successors, (7299), 70 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:47,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 239.0) internal successors, (16969), 71 states have internal predecessors, (16969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:47,719 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 239.0) internal successors, (16969), 71 states have internal predecessors, (16969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:47,719 INFO L175 Difference]: Start difference. First operand has 379 places, 1211 transitions, 25756 flow. Second operand 70 states and 7299 transitions. [2022-12-13 11:42:47,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 2069 transitions, 49066 flow [2022-12-13 11:42:53,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2069 transitions, 42894 flow, removed 3042 selfloop flow, removed 63 redundant places. [2022-12-13 11:42:53,426 INFO L231 Difference]: Finished difference. Result has 360 places, 1456 transitions, 31669 flow [2022-12-13 11:42:53,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=23431, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=31669, PETRI_PLACES=360, PETRI_TRANSITIONS=1456} [2022-12-13 11:42:53,427 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2022-12-13 11:42:53,427 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 1456 transitions, 31669 flow [2022-12-13 11:42:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.44) internal successors, (2511), 25 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:53,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:42:53,428 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:53,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:42:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 11:42:53,629 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:42:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1762722700, now seen corresponding path program 8 times [2022-12-13 11:42:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:53,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173667359] [2022-12-13 11:42:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:53,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173667359] [2022-12-13 11:42:53,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173667359] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:42:53,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501063093] [2022-12-13 11:42:53,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:42:53,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:42:53,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:42:53,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:42:53,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:42:53,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:42:53,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:42:53,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:42:53,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:42:54,306 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 11:42:54,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:42:55,442 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 11:42:55,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501063093] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:42:55,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:42:55,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 11:42:55,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393112892] [2022-12-13 11:42:55,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:42:55,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:42:55,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:42:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:42:55,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 239 [2022-12-13 11:42:55,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1456 transitions, 31669 flow. Second operand has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:55,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:42:55,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 239 [2022-12-13 11:42:55,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:43:08,290 INFO L130 PetriNetUnfolder]: 12752/21017 cut-off events. [2022-12-13 11:43:08,290 INFO L131 PetriNetUnfolder]: For 480713/480713 co-relation queries the response was YES. [2022-12-13 11:43:08,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182768 conditions, 21017 events. 12752/21017 cut-off events. For 480713/480713 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 150736 event pairs, 265 based on Foata normal form. 458/21475 useless extension candidates. Maximal degree in co-relation 182668. Up to 7447 conditions per place. [2022-12-13 11:43:08,514 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 1123 selfloop transitions, 950 changer transitions 589/2662 dead transitions. [2022-12-13 11:43:08,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2662 transitions, 61402 flow [2022-12-13 11:43:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-12-13 11:43:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-12-13 11:43:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 8922 transitions. [2022-12-13 11:43:08,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4242107265119817 [2022-12-13 11:43:08,522 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 8922 transitions. [2022-12-13 11:43:08,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 8922 transitions. [2022-12-13 11:43:08,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:43:08,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 8922 transitions. [2022-12-13 11:43:08,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 101.38636363636364) internal successors, (8922), 88 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:08,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 239.0) internal successors, (21271), 89 states have internal predecessors, (21271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:08,541 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 239.0) internal successors, (21271), 89 states have internal predecessors, (21271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:08,541 INFO L175 Difference]: Start difference. First operand has 360 places, 1456 transitions, 31669 flow. Second operand 88 states and 8922 transitions. [2022-12-13 11:43:08,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 2662 transitions, 61402 flow [2022-12-13 11:43:17,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 2662 transitions, 58292 flow, removed 1487 selfloop flow, removed 33 redundant places. [2022-12-13 11:43:17,209 INFO L231 Difference]: Finished difference. Result has 436 places, 1772 transitions, 40230 flow [2022-12-13 11:43:17,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=29661, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=40230, PETRI_PLACES=436, PETRI_TRANSITIONS=1772} [2022-12-13 11:43:17,210 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 393 predicate places. [2022-12-13 11:43:17,211 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 1772 transitions, 40230 flow [2022-12-13 11:43:17,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:17,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:43:17,211 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:17,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 11:43:17,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 11:43:17,413 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:43:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1238970220, now seen corresponding path program 9 times [2022-12-13 11:43:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:17,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960502493] [2022-12-13 11:43:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:17,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:17,702 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 11:43:17,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960502493] [2022-12-13 11:43:17,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960502493] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:43:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233401014] [2022-12-13 11:43:17,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:43:17,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:43:17,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:17,704 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:43:17,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:43:17,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 11:43:17,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:43:17,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:43:17,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:18,089 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 11:43:18,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:43:19,040 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 11:43:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233401014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:43:19,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:43:19,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 11:43:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172678172] [2022-12-13 11:43:19,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:43:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:43:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:43:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:43:19,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:43:19,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 1772 transitions, 40230 flow. Second operand has 25 states, 25 states have (on average 100.44) internal successors, (2511), 25 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:19,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:43:19,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:43:19,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:43:34,065 INFO L130 PetriNetUnfolder]: 13189/22620 cut-off events. [2022-12-13 11:43:34,065 INFO L131 PetriNetUnfolder]: For 1006667/1006744 co-relation queries the response was YES. [2022-12-13 11:43:34,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226840 conditions, 22620 events. 13189/22620 cut-off events. For 1006667/1006744 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 174972 event pairs, 190 based on Foata normal form. 457/23021 useless extension candidates. Maximal degree in co-relation 226709. Up to 8547 conditions per place. [2022-12-13 11:43:34,391 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 1087 selfloop transitions, 1180 changer transitions 418/2736 dead transitions. [2022-12-13 11:43:34,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2736 transitions, 66569 flow [2022-12-13 11:43:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-13 11:43:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-12-13 11:43:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 7621 transitions. [2022-12-13 11:43:34,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4368086203931908 [2022-12-13 11:43:34,397 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 7621 transitions. [2022-12-13 11:43:34,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 7621 transitions. [2022-12-13 11:43:34,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:43:34,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 7621 transitions. [2022-12-13 11:43:34,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 104.3972602739726) internal successors, (7621), 73 states have internal predecessors, (7621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:34,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 239.0) internal successors, (17686), 74 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:34,414 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 239.0) internal successors, (17686), 74 states have internal predecessors, (17686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:34,414 INFO L175 Difference]: Start difference. First operand has 436 places, 1772 transitions, 40230 flow. Second operand 73 states and 7621 transitions. [2022-12-13 11:43:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2736 transitions, 66569 flow [2022-12-13 11:43:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 2736 transitions, 61989 flow, removed 2035 selfloop flow, removed 61 redundant places. [2022-12-13 11:43:44,341 INFO L231 Difference]: Finished difference. Result has 433 places, 2002 transitions, 48079 flow [2022-12-13 11:43:44,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=38091, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=892, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=48079, PETRI_PLACES=433, PETRI_TRANSITIONS=2002} [2022-12-13 11:43:44,343 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2022-12-13 11:43:44,343 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 2002 transitions, 48079 flow [2022-12-13 11:43:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.44) internal successors, (2511), 25 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:44,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:43:44,343 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:44,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 11:43:44,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 11:43:44,544 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:43:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1268187208, now seen corresponding path program 10 times [2022-12-13 11:43:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:44,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128249365] [2022-12-13 11:43:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:44,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128249365] [2022-12-13 11:43:44,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128249365] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:43:44,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190691953] [2022-12-13 11:43:44,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:43:44,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:43:44,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:44,839 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:43:44,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 11:43:44,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:43:44,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:43:44,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:43:44,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:43:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:45,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:43:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:46,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190691953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:43:46,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:43:46,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 11:43:46,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450418122] [2022-12-13 11:43:46,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:43:46,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:43:46,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:43:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:43:46,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:43:46,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 2002 transitions, 48079 flow. Second operand has 25 states, 25 states have (on average 100.32) internal successors, (2508), 25 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:46,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:43:46,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:43:46,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:44:01,971 INFO L130 PetriNetUnfolder]: 13873/23831 cut-off events. [2022-12-13 11:44:01,971 INFO L131 PetriNetUnfolder]: For 659541/659665 co-relation queries the response was YES. [2022-12-13 11:44:02,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223794 conditions, 23831 events. 13873/23831 cut-off events. For 659541/659665 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 185917 event pairs, 178 based on Foata normal form. 338/24161 useless extension candidates. Maximal degree in co-relation 223678. Up to 9323 conditions per place. [2022-12-13 11:44:02,349 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 1466 selfloop transitions, 976 changer transitions 239/2732 dead transitions. [2022-12-13 11:44:02,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 2732 transitions, 68783 flow [2022-12-13 11:44:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-13 11:44:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-12-13 11:44:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 6981 transitions. [2022-12-13 11:44:02,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43595828389433583 [2022-12-13 11:44:02,354 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 6981 transitions. [2022-12-13 11:44:02,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 6981 transitions. [2022-12-13 11:44:02,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:44:02,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 6981 transitions. [2022-12-13 11:44:02,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 104.19402985074628) internal successors, (6981), 67 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:02,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 239.0) internal successors, (16252), 68 states have internal predecessors, (16252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:02,369 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 239.0) internal successors, (16252), 68 states have internal predecessors, (16252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:02,370 INFO L175 Difference]: Start difference. First operand has 433 places, 2002 transitions, 48079 flow. Second operand 67 states and 6981 transitions. [2022-12-13 11:44:02,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 2732 transitions, 68783 flow [2022-12-13 11:44:12,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 2732 transitions, 66363 flow, removed 1001 selfloop flow, removed 39 redundant places. [2022-12-13 11:44:13,000 INFO L231 Difference]: Finished difference. Result has 454 places, 2231 transitions, 55342 flow [2022-12-13 11:44:13,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=46166, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=756, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=55342, PETRI_PLACES=454, PETRI_TRANSITIONS=2231} [2022-12-13 11:44:13,001 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 411 predicate places. [2022-12-13 11:44:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 2231 transitions, 55342 flow [2022-12-13 11:44:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.32) internal successors, (2508), 25 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:13,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:44:13,002 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:13,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 11:44:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:13,203 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:44:13,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1396235514, now seen corresponding path program 2 times [2022-12-13 11:44:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:13,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723842473] [2022-12-13 11:44:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:13,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:13,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723842473] [2022-12-13 11:44:13,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723842473] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:44:13,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837054685] [2022-12-13 11:44:13,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:44:13,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:13,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:44:13,548 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:44:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 11:44:13,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:44:13,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:44:13,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:44:13,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:44:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:13,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:44:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:14,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837054685] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:44:14,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:44:14,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-13 11:44:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526629708] [2022-12-13 11:44:14,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:44:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:44:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:44:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:44:14,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 239 [2022-12-13 11:44:14,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 2231 transitions, 55342 flow. Second operand has 25 states, 25 states have (on average 102.68) internal successors, (2567), 25 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:14,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:44:14,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 239 [2022-12-13 11:44:14,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:44:29,794 INFO L130 PetriNetUnfolder]: 14185/24793 cut-off events. [2022-12-13 11:44:29,794 INFO L131 PetriNetUnfolder]: For 690546/692635 co-relation queries the response was YES. [2022-12-13 11:44:30,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238765 conditions, 24793 events. 14185/24793 cut-off events. For 690546/692635 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 198974 event pairs, 198 based on Foata normal form. 199/24626 useless extension candidates. Maximal degree in co-relation 238646. Up to 11245 conditions per place. [2022-12-13 11:44:30,143 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 1686 selfloop transitions, 628 changer transitions 447/2957 dead transitions. [2022-12-13 11:44:30,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 2957 transitions, 76904 flow [2022-12-13 11:44:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 11:44:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-13 11:44:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5684 transitions. [2022-12-13 11:44:30,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44872503355174864 [2022-12-13 11:44:30,148 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5684 transitions. [2022-12-13 11:44:30,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5684 transitions. [2022-12-13 11:44:30,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:44:30,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5684 transitions. [2022-12-13 11:44:30,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 107.24528301886792) internal successors, (5684), 53 states have internal predecessors, (5684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:30,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 239.0) internal successors, (12906), 54 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:30,159 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 239.0) internal successors, (12906), 54 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:30,159 INFO L175 Difference]: Start difference. First operand has 454 places, 2231 transitions, 55342 flow. Second operand 53 states and 5684 transitions. [2022-12-13 11:44:30,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 2957 transitions, 76904 flow [2022-12-13 11:44:42,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 2957 transitions, 72142 flow, removed 2034 selfloop flow, removed 37 redundant places. [2022-12-13 11:44:42,171 INFO L231 Difference]: Finished difference. Result has 468 places, 2337 transitions, 57034 flow [2022-12-13 11:44:42,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=52176, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=57034, PETRI_PLACES=468, PETRI_TRANSITIONS=2337} [2022-12-13 11:44:42,173 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 425 predicate places. [2022-12-13 11:44:42,174 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 2337 transitions, 57034 flow [2022-12-13 11:44:42,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.68) internal successors, (2567), 25 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:42,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:44:42,174 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:42,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 11:44:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 11:44:42,376 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:44:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash 73432876, now seen corresponding path program 11 times [2022-12-13 11:44:42,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:42,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031363763] [2022-12-13 11:44:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:42,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:42,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:42,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031363763] [2022-12-13 11:44:42,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031363763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:44:42,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951271294] [2022-12-13 11:44:42,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:44:42,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:42,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:44:42,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:44:42,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 11:44:42,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 11:44:42,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:44:42,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:44:42,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:44:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:43,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:44:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:44,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951271294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:44:44,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:44:44,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-12-13 11:44:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559620601] [2022-12-13 11:44:44,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:44:44,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 11:44:44,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:44,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 11:44:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:44:44,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:44:44,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 2337 transitions, 57034 flow. Second operand has 27 states, 27 states have (on average 100.48148148148148) internal successors, (2713), 27 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:44,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:44:44,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:44:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:45:05,022 INFO L130 PetriNetUnfolder]: 17147/29516 cut-off events. [2022-12-13 11:45:05,022 INFO L131 PetriNetUnfolder]: For 973917/974070 co-relation queries the response was YES. [2022-12-13 11:45:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289324 conditions, 29516 events. 17147/29516 cut-off events. For 973917/974070 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 236936 event pairs, 346 based on Foata normal form. 421/29921 useless extension candidates. Maximal degree in co-relation 289203. Up to 11253 conditions per place. [2022-12-13 11:45:05,522 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 1695 selfloop transitions, 1321 changer transitions 307/3393 dead transitions. [2022-12-13 11:45:05,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 3393 transitions, 90305 flow [2022-12-13 11:45:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:45:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-13 11:45:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 7103 transitions. [2022-12-13 11:45:05,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4370539010583313 [2022-12-13 11:45:05,531 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 7103 transitions. [2022-12-13 11:45:05,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 7103 transitions. [2022-12-13 11:45:05,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:45:05,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 7103 transitions. [2022-12-13 11:45:05,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 104.45588235294117) internal successors, (7103), 68 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:05,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 239.0) internal successors, (16491), 69 states have internal predecessors, (16491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:05,550 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 239.0) internal successors, (16491), 69 states have internal predecessors, (16491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:05,550 INFO L175 Difference]: Start difference. First operand has 468 places, 2337 transitions, 57034 flow. Second operand 68 states and 7103 transitions. [2022-12-13 11:45:05,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 3393 transitions, 90305 flow [2022-12-13 11:45:16,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 3393 transitions, 85543 flow, removed 1343 selfloop flow, removed 33 redundant places. [2022-12-13 11:45:16,224 INFO L231 Difference]: Finished difference. Result has 495 places, 2796 transitions, 71519 flow [2022-12-13 11:45:16,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=54592, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=893, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=71519, PETRI_PLACES=495, PETRI_TRANSITIONS=2796} [2022-12-13 11:45:16,226 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 452 predicate places. [2022-12-13 11:45:16,226 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 2796 transitions, 71519 flow [2022-12-13 11:45:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.48148148148148) internal successors, (2713), 27 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:16,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:45:16,226 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:16,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 11:45:16,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 11:45:16,428 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:45:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash -35276790, now seen corresponding path program 12 times [2022-12-13 11:45:16,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:16,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499028433] [2022-12-13 11:45:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:16,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499028433] [2022-12-13 11:45:16,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499028433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:45:16,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855460430] [2022-12-13 11:45:16,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:45:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:45:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:45:16,782 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:45:16,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 11:45:16,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 11:45:16,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:45:16,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:45:16,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:45:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:45:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:18,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855460430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:45:18,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:45:18,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-12-13 11:45:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801974264] [2022-12-13 11:45:18,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:45:18,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 11:45:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 11:45:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:45:18,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:45:18,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 2796 transitions, 71519 flow. Second operand has 27 states, 27 states have (on average 100.48148148148148) internal successors, (2713), 27 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:18,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:45:18,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:45:18,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:45:44,155 INFO L130 PetriNetUnfolder]: 18490/32568 cut-off events. [2022-12-13 11:45:44,155 INFO L131 PetriNetUnfolder]: For 1043316/1045963 co-relation queries the response was YES. [2022-12-13 11:45:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323190 conditions, 32568 events. 18490/32568 cut-off events. For 1043316/1045963 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 274741 event pairs, 276 based on Foata normal form. 367/32493 useless extension candidates. Maximal degree in co-relation 323070. Up to 12441 conditions per place. [2022-12-13 11:45:44,654 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 1687 selfloop transitions, 1405 changer transitions 602/3935 dead transitions. [2022-12-13 11:45:44,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 3935 transitions, 105020 flow [2022-12-13 11:45:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-12-13 11:45:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-12-13 11:45:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7581 transitions. [2022-12-13 11:45:44,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44055090655509066 [2022-12-13 11:45:44,660 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7581 transitions. [2022-12-13 11:45:44,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7581 transitions. [2022-12-13 11:45:44,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:45:44,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7581 transitions. [2022-12-13 11:45:44,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 105.29166666666667) internal successors, (7581), 72 states have internal predecessors, (7581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:44,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 239.0) internal successors, (17447), 73 states have internal predecessors, (17447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:44,676 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 239.0) internal successors, (17447), 73 states have internal predecessors, (17447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:44,676 INFO L175 Difference]: Start difference. First operand has 495 places, 2796 transitions, 71519 flow. Second operand 72 states and 7581 transitions. [2022-12-13 11:45:44,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 3935 transitions, 105020 flow [2022-12-13 11:46:04,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 3935 transitions, 98964 flow, removed 2925 selfloop flow, removed 29 redundant places. [2022-12-13 11:46:04,272 INFO L231 Difference]: Finished difference. Result has 538 places, 3064 transitions, 79593 flow [2022-12-13 11:46:04,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=67939, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=79593, PETRI_PLACES=538, PETRI_TRANSITIONS=3064} [2022-12-13 11:46:04,275 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 495 predicate places. [2022-12-13 11:46:04,275 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 3064 transitions, 79593 flow [2022-12-13 11:46:04,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.48148148148148) internal successors, (2713), 27 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:04,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:04,275 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:04,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 11:46:04,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:04,477 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:46:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2002690590, now seen corresponding path program 13 times [2022-12-13 11:46:04,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:04,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852752831] [2022-12-13 11:46:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:04,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:04,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852752831] [2022-12-13 11:46:04,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852752831] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:04,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511524564] [2022-12-13 11:46:04,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:46:04,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:04,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:04,924 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:46:04,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 11:46:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:04,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:46:04,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:46:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:05,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:46:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:06,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511524564] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:46:06,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:46:06,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-12-13 11:46:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134162810] [2022-12-13 11:46:06,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:46:06,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 11:46:06,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:06,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 11:46:06,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:46:06,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:46:06,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 3064 transitions, 79593 flow. Second operand has 27 states, 27 states have (on average 100.37037037037037) internal successors, (2710), 27 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:06,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:46:06,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:46:06,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:46:37,590 INFO L130 PetriNetUnfolder]: 21558/38154 cut-off events. [2022-12-13 11:46:37,590 INFO L131 PetriNetUnfolder]: For 1490258/1493239 co-relation queries the response was YES. [2022-12-13 11:46:38,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389413 conditions, 38154 events. 21558/38154 cut-off events. For 1490258/1493239 co-relation queries the response was YES. Maximal size of possible extension queue 1502. Compared 331668 event pairs, 418 based on Foata normal form. 411/38073 useless extension candidates. Maximal degree in co-relation 389286. Up to 14283 conditions per place. [2022-12-13 11:46:38,206 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 1998 selfloop transitions, 1674 changer transitions 735/4637 dead transitions. [2022-12-13 11:46:38,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 4637 transitions, 125808 flow [2022-12-13 11:46:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-13 11:46:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2022-12-13 11:46:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 9047 transitions. [2022-12-13 11:46:38,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401576335506471 [2022-12-13 11:46:38,213 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 9047 transitions. [2022-12-13 11:46:38,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 9047 transitions. [2022-12-13 11:46:38,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:46:38,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 9047 transitions. [2022-12-13 11:46:38,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 105.19767441860465) internal successors, (9047), 86 states have internal predecessors, (9047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:38,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 239.0) internal successors, (20793), 87 states have internal predecessors, (20793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:38,231 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 239.0) internal successors, (20793), 87 states have internal predecessors, (20793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:38,231 INFO L175 Difference]: Start difference. First operand has 538 places, 3064 transitions, 79593 flow. Second operand 86 states and 9047 transitions. [2022-12-13 11:46:38,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 4637 transitions, 125808 flow [2022-12-13 11:46:58,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 4637 transitions, 123340 flow, removed 1138 selfloop flow, removed 33 redundant places. [2022-12-13 11:46:58,695 INFO L231 Difference]: Finished difference. Result has 591 places, 3571 transitions, 99170 flow [2022-12-13 11:46:58,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=77862, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=99170, PETRI_PLACES=591, PETRI_TRANSITIONS=3571} [2022-12-13 11:46:58,697 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 548 predicate places. [2022-12-13 11:46:58,697 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 3571 transitions, 99170 flow [2022-12-13 11:46:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.37037037037037) internal successors, (2710), 27 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:58,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:58,697 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:58,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 11:46:58,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:58,898 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:46:58,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1194730260, now seen corresponding path program 6 times [2022-12-13 11:46:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:58,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550589058] [2022-12-13 11:46:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:58,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550589058] [2022-12-13 11:47:00,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550589058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:47:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306984359] [2022-12-13 11:47:00,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:47:00,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:47:00,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:47:00,029 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:47:00,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 11:47:00,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-13 11:47:00,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:47:00,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:47:00,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:47:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:00,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:47:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:01,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306984359] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:47:01,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:47:01,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 11:47:01,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943059065] [2022-12-13 11:47:01,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:47:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 11:47:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 11:47:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=727, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:47:01,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 239 [2022-12-13 11:47:01,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 3571 transitions, 99170 flow. Second operand has 31 states, 31 states have (on average 102.54838709677419) internal successors, (3179), 31 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:01,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:01,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 239 [2022-12-13 11:47:01,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:47:40,769 INFO L130 PetriNetUnfolder]: 24486/42619 cut-off events. [2022-12-13 11:47:40,770 INFO L131 PetriNetUnfolder]: For 1863741/1863980 co-relation queries the response was YES. [2022-12-13 11:47:41,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455480 conditions, 42619 events. 24486/42619 cut-off events. For 1863741/1863980 co-relation queries the response was YES. Maximal size of possible extension queue 1556. Compared 365947 event pairs, 632 based on Foata normal form. 727/43292 useless extension candidates. Maximal degree in co-relation 455342. Up to 17504 conditions per place. [2022-12-13 11:47:41,538 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 2711 selfloop transitions, 1371 changer transitions 598/4855 dead transitions. [2022-12-13 11:47:41,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 4855 transitions, 143724 flow [2022-12-13 11:47:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-13 11:47:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-12-13 11:47:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 7575 transitions. [2022-12-13 11:47:41,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44640226295008545 [2022-12-13 11:47:41,544 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 7575 transitions. [2022-12-13 11:47:41,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 7575 transitions. [2022-12-13 11:47:41,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:47:41,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 7575 transitions. [2022-12-13 11:47:41,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 106.69014084507042) internal successors, (7575), 71 states have internal predecessors, (7575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:41,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 239.0) internal successors, (17208), 72 states have internal predecessors, (17208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:41,559 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 239.0) internal successors, (17208), 72 states have internal predecessors, (17208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:41,559 INFO L175 Difference]: Start difference. First operand has 591 places, 3571 transitions, 99170 flow. Second operand 71 states and 7575 transitions. [2022-12-13 11:47:41,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 4855 transitions, 143724 flow [2022-12-13 11:48:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 4855 transitions, 138257 flow, removed 2429 selfloop flow, removed 41 redundant places. [2022-12-13 11:48:10,790 INFO L231 Difference]: Finished difference. Result has 610 places, 3980 transitions, 111485 flow [2022-12-13 11:48:10,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=95078, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=999, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=111485, PETRI_PLACES=610, PETRI_TRANSITIONS=3980} [2022-12-13 11:48:10,792 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 567 predicate places. [2022-12-13 11:48:10,792 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 3980 transitions, 111485 flow [2022-12-13 11:48:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 102.54838709677419) internal successors, (3179), 31 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:10,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:10,793 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:10,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 11:48:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 11:48:10,994 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:48:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1993122260, now seen corresponding path program 14 times [2022-12-13 11:48:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772640165] [2022-12-13 11:48:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:11,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:11,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772640165] [2022-12-13 11:48:11,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772640165] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:48:11,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494109985] [2022-12-13 11:48:11,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:48:11,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:48:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:48:11,528 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:48:11,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 11:48:11,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:48:11,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:48:11,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:48:11,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:48:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:12,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:48:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:14,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494109985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:48:14,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:48:14,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 11:48:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435836716] [2022-12-13 11:48:14,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:48:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 11:48:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 11:48:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:48:14,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:48:14,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 3980 transitions, 111485 flow. Second operand has 31 states, 31 states have (on average 100.16129032258064) internal successors, (3105), 31 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:14,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:14,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:48:14,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:49:10,796 INFO L130 PetriNetUnfolder]: 29458/51289 cut-off events. [2022-12-13 11:49:10,797 INFO L131 PetriNetUnfolder]: For 2283643/2283914 co-relation queries the response was YES. [2022-12-13 11:49:11,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563274 conditions, 51289 events. 29458/51289 cut-off events. For 2283643/2283914 co-relation queries the response was YES. Maximal size of possible extension queue 2160. Compared 454773 event pairs, 480 based on Foata normal form. 927/52170 useless extension candidates. Maximal degree in co-relation 563131. Up to 18741 conditions per place. [2022-12-13 11:49:11,780 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 2563 selfloop transitions, 2492 changer transitions 746/5972 dead transitions. [2022-12-13 11:49:11,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 5972 transitions, 179258 flow [2022-12-13 11:49:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-12-13 11:49:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2022-12-13 11:49:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 11279 transitions. [2022-12-13 11:49:11,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4369673020300635 [2022-12-13 11:49:11,788 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 11279 transitions. [2022-12-13 11:49:11,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 11279 transitions. [2022-12-13 11:49:11,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:49:11,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 11279 transitions. [2022-12-13 11:49:11,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 104.43518518518519) internal successors, (11279), 108 states have internal predecessors, (11279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:11,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 239.0) internal successors, (26051), 109 states have internal predecessors, (26051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:11,810 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 239.0) internal successors, (26051), 109 states have internal predecessors, (26051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:11,810 INFO L175 Difference]: Start difference. First operand has 610 places, 3980 transitions, 111485 flow. Second operand 108 states and 11279 transitions. [2022-12-13 11:49:11,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 5972 transitions, 179258 flow [2022-12-13 11:50:20,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 5972 transitions, 169599 flow, removed 3692 selfloop flow, removed 33 redundant places. [2022-12-13 11:50:20,198 INFO L231 Difference]: Finished difference. Result has 702 places, 4755 transitions, 138822 flow [2022-12-13 11:50:20,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=105689, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1704, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2037, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=138822, PETRI_PLACES=702, PETRI_TRANSITIONS=4755} [2022-12-13 11:50:20,200 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 659 predicate places. [2022-12-13 11:50:20,200 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 4755 transitions, 138822 flow [2022-12-13 11:50:20,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 100.16129032258064) internal successors, (3105), 31 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:20,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:50:20,200 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:20,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 11:50:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:20,402 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:50:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash 10193416, now seen corresponding path program 15 times [2022-12-13 11:50:20,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:20,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625842415] [2022-12-13 11:50:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625842415] [2022-12-13 11:50:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625842415] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:50:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654080623] [2022-12-13 11:50:20,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:50:20,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:50:20,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:50:20,924 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:50:20,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 11:50:21,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 11:50:21,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:50:21,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:50:21,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:50:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:21,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:50:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:23,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654080623] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:50:23,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:50:23,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 11:50:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581541775] [2022-12-13 11:50:23,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:50:23,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 11:50:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 11:50:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:50:23,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 239 [2022-12-13 11:50:23,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 4755 transitions, 138822 flow. Second operand has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:23,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:50:23,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 239 [2022-12-13 11:50:23,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:51:44,057 INFO L130 PetriNetUnfolder]: 35511/59838 cut-off events. [2022-12-13 11:51:44,058 INFO L131 PetriNetUnfolder]: For 2556047/2556047 co-relation queries the response was YES. [2022-12-13 11:51:45,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648245 conditions, 59838 events. 35511/59838 cut-off events. For 2556047/2556047 co-relation queries the response was YES. Maximal size of possible extension queue 2322. Compared 514265 event pairs, 861 based on Foata normal form. 772/60610 useless extension candidates. Maximal degree in co-relation 648076. Up to 22063 conditions per place. [2022-12-13 11:51:45,447 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 3445 selfloop transitions, 2527 changer transitions 921/6893 dead transitions. [2022-12-13 11:51:45,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 6893 transitions, 212364 flow [2022-12-13 11:51:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-12-13 11:51:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2022-12-13 11:51:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 16030 transitions. [2022-12-13 11:51:45,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42450082093109476 [2022-12-13 11:51:45,458 INFO L72 ComplementDD]: Start complementDD. Operand 158 states and 16030 transitions. [2022-12-13 11:51:45,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 16030 transitions. [2022-12-13 11:51:45,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:51:45,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 158 states and 16030 transitions. [2022-12-13 11:51:45,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 159 states, 158 states have (on average 101.45569620253164) internal successors, (16030), 158 states have internal predecessors, (16030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:51:45,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 159 states, 159 states have (on average 239.0) internal successors, (38001), 159 states have internal predecessors, (38001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:51:45,491 INFO L81 ComplementDD]: Finished complementDD. Result has 159 states, 159 states have (on average 239.0) internal successors, (38001), 159 states have internal predecessors, (38001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:51:45,491 INFO L175 Difference]: Start difference. First operand has 702 places, 4755 transitions, 138822 flow. Second operand 158 states and 16030 transitions. [2022-12-13 11:51:45,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 6893 transitions, 212364 flow [2022-12-13 11:53:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 6893 transitions, 200878 flow, removed 5487 selfloop flow, removed 57 redundant places. [2022-12-13 11:53:37,463 INFO L231 Difference]: Finished difference. Result has 872 places, 5356 transitions, 161405 flow [2022-12-13 11:53:37,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=131937, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1881, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=158, PETRI_FLOW=161405, PETRI_PLACES=872, PETRI_TRANSITIONS=5356} [2022-12-13 11:53:37,466 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 829 predicate places. [2022-12-13 11:53:37,466 INFO L495 AbstractCegarLoop]: Abstraction has has 872 places, 5356 transitions, 161405 flow [2022-12-13 11:53:37,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:37,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:37,466 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:53:37,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 11:53:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:53:37,668 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 11:53:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash -997815280, now seen corresponding path program 16 times [2022-12-13 11:53:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:53:37,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311317522] [2022-12-13 11:53:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:53:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:53:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311317522] [2022-12-13 11:53:38,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311317522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:53:38,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811409360] [2022-12-13 11:53:38,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:53:38,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:53:38,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:53:38,285 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:53:38,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aeeb94ea-9ae9-4f26-9fd7-e58f0567818e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 11:53:38,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:53:38,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:53:38,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:53:38,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:38,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:53:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:40,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811409360] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:53:40,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:53:40,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-12-13 11:53:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148561155] [2022-12-13 11:53:40,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:53:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 11:53:40,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:53:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 11:53:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:53:40,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 239 [2022-12-13 11:53:40,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 5356 transitions, 161405 flow. Second operand has 31 states, 31 states have (on average 99.96774193548387) internal successors, (3099), 31 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:40,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:40,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 239 [2022-12-13 11:53:40,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand