./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/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_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/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_177d8c9b-c06a-4a62-981c-047681969483/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 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- 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 17:53:59,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:53:59,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:53:59,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:53:59,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:53:59,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:53:59,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:53:59,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:53:59,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:53:59,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:53:59,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:53:59,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:53:59,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:53:59,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:53:59,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:53:59,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:53:59,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:53:59,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:53:59,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:53:59,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:53:59,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:53:59,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:53:59,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:53:59,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:53:59,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:53:59,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:53:59,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:53:59,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:53:59,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:53:59,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:53:59,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:53:59,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:53:59,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:53:59,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:53:59,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:53:59,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:53:59,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:53:59,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:53:59,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:53:59,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:53:59,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:53:59,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:53:59,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:53:59,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:53:59,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:53:59,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:53:59,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:53:59,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:53:59,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:53:59,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:53:59,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:53:59,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:53:59,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:53:59,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:53:59,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:53:59,412 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:53:59,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:53:59,412 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:53:59,412 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_177d8c9b-c06a-4a62-981c-047681969483/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2022-12-13 17:53:59,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:53:59,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:53:59,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:53:59,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:53:59,607 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:53:59,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-12-13 17:54:02,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:54:02,408 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:54:02,409 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-12-13 17:54:02,421 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/data/0010695a2/4791b09b644b46fbbedce38c8314eadb/FLAGb307ffba4 [2022-12-13 17:54:02,434 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/data/0010695a2/4791b09b644b46fbbedce38c8314eadb [2022-12-13 17:54:02,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:54:02,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:54:02,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:54:02,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:54:02,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:54:02,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a1ef46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02, skipping insertion in model container [2022-12-13 17:54:02,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:54:02,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:54:02,629 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 17:54:02,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:54:02,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:54:02,735 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_177d8c9b-c06a-4a62-981c-047681969483/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-12-13 17:54:02,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:54:02,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:54:02,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:54:02,752 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:54:02,765 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 17:54:02,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:54:02,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:54:02,790 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_177d8c9b-c06a-4a62-981c-047681969483/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-12-13 17:54:02,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:54:02,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:54:02,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:54:02,815 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:54:02,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02 WrapperNode [2022-12-13 17:54:02,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:54:02,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:54:02,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:54:02,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:54:02,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,849 INFO L138 Inliner]: procedures = 173, calls = 24, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 108 [2022-12-13 17:54:02,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:54:02,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:54:02,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:54:02,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:54:02,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:54:02,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:54:02,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:54:02,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:54:02,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (1/1) ... [2022-12-13 17:54:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:54:02,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:54:02,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:54:02,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d8c9b-c06a-4a62-981c-047681969483/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:54:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:54:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 17:54:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 17:54:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:54:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:54:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:54:02,931 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 17:54:03,015 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:54:03,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:54:03,199 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:54:03,279 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:54:03,279 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:54:03,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:54:03 BoogieIcfgContainer [2022-12-13 17:54:03,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:54:03,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:54:03,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:54:03,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:54:03,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:54:02" (1/3) ... [2022-12-13 17:54:03,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3376e326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:54:03, skipping insertion in model container [2022-12-13 17:54:03,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:02" (2/3) ... [2022-12-13 17:54:03,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3376e326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:54:03, skipping insertion in model container [2022-12-13 17:54:03,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:54:03" (3/3) ... [2022-12-13 17:54:03,288 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs.i [2022-12-13 17:54:03,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:54:03,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-12-13 17:54:03,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:54:03,337 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 17:54:03,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 89 transitions, 183 flow [2022-12-13 17:54:03,399 INFO L130 PetriNetUnfolder]: 8/136 cut-off events. [2022-12-13 17:54:03,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:54:03,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 8/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 307 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2022-12-13 17:54:03,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 89 transitions, 183 flow [2022-12-13 17:54:03,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 183 flow [2022-12-13 17:54:03,409 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:54:03,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 89 transitions, 183 flow [2022-12-13 17:54:03,418 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 89 transitions, 183 flow [2022-12-13 17:54:03,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 89 transitions, 183 flow [2022-12-13 17:54:03,439 INFO L130 PetriNetUnfolder]: 8/136 cut-off events. [2022-12-13 17:54:03,439 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:54:03,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 8/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 307 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2022-12-13 17:54:03,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 2100 [2022-12-13 17:54:04,479 INFO L134 LiptonReduction]: Checked pairs total: 7188 [2022-12-13 17:54:04,479 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-12-13 17:54:04,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:54:04,500 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;@305dd06a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:54:04,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-13 17:54:04,502 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 17:54:04,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:54:04,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:04,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:54:04,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 13628, now seen corresponding path program 1 times [2022-12-13 17:54:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:04,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671096314] [2022-12-13 17:54:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:04,672 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 17:54:04,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:04,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671096314] [2022-12-13 17:54:04,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671096314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:04,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:04,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:54:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342969914] [2022-12-13 17:54:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:04,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:04,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:04,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 151 [2022-12-13 17:54:04,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:04,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:04,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 151 [2022-12-13 17:54:04,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:04,850 INFO L130 PetriNetUnfolder]: 127/359 cut-off events. [2022-12-13 17:54:04,850 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:54:04,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 359 events. 127/359 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1801 event pairs, 72 based on Foata normal form. 24/259 useless extension candidates. Maximal degree in co-relation 587. Up to 189 conditions per place. [2022-12-13 17:54:04,853 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 43 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2022-12-13 17:54:04,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 219 flow [2022-12-13 17:54:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2022-12-13 17:54:04,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5320088300220751 [2022-12-13 17:54:04,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2022-12-13 17:54:04,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2022-12-13 17:54:04,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:04,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2022-12-13 17:54:04,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:04,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:04,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:04,873 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 91 flow. Second operand 3 states and 241 transitions. [2022-12-13 17:54:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 219 flow [2022-12-13 17:54:04,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 219 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:54:04,876 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 113 flow [2022-12-13 17:54:04,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-12-13 17:54:04,881 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-13 17:54:04,881 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 113 flow [2022-12-13 17:54:04,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:04,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:04,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:54:04,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:54:04,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash 13627, now seen corresponding path program 1 times [2022-12-13 17:54:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:04,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544605848] [2022-12-13 17:54:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:04,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:04,949 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 17:54:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544605848] [2022-12-13 17:54:04,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544605848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:04,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:04,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:54:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521676449] [2022-12-13 17:54:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:04,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:04,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 151 [2022-12-13 17:54:04,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:04,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:04,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 151 [2022-12-13 17:54:04,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:05,057 INFO L130 PetriNetUnfolder]: 126/363 cut-off events. [2022-12-13 17:54:05,057 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 17:54:05,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 363 events. 126/363 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1910 event pairs, 78 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 647. Up to 253 conditions per place. [2022-12-13 17:54:05,060 INFO L137 encePairwiseOnDemand]: 146/151 looper letters, 36 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2022-12-13 17:54:05,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 225 flow [2022-12-13 17:54:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2022-12-13 17:54:05,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5099337748344371 [2022-12-13 17:54:05,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2022-12-13 17:54:05,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2022-12-13 17:54:05,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:05,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2022-12-13 17:54:05,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,064 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 113 flow. Second operand 3 states and 231 transitions. [2022-12-13 17:54:05,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 225 flow [2022-12-13 17:54:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:05,066 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 141 flow [2022-12-13 17:54:05,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2022-12-13 17:54:05,066 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-13 17:54:05,067 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 141 flow [2022-12-13 17:54:05,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:05,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:54:05,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:54:05,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash 422878, now seen corresponding path program 1 times [2022-12-13 17:54:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:05,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343756399] [2022-12-13 17:54:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:05,127 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 17:54:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:05,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343756399] [2022-12-13 17:54:05,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343756399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:05,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:05,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643665529] [2022-12-13 17:54:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:05,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:05,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 151 [2022-12-13 17:54:05,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:05,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 151 [2022-12-13 17:54:05,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:05,230 INFO L130 PetriNetUnfolder]: 118/355 cut-off events. [2022-12-13 17:54:05,230 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 17:54:05,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 355 events. 118/355 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1860 event pairs, 70 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 664. Up to 143 conditions per place. [2022-12-13 17:54:05,232 INFO L137 encePairwiseOnDemand]: 143/151 looper letters, 41 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2022-12-13 17:54:05,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 277 flow [2022-12-13 17:54:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 17:54:05,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5231788079470199 [2022-12-13 17:54:05,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 17:54:05,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 17:54:05,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:05,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 17:54:05,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,238 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 141 flow. Second operand 3 states and 237 transitions. [2022-12-13 17:54:05,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 277 flow [2022-12-13 17:54:05,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:05,241 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 191 flow [2022-12-13 17:54:05,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2022-12-13 17:54:05,241 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2022-12-13 17:54:05,242 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 191 flow [2022-12-13 17:54:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:05,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:54:05,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:54:05,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:05,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:05,243 INFO L85 PathProgramCache]: Analyzing trace with hash 422879, now seen corresponding path program 1 times [2022-12-13 17:54:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:05,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971555826] [2022-12-13 17:54:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:05,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:05,341 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 17:54:05,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:05,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971555826] [2022-12-13 17:54:05,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971555826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:05,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:05,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014359656] [2022-12-13 17:54:05,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:05,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:05,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:05,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 151 [2022-12-13 17:54:05,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:05,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 151 [2022-12-13 17:54:05,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:05,433 INFO L130 PetriNetUnfolder]: 109/327 cut-off events. [2022-12-13 17:54:05,433 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-12-13 17:54:05,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 327 events. 109/327 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1663 event pairs, 65 based on Foata normal form. 22/276 useless extension candidates. Maximal degree in co-relation 691. Up to 132 conditions per place. [2022-12-13 17:54:05,436 INFO L137 encePairwiseOnDemand]: 147/151 looper letters, 39 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2022-12-13 17:54:05,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 293 flow [2022-12-13 17:54:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 17:54:05,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5231788079470199 [2022-12-13 17:54:05,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 17:54:05,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 17:54:05,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:05,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 17:54:05,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,441 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 191 flow. Second operand 3 states and 237 transitions. [2022-12-13 17:54:05,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 293 flow [2022-12-13 17:54:05,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:05,444 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 181 flow [2022-12-13 17:54:05,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2022-12-13 17:54:05,445 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-13 17:54:05,445 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 181 flow [2022-12-13 17:54:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:05,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:54:05,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:54:05,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 406264026, now seen corresponding path program 1 times [2022-12-13 17:54:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:05,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074944455] [2022-12-13 17:54:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:05,539 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 17:54:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:05,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074944455] [2022-12-13 17:54:05,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074944455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:05,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:05,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635866047] [2022-12-13 17:54:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:05,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 151 [2022-12-13 17:54:05,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:05,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 151 [2022-12-13 17:54:05,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:05,619 INFO L130 PetriNetUnfolder]: 97/288 cut-off events. [2022-12-13 17:54:05,619 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-12-13 17:54:05,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 288 events. 97/288 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1379 event pairs, 15 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 609. Up to 161 conditions per place. [2022-12-13 17:54:05,621 INFO L137 encePairwiseOnDemand]: 147/151 looper letters, 41 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2022-12-13 17:54:05,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 311 flow [2022-12-13 17:54:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2022-12-13 17:54:05,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5342163355408388 [2022-12-13 17:54:05,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2022-12-13 17:54:05,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2022-12-13 17:54:05,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:05,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2022-12-13 17:54:05,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,625 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 181 flow. Second operand 3 states and 242 transitions. [2022-12-13 17:54:05,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 311 flow [2022-12-13 17:54:05,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:05,627 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 177 flow [2022-12-13 17:54:05,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2022-12-13 17:54:05,628 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-13 17:54:05,628 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 177 flow [2022-12-13 17:54:05,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:05,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:54:05,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:54:05,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:05,630 INFO L85 PathProgramCache]: Analyzing trace with hash 406264025, now seen corresponding path program 1 times [2022-12-13 17:54:05,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:05,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904945544] [2022-12-13 17:54:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:05,678 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 17:54:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:05,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904945544] [2022-12-13 17:54:05,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904945544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:05,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:05,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585152969] [2022-12-13 17:54:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:05,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:05,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:05,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 151 [2022-12-13 17:54:05,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:05,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 151 [2022-12-13 17:54:05,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:05,787 INFO L130 PetriNetUnfolder]: 102/299 cut-off events. [2022-12-13 17:54:05,787 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-13 17:54:05,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 299 events. 102/299 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1429 event pairs, 15 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 637. Up to 135 conditions per place. [2022-12-13 17:54:05,788 INFO L137 encePairwiseOnDemand]: 142/151 looper letters, 43 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2022-12-13 17:54:05,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 337 flow [2022-12-13 17:54:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2022-12-13 17:54:05,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5298013245033113 [2022-12-13 17:54:05,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2022-12-13 17:54:05,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2022-12-13 17:54:05,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:05,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2022-12-13 17:54:05,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,791 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 177 flow. Second operand 3 states and 240 transitions. [2022-12-13 17:54:05,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 337 flow [2022-12-13 17:54:05,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:05,794 INFO L231 Difference]: Finished difference. Result has 46 places, 52 transitions, 241 flow [2022-12-13 17:54:05,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=46, PETRI_TRANSITIONS=52} [2022-12-13 17:54:05,794 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-13 17:54:05,795 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 52 transitions, 241 flow [2022-12-13 17:54:05,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:05,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:05,795 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 17:54:05,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:54:05,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-12-13 17:54:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:05,796 INFO L85 PathProgramCache]: Analyzing trace with hash -290691391, now seen corresponding path program 1 times [2022-12-13 17:54:05,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:05,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343719719] [2022-12-13 17:54:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:05,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:54:05,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:54:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:54:05,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:54:05,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:54:05,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-13 17:54:05,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2022-12-13 17:54:05,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2022-12-13 17:54:05,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2022-12-13 17:54:05,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (13 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 19 remaining) [2022-12-13 17:54:05,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (5 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2022-12-13 17:54:05,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2022-12-13 17:54:05,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:54:05,834 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:05,837 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:54:05,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 17:54:05,862 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 17:54:05,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 111 transitions, 234 flow [2022-12-13 17:54:05,879 INFO L130 PetriNetUnfolder]: 13/207 cut-off events. [2022-12-13 17:54:05,880 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:54:05,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 207 events. 13/207 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 634 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-12-13 17:54:05,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 111 transitions, 234 flow [2022-12-13 17:54:05,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 111 transitions, 234 flow [2022-12-13 17:54:05,881 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:54:05,881 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 111 transitions, 234 flow [2022-12-13 17:54:05,881 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 111 transitions, 234 flow [2022-12-13 17:54:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 111 transitions, 234 flow [2022-12-13 17:54:05,896 INFO L130 PetriNetUnfolder]: 13/207 cut-off events. [2022-12-13 17:54:05,896 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:54:05,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 207 events. 13/207 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 634 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-12-13 17:54:05,898 INFO L119 LiptonReduction]: Number of co-enabled transitions 5124 [2022-12-13 17:54:06,855 INFO L134 LiptonReduction]: Checked pairs total: 19358 [2022-12-13 17:54:06,855 INFO L136 LiptonReduction]: Total number of compositions: 68 [2022-12-13 17:54:06,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:54:06,857 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;@305dd06a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:54:06,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-12-13 17:54:06,858 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 17:54:06,858 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:54:06,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:06,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:54:06,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 20059, now seen corresponding path program 1 times [2022-12-13 17:54:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:06,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695765411] [2022-12-13 17:54:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:06,881 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 17:54:06,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:06,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695765411] [2022-12-13 17:54:06,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695765411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:06,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:06,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:54:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955127335] [2022-12-13 17:54:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:06,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:06,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:06,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 179 [2022-12-13 17:54:06,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:06,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:06,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 179 [2022-12-13 17:54:06,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:07,323 INFO L130 PetriNetUnfolder]: 2234/4240 cut-off events. [2022-12-13 17:54:07,323 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 17:54:07,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7706 conditions, 4240 events. 2234/4240 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 30705 event pairs, 1592 based on Foata normal form. 326/3013 useless extension candidates. Maximal degree in co-relation 1277. Up to 2893 conditions per place. [2022-12-13 17:54:07,352 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 50 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 17:54:07,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 73 transitions, 262 flow [2022-12-13 17:54:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2022-12-13 17:54:07,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5549348230912476 [2022-12-13 17:54:07,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2022-12-13 17:54:07,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2022-12-13 17:54:07,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:07,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2022-12-13 17:54:07,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,358 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 134 flow. Second operand 3 states and 298 transitions. [2022-12-13 17:54:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 73 transitions, 262 flow [2022-12-13 17:54:07,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 260 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 17:54:07,360 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 124 flow [2022-12-13 17:54:07,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2022-12-13 17:54:07,361 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2022-12-13 17:54:07,361 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 124 flow [2022-12-13 17:54:07,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:07,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:54:07,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:54:07,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 20061, now seen corresponding path program 1 times [2022-12-13 17:54:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:07,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665309834] [2022-12-13 17:54:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:07,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:07,391 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 17:54:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:07,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665309834] [2022-12-13 17:54:07,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665309834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:07,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:07,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:54:07,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720864693] [2022-12-13 17:54:07,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:07,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:07,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:07,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:07,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2022-12-13 17:54:07,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:07,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2022-12-13 17:54:07,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:07,836 INFO L130 PetriNetUnfolder]: 2170/4136 cut-off events. [2022-12-13 17:54:07,836 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 17:54:07,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7652 conditions, 4136 events. 2170/4136 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 30038 event pairs, 1119 based on Foata normal form. 0/2677 useless extension candidates. Maximal degree in co-relation 6359. Up to 2062 conditions per place. [2022-12-13 17:54:07,853 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 58 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2022-12-13 17:54:07,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 313 flow [2022-12-13 17:54:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2022-12-13 17:54:07,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5381750465549349 [2022-12-13 17:54:07,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2022-12-13 17:54:07,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2022-12-13 17:54:07,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:07,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2022-12-13 17:54:07,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,856 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 124 flow. Second operand 3 states and 289 transitions. [2022-12-13 17:54:07,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 313 flow [2022-12-13 17:54:07,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 84 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:07,860 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 158 flow [2022-12-13 17:54:07,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2022-12-13 17:54:07,861 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2022-12-13 17:54:07,861 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 158 flow [2022-12-13 17:54:07,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:07,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:54:07,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:54:07,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash 622443, now seen corresponding path program 1 times [2022-12-13 17:54:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:07,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830924376] [2022-12-13 17:54:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:07,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:07,886 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 17:54:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:07,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830924376] [2022-12-13 17:54:07,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830924376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:07,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:07,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:07,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984562600] [2022-12-13 17:54:07,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:07,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:07,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2022-12-13 17:54:07,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:07,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:07,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2022-12-13 17:54:07,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:08,286 INFO L130 PetriNetUnfolder]: 2152/4173 cut-off events. [2022-12-13 17:54:08,286 INFO L131 PetriNetUnfolder]: For 539/544 co-relation queries the response was YES. [2022-12-13 17:54:08,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8341 conditions, 4173 events. 2152/4173 cut-off events. For 539/544 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 31122 event pairs, 821 based on Foata normal form. 0/3014 useless extension candidates. Maximal degree in co-relation 3861. Up to 1707 conditions per place. [2022-12-13 17:54:08,316 INFO L137 encePairwiseOnDemand]: 170/179 looper letters, 56 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2022-12-13 17:54:08,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 358 flow [2022-12-13 17:54:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2022-12-13 17:54:08,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5400372439478585 [2022-12-13 17:54:08,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2022-12-13 17:54:08,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2022-12-13 17:54:08,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:08,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2022-12-13 17:54:08,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,319 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 158 flow. Second operand 3 states and 290 transitions. [2022-12-13 17:54:08,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 358 flow [2022-12-13 17:54:08,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:08,322 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 234 flow [2022-12-13 17:54:08,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2022-12-13 17:54:08,322 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2022-12-13 17:54:08,322 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 234 flow [2022-12-13 17:54:08,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:08,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:54:08,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:54:08,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash 622444, now seen corresponding path program 1 times [2022-12-13 17:54:08,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:08,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672887501] [2022-12-13 17:54:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:08,364 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 17:54:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:08,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672887501] [2022-12-13 17:54:08,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672887501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:08,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:08,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219883496] [2022-12-13 17:54:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:08,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:08,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 179 [2022-12-13 17:54:08,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:08,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 179 [2022-12-13 17:54:08,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:08,711 INFO L130 PetriNetUnfolder]: 1938/3684 cut-off events. [2022-12-13 17:54:08,711 INFO L131 PetriNetUnfolder]: For 1294/1300 co-relation queries the response was YES. [2022-12-13 17:54:08,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8406 conditions, 3684 events. 1938/3684 cut-off events. For 1294/1300 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 26288 event pairs, 753 based on Foata normal form. 234/2957 useless extension candidates. Maximal degree in co-relation 2917. Up to 1712 conditions per place. [2022-12-13 17:54:08,727 INFO L137 encePairwiseOnDemand]: 175/179 looper letters, 59 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2022-12-13 17:54:08,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 400 flow [2022-12-13 17:54:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-12-13 17:54:08,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5456238361266295 [2022-12-13 17:54:08,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-12-13 17:54:08,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-12-13 17:54:08,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:08,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-12-13 17:54:08,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,732 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 234 flow. Second operand 3 states and 293 transitions. [2022-12-13 17:54:08,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 400 flow [2022-12-13 17:54:08,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:08,737 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 218 flow [2022-12-13 17:54:08,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2022-12-13 17:54:08,737 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2022-12-13 17:54:08,737 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 218 flow [2022-12-13 17:54:08,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:08,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:54:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:54:08,738 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash 598132240, now seen corresponding path program 1 times [2022-12-13 17:54:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:08,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549707429] [2022-12-13 17:54:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:08,770 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 17:54:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549707429] [2022-12-13 17:54:08,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549707429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:08,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:08,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098461290] [2022-12-13 17:54:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:08,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:08,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2022-12-13 17:54:08,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:08,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:08,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2022-12-13 17:54:08,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:09,167 INFO L130 PetriNetUnfolder]: 2289/4505 cut-off events. [2022-12-13 17:54:09,167 INFO L131 PetriNetUnfolder]: For 1667/1678 co-relation queries the response was YES. [2022-12-13 17:54:09,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9826 conditions, 4505 events. 2289/4505 cut-off events. For 1667/1678 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 35193 event pairs, 515 based on Foata normal form. 0/3355 useless extension candidates. Maximal degree in co-relation 8283. Up to 1899 conditions per place. [2022-12-13 17:54:09,179 INFO L137 encePairwiseOnDemand]: 169/179 looper letters, 70 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2022-12-13 17:54:09,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 537 flow [2022-12-13 17:54:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2022-12-13 17:54:09,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5512104283054003 [2022-12-13 17:54:09,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2022-12-13 17:54:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2022-12-13 17:54:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2022-12-13 17:54:09,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,182 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 218 flow. Second operand 3 states and 296 transitions. [2022-12-13 17:54:09,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 537 flow [2022-12-13 17:54:09,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:09,184 INFO L231 Difference]: Finished difference. Result has 63 places, 78 transitions, 362 flow [2022-12-13 17:54:09,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=63, PETRI_TRANSITIONS=78} [2022-12-13 17:54:09,184 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2022-12-13 17:54:09,184 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 78 transitions, 362 flow [2022-12-13 17:54:09,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:09,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:54:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:54:09,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash 598132241, now seen corresponding path program 1 times [2022-12-13 17:54:09,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:09,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589145766] [2022-12-13 17:54:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:09,227 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 17:54:09,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:09,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589145766] [2022-12-13 17:54:09,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589145766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:09,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:09,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688877098] [2022-12-13 17:54:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:09,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 179 [2022-12-13 17:54:09,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 78 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:09,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 179 [2022-12-13 17:54:09,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:09,582 INFO L130 PetriNetUnfolder]: 1979/3842 cut-off events. [2022-12-13 17:54:09,582 INFO L131 PetriNetUnfolder]: For 2819/2844 co-relation queries the response was YES. [2022-12-13 17:54:09,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9963 conditions, 3842 events. 1979/3842 cut-off events. For 2819/2844 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28547 event pairs, 463 based on Foata normal form. 306/3317 useless extension candidates. Maximal degree in co-relation 8540. Up to 2306 conditions per place. [2022-12-13 17:54:09,595 INFO L137 encePairwiseOnDemand]: 175/179 looper letters, 76 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2022-12-13 17:54:09,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 103 transitions, 627 flow [2022-12-13 17:54:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-12-13 17:54:09,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567970204841713 [2022-12-13 17:54:09,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-12-13 17:54:09,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-12-13 17:54:09,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:09,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-12-13 17:54:09,597 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 17:54:09,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,598 INFO L175 Difference]: Start difference. First operand has 63 places, 78 transitions, 362 flow. Second operand 3 states and 299 transitions. [2022-12-13 17:54:09,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 103 transitions, 627 flow [2022-12-13 17:54:09,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:09,602 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 344 flow [2022-12-13 17:54:09,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2022-12-13 17:54:09,603 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2022-12-13 17:54:09,603 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 344 flow [2022-12-13 17:54:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:09,603 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:54:09,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:54:09,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1363860145, now seen corresponding path program 1 times [2022-12-13 17:54:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:09,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619688028] [2022-12-13 17:54:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:09,641 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 17:54:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:09,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619688028] [2022-12-13 17:54:09,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619688028] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:09,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:09,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088670688] [2022-12-13 17:54:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:09,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:09,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2022-12-13 17:54:09,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:09,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:09,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2022-12-13 17:54:09,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:10,178 INFO L130 PetriNetUnfolder]: 3641/6618 cut-off events. [2022-12-13 17:54:10,178 INFO L131 PetriNetUnfolder]: For 4766/4801 co-relation queries the response was YES. [2022-12-13 17:54:10,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16687 conditions, 6618 events. 3641/6618 cut-off events. For 4766/4801 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 48054 event pairs, 1828 based on Foata normal form. 477/5930 useless extension candidates. Maximal degree in co-relation 7463. Up to 4708 conditions per place. [2022-12-13 17:54:10,198 INFO L137 encePairwiseOnDemand]: 169/179 looper letters, 114 selfloop transitions, 6 changer transitions 0/132 dead transitions. [2022-12-13 17:54:10,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 132 transitions, 863 flow [2022-12-13 17:54:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2022-12-13 17:54:10,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5549348230912476 [2022-12-13 17:54:10,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2022-12-13 17:54:10,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2022-12-13 17:54:10,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:10,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2022-12-13 17:54:10,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,201 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 344 flow. Second operand 3 states and 298 transitions. [2022-12-13 17:54:10,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 132 transitions, 863 flow [2022-12-13 17:54:10,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 132 transitions, 833 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:10,206 INFO L231 Difference]: Finished difference. Result has 63 places, 82 transitions, 384 flow [2022-12-13 17:54:10,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=63, PETRI_TRANSITIONS=82} [2022-12-13 17:54:10,206 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2022-12-13 17:54:10,207 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 82 transitions, 384 flow [2022-12-13 17:54:10,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:10,207 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:10,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:54:10,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:10,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:10,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1395141255, now seen corresponding path program 1 times [2022-12-13 17:54:10,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:10,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964430455] [2022-12-13 17:54:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:54:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:10,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964430455] [2022-12-13 17:54:10,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964430455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:10,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:10,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285461579] [2022-12-13 17:54:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:10,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:10,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2022-12-13 17:54:10,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 82 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:10,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2022-12-13 17:54:10,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:10,730 INFO L130 PetriNetUnfolder]: 2700/5432 cut-off events. [2022-12-13 17:54:10,730 INFO L131 PetriNetUnfolder]: For 3869/4383 co-relation queries the response was YES. [2022-12-13 17:54:10,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14482 conditions, 5432 events. 2700/5432 cut-off events. For 3869/4383 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 43783 event pairs, 515 based on Foata normal form. 242/4588 useless extension candidates. Maximal degree in co-relation 5710. Up to 2395 conditions per place. [2022-12-13 17:54:10,754 INFO L137 encePairwiseOnDemand]: 169/179 looper letters, 81 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2022-12-13 17:54:10,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 126 transitions, 794 flow [2022-12-13 17:54:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-12-13 17:54:10,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5456238361266295 [2022-12-13 17:54:10,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-12-13 17:54:10,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-12-13 17:54:10,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:10,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-12-13 17:54:10,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,757 INFO L175 Difference]: Start difference. First operand has 63 places, 82 transitions, 384 flow. Second operand 3 states and 293 transitions. [2022-12-13 17:54:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 126 transitions, 794 flow [2022-12-13 17:54:10,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 126 transitions, 782 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:10,762 INFO L231 Difference]: Finished difference. Result has 65 places, 99 transitions, 602 flow [2022-12-13 17:54:10,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=65, PETRI_TRANSITIONS=99} [2022-12-13 17:54:10,762 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2022-12-13 17:54:10,762 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 99 transitions, 602 flow [2022-12-13 17:54:10,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:10,763 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:10,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:54:10,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1395141256, now seen corresponding path program 1 times [2022-12-13 17:54:10,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:10,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515720931] [2022-12-13 17:54:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:10,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:54:10,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:10,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515720931] [2022-12-13 17:54:10,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515720931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:10,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:10,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:10,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17464762] [2022-12-13 17:54:10,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:10,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:10,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:10,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:10,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 179 [2022-12-13 17:54:10,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 99 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:10,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:10,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 179 [2022-12-13 17:54:10,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:11,281 INFO L130 PetriNetUnfolder]: 2380/4825 cut-off events. [2022-12-13 17:54:11,281 INFO L131 PetriNetUnfolder]: For 6178/6615 co-relation queries the response was YES. [2022-12-13 17:54:11,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14487 conditions, 4825 events. 2380/4825 cut-off events. For 6178/6615 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 37974 event pairs, 530 based on Foata normal form. 520/4557 useless extension candidates. Maximal degree in co-relation 5200. Up to 2514 conditions per place. [2022-12-13 17:54:11,296 INFO L137 encePairwiseOnDemand]: 175/179 looper letters, 91 selfloop transitions, 12 changer transitions 0/127 dead transitions. [2022-12-13 17:54:11,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 127 transitions, 946 flow [2022-12-13 17:54:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2022-12-13 17:54:11,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5512104283054003 [2022-12-13 17:54:11,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2022-12-13 17:54:11,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2022-12-13 17:54:11,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:11,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2022-12-13 17:54:11,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:11,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:11,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:11,300 INFO L175 Difference]: Start difference. First operand has 65 places, 99 transitions, 602 flow. Second operand 3 states and 296 transitions. [2022-12-13 17:54:11,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 127 transitions, 946 flow [2022-12-13 17:54:11,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 127 transitions, 904 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:11,305 INFO L231 Difference]: Finished difference. Result has 63 places, 97 transitions, 580 flow [2022-12-13 17:54:11,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=63, PETRI_TRANSITIONS=97} [2022-12-13 17:54:11,305 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2022-12-13 17:54:11,305 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 97 transitions, 580 flow [2022-12-13 17:54:11,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:11,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:11,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:11,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:54:11,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:11,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:11,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1652270107, now seen corresponding path program 1 times [2022-12-13 17:54:11,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:11,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485956932] [2022-12-13 17:54:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:11,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:11,406 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 17:54:11,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:11,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485956932] [2022-12-13 17:54:11,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485956932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:11,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:11,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:54:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627108038] [2022-12-13 17:54:11,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:11,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:54:11,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:11,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:54:11,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:54:11,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 179 [2022-12-13 17:54:11,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 97 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:11,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:11,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 179 [2022-12-13 17:54:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:12,061 INFO L130 PetriNetUnfolder]: 3604/6672 cut-off events. [2022-12-13 17:54:12,061 INFO L131 PetriNetUnfolder]: For 8740/9501 co-relation queries the response was YES. [2022-12-13 17:54:12,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19913 conditions, 6672 events. 3604/6672 cut-off events. For 8740/9501 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 50718 event pairs, 968 based on Foata normal form. 365/5663 useless extension candidates. Maximal degree in co-relation 18686. Up to 4267 conditions per place. [2022-12-13 17:54:12,083 INFO L137 encePairwiseOnDemand]: 168/179 looper letters, 98 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2022-12-13 17:54:12,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 142 transitions, 1065 flow [2022-12-13 17:54:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:54:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:54:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2022-12-13 17:54:12,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43109869646182497 [2022-12-13 17:54:12,085 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2022-12-13 17:54:12,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2022-12-13 17:54:12,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:12,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2022-12-13 17:54:12,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:12,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:12,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:12,088 INFO L175 Difference]: Start difference. First operand has 63 places, 97 transitions, 580 flow. Second operand 6 states and 463 transitions. [2022-12-13 17:54:12,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 142 transitions, 1065 flow [2022-12-13 17:54:12,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 142 transitions, 1025 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:12,092 INFO L231 Difference]: Finished difference. Result has 71 places, 118 transitions, 812 flow [2022-12-13 17:54:12,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=71, PETRI_TRANSITIONS=118} [2022-12-13 17:54:12,092 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 11 predicate places. [2022-12-13 17:54:12,092 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 118 transitions, 812 flow [2022-12-13 17:54:12,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:12,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:12,093 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 17:54:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:54:12,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 17:54:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash 699173434, now seen corresponding path program 1 times [2022-12-13 17:54:12,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:12,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081831002] [2022-12-13 17:54:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:54:12,101 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:54:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:54:12,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:54:12,107 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:54:12,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-12-13 17:54:12,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2022-12-13 17:54:12,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-12-13 17:54:12,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-12-13 17:54:12,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (18 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (10 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2022-12-13 17:54:12,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2022-12-13 17:54:12,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2022-12-13 17:54:12,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2022-12-13 17:54:12,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2022-12-13 17:54:12,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2022-12-13 17:54:12,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-12-13 17:54:12,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:54:12,109 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:12,109 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:54:12,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 17:54:12,133 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 17:54:12,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 287 flow [2022-12-13 17:54:12,153 INFO L130 PetriNetUnfolder]: 18/278 cut-off events. [2022-12-13 17:54:12,153 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 17:54:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 278 events. 18/278 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 958 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-12-13 17:54:12,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 133 transitions, 287 flow [2022-12-13 17:54:12,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 133 transitions, 287 flow [2022-12-13 17:54:12,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:54:12,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 133 transitions, 287 flow [2022-12-13 17:54:12,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 133 transitions, 287 flow [2022-12-13 17:54:12,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 287 flow [2022-12-13 17:54:12,172 INFO L130 PetriNetUnfolder]: 18/278 cut-off events. [2022-12-13 17:54:12,172 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 17:54:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 278 events. 18/278 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 958 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-12-13 17:54:12,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 9072 [2022-12-13 17:54:13,159 INFO L134 LiptonReduction]: Checked pairs total: 40441 [2022-12-13 17:54:13,159 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-12-13 17:54:13,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:54:13,160 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;@305dd06a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:54:13,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 17:54:13,161 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-12-13 17:54:13,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:54:13,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:13,161 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:54:13,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 27449, now seen corresponding path program 1 times [2022-12-13 17:54:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:13,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717829341] [2022-12-13 17:54:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:13,174 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 17:54:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717829341] [2022-12-13 17:54:13,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717829341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:13,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:13,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:54:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991414138] [2022-12-13 17:54:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:13,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2022-12-13 17:54:13,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:13,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:13,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2022-12-13 17:54:13,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:16,893 INFO L130 PetriNetUnfolder]: 38162/59009 cut-off events. [2022-12-13 17:54:16,893 INFO L131 PetriNetUnfolder]: For 1304/1304 co-relation queries the response was YES. [2022-12-13 17:54:16,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112061 conditions, 59009 events. 38162/59009 cut-off events. For 1304/1304 co-relation queries the response was YES. Maximal size of possible extension queue 2418. Compared 490676 event pairs, 19301 based on Foata normal form. 3852/41310 useless extension candidates. Maximal degree in co-relation 8980. Up to 30313 conditions per place. [2022-12-13 17:54:17,173 INFO L137 encePairwiseOnDemand]: 199/209 looper letters, 81 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2022-12-13 17:54:17,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 431 flow [2022-12-13 17:54:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-12-13 17:54:17,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5661881977671451 [2022-12-13 17:54:17,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-12-13 17:54:17,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-12-13 17:54:17,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:17,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-12-13 17:54:17,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:17,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:17,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:17,179 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 173 flow. Second operand 3 states and 355 transitions. [2022-12-13 17:54:17,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 431 flow [2022-12-13 17:54:17,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 423 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 17:54:17,182 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 203 flow [2022-12-13 17:54:17,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2022-12-13 17:54:17,183 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2022-12-13 17:54:17,183 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 203 flow [2022-12-13 17:54:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:17,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:17,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:54:17,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:54:17,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash 27450, now seen corresponding path program 1 times [2022-12-13 17:54:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:17,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120048849] [2022-12-13 17:54:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:17,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:17,212 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 17:54:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:17,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120048849] [2022-12-13 17:54:17,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120048849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:17,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:17,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:54:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959641996] [2022-12-13 17:54:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:17,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:17,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 209 [2022-12-13 17:54:17,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:17,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:17,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 209 [2022-12-13 17:54:17,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:21,345 INFO L130 PetriNetUnfolder]: 35219/55845 cut-off events. [2022-12-13 17:54:21,346 INFO L131 PetriNetUnfolder]: For 9676/9772 co-relation queries the response was YES. [2022-12-13 17:54:21,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113895 conditions, 55845 events. 35219/55845 cut-off events. For 9676/9772 co-relation queries the response was YES. Maximal size of possible extension queue 2297. Compared 472472 event pairs, 24707 based on Foata normal form. 0/37222 useless extension candidates. Maximal degree in co-relation 51028. Up to 40811 conditions per place. [2022-12-13 17:54:21,649 INFO L137 encePairwiseOnDemand]: 206/209 looper letters, 76 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-12-13 17:54:21,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 419 flow [2022-12-13 17:54:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 17:54:21,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629984051036683 [2022-12-13 17:54:21,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 17:54:21,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 17:54:21,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:21,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 17:54:21,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:21,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:21,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:21,654 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 203 flow. Second operand 3 states and 353 transitions. [2022-12-13 17:54:21,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 419 flow [2022-12-13 17:54:21,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:21,713 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 193 flow [2022-12-13 17:54:21,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2022-12-13 17:54:21,713 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2022-12-13 17:54:21,713 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 193 flow [2022-12-13 17:54:21,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:21,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:21,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:54:21,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:54:21,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:21,714 INFO L85 PathProgramCache]: Analyzing trace with hash 851765, now seen corresponding path program 1 times [2022-12-13 17:54:21,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:21,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592354004] [2022-12-13 17:54:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:21,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:21,736 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 17:54:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592354004] [2022-12-13 17:54:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592354004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:21,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:21,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706997591] [2022-12-13 17:54:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:21,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:21,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:21,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 209 [2022-12-13 17:54:21,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:21,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:21,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 209 [2022-12-13 17:54:21,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:25,448 INFO L130 PetriNetUnfolder]: 36633/57679 cut-off events. [2022-12-13 17:54:25,448 INFO L131 PetriNetUnfolder]: For 4367/4423 co-relation queries the response was YES. [2022-12-13 17:54:25,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115959 conditions, 57679 events. 36633/57679 cut-off events. For 4367/4423 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 489209 event pairs, 14925 based on Foata normal form. 0/40224 useless extension candidates. Maximal degree in co-relation 99190. Up to 26283 conditions per place. [2022-12-13 17:54:25,687 INFO L137 encePairwiseOnDemand]: 199/209 looper letters, 77 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2022-12-13 17:54:25,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 461 flow [2022-12-13 17:54:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2022-12-13 17:54:25,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5534290271132376 [2022-12-13 17:54:25,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2022-12-13 17:54:25,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2022-12-13 17:54:25,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:25,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2022-12-13 17:54:25,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:25,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:25,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:25,691 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 193 flow. Second operand 3 states and 347 transitions. [2022-12-13 17:54:25,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 461 flow [2022-12-13 17:54:25,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:25,725 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 295 flow [2022-12-13 17:54:25,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2022-12-13 17:54:25,725 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 17:54:25,725 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 295 flow [2022-12-13 17:54:25,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:25,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:25,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:54:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:54:25,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash 851766, now seen corresponding path program 1 times [2022-12-13 17:54:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22515181] [2022-12-13 17:54:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:25,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:25,755 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 17:54:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22515181] [2022-12-13 17:54:25,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22515181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:25,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:25,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44230449] [2022-12-13 17:54:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:25,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:25,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 209 [2022-12-13 17:54:25,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:25,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:25,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 209 [2022-12-13 17:54:25,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:30,070 INFO L130 PetriNetUnfolder]: 32736/50977 cut-off events. [2022-12-13 17:54:30,070 INFO L131 PetriNetUnfolder]: For 17104/17216 co-relation queries the response was YES. [2022-12-13 17:54:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117323 conditions, 50977 events. 32736/50977 cut-off events. For 17104/17216 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 415775 event pairs, 12508 based on Foata normal form. 2632/39412 useless extension candidates. Maximal degree in co-relation 32019. Up to 25761 conditions per place. [2022-12-13 17:54:30,333 INFO L137 encePairwiseOnDemand]: 205/209 looper letters, 83 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2022-12-13 17:54:30,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 533 flow [2022-12-13 17:54:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 17:54:30,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5629984051036683 [2022-12-13 17:54:30,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 17:54:30,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 17:54:30,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:30,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 17:54:30,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:30,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:30,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:30,337 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 295 flow. Second operand 3 states and 353 transitions. [2022-12-13 17:54:30,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 533 flow [2022-12-13 17:54:30,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 509 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:30,429 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 275 flow [2022-12-13 17:54:30,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2022-12-13 17:54:30,429 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2022-12-13 17:54:30,429 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 275 flow [2022-12-13 17:54:30,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:30,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:30,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:54:30,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:54:30,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 818448976, now seen corresponding path program 1 times [2022-12-13 17:54:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:30,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70364353] [2022-12-13 17:54:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:30,449 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 17:54:30,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:30,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70364353] [2022-12-13 17:54:30,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70364353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:30,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:30,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:30,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822658829] [2022-12-13 17:54:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:30,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:30,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:30,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-12-13 17:54:30,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:30,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:30,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-12-13 17:54:30,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:34,792 INFO L130 PetriNetUnfolder]: 41890/68103 cut-off events. [2022-12-13 17:54:34,792 INFO L131 PetriNetUnfolder]: For 24830/25058 co-relation queries the response was YES. [2022-12-13 17:54:34,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149604 conditions, 68103 events. 41890/68103 cut-off events. For 24830/25058 co-relation queries the response was YES. Maximal size of possible extension queue 3397. Compared 630886 event pairs, 12694 based on Foata normal form. 0/47880 useless extension candidates. Maximal degree in co-relation 142899. Up to 30077 conditions per place. [2022-12-13 17:54:35,104 INFO L137 encePairwiseOnDemand]: 198/209 looper letters, 95 selfloop transitions, 20 changer transitions 0/138 dead transitions. [2022-12-13 17:54:35,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 138 transitions, 715 flow [2022-12-13 17:54:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-12-13 17:54:35,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5645933014354066 [2022-12-13 17:54:35,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-12-13 17:54:35,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-12-13 17:54:35,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:35,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-12-13 17:54:35,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:35,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:35,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:35,109 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 275 flow. Second operand 3 states and 354 transitions. [2022-12-13 17:54:35,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 138 transitions, 715 flow [2022-12-13 17:54:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 138 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:35,126 INFO L231 Difference]: Finished difference. Result has 79 places, 102 transitions, 487 flow [2022-12-13 17:54:35,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=79, PETRI_TRANSITIONS=102} [2022-12-13 17:54:35,126 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 17:54:35,126 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 102 transitions, 487 flow [2022-12-13 17:54:35,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:35,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:35,127 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:54:35,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:54:35,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash 818448977, now seen corresponding path program 1 times [2022-12-13 17:54:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:35,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512949241] [2022-12-13 17:54:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:35,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:35,162 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 17:54:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512949241] [2022-12-13 17:54:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512949241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:35,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445668607] [2022-12-13 17:54:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:35,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2022-12-13 17:54:35,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 102 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:35,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:35,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2022-12-13 17:54:35,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:38,942 INFO L130 PetriNetUnfolder]: 35853/56897 cut-off events. [2022-12-13 17:54:38,942 INFO L131 PetriNetUnfolder]: For 42710/43138 co-relation queries the response was YES. [2022-12-13 17:54:39,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146715 conditions, 56897 events. 35853/56897 cut-off events. For 42710/43138 co-relation queries the response was YES. Maximal size of possible extension queue 2835. Compared 491681 event pairs, 10173 based on Foata normal form. 3695/45720 useless extension candidates. Maximal degree in co-relation 142133. Up to 37003 conditions per place. [2022-12-13 17:54:39,246 INFO L137 encePairwiseOnDemand]: 205/209 looper letters, 112 selfloop transitions, 9 changer transitions 0/144 dead transitions. [2022-12-13 17:54:39,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 144 transitions, 907 flow [2022-12-13 17:54:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-12-13 17:54:39,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5741626794258373 [2022-12-13 17:54:39,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-12-13 17:54:39,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-12-13 17:54:39,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:39,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-12-13 17:54:39,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:39,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:39,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:39,252 INFO L175 Difference]: Start difference. First operand has 79 places, 102 transitions, 487 flow. Second operand 3 states and 360 transitions. [2022-12-13 17:54:39,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 144 transitions, 907 flow [2022-12-13 17:54:39,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 867 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:39,333 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 461 flow [2022-12-13 17:54:39,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2022-12-13 17:54:39,333 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2022-12-13 17:54:39,333 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 461 flow [2022-12-13 17:54:39,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:39,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:39,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:54:39,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 17:54:39,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash -394143128, now seen corresponding path program 1 times [2022-12-13 17:54:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:39,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105084520] [2022-12-13 17:54:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:39,368 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 17:54:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:39,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105084520] [2022-12-13 17:54:39,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105084520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:39,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:39,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:39,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686970586] [2022-12-13 17:54:39,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:39,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:39,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:39,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:39,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 209 [2022-12-13 17:54:39,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:39,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:39,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 209 [2022-12-13 17:54:39,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:48,215 INFO L130 PetriNetUnfolder]: 88767/133831 cut-off events. [2022-12-13 17:54:48,215 INFO L131 PetriNetUnfolder]: For 93760/94688 co-relation queries the response was YES. [2022-12-13 17:54:48,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333399 conditions, 133831 events. 88767/133831 cut-off events. For 93760/94688 co-relation queries the response was YES. Maximal size of possible extension queue 4635. Compared 1117849 event pairs, 42492 based on Foata normal form. 6985/113412 useless extension candidates. Maximal degree in co-relation 156939. Up to 91858 conditions per place. [2022-12-13 17:54:48,825 INFO L137 encePairwiseOnDemand]: 196/209 looper letters, 157 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2022-12-13 17:54:48,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 179 transitions, 1199 flow [2022-12-13 17:54:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-12-13 17:54:48,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5645933014354066 [2022-12-13 17:54:48,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-12-13 17:54:48,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-12-13 17:54:48,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:48,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-12-13 17:54:48,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,831 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 461 flow. Second operand 3 states and 354 transitions. [2022-12-13 17:54:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 179 transitions, 1199 flow [2022-12-13 17:54:48,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 179 transitions, 1163 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:48,917 INFO L231 Difference]: Finished difference. Result has 79 places, 108 transitions, 517 flow [2022-12-13 17:54:48,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=79, PETRI_TRANSITIONS=108} [2022-12-13 17:54:48,918 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 17:54:48,918 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 108 transitions, 517 flow [2022-12-13 17:54:48,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:48,918 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:48,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 17:54:48,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:48,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2075368217, now seen corresponding path program 1 times [2022-12-13 17:54:48,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:48,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797155847] [2022-12-13 17:54:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:48,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:54:48,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:48,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797155847] [2022-12-13 17:54:48,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797155847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:48,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:48,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:48,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26374362] [2022-12-13 17:54:48,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:48,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:48,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:48,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:48,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2022-12-13 17:54:48,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 108 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:48,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:48,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2022-12-13 17:54:48,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:54:54,311 INFO L130 PetriNetUnfolder]: 48794/79388 cut-off events. [2022-12-13 17:54:54,311 INFO L131 PetriNetUnfolder]: For 64533/72294 co-relation queries the response was YES. [2022-12-13 17:54:54,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212035 conditions, 79388 events. 48794/79388 cut-off events. For 64533/72294 co-relation queries the response was YES. Maximal size of possible extension queue 3870. Compared 736085 event pairs, 10774 based on Foata normal form. 2664/65589 useless extension candidates. Maximal degree in co-relation 77543. Up to 45424 conditions per place. [2022-12-13 17:54:54,771 INFO L137 encePairwiseOnDemand]: 205/209 looper letters, 122 selfloop transitions, 9 changer transitions 0/161 dead transitions. [2022-12-13 17:54:54,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 161 transitions, 1058 flow [2022-12-13 17:54:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:54:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:54:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-12-13 17:54:54,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5677830940988836 [2022-12-13 17:54:54,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-12-13 17:54:54,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-12-13 17:54:54,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:54:54,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-12-13 17:54:54,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:54,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:54,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:54,775 INFO L175 Difference]: Start difference. First operand has 79 places, 108 transitions, 517 flow. Second operand 3 states and 356 transitions. [2022-12-13 17:54:54,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 161 transitions, 1058 flow [2022-12-13 17:54:54,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 161 transitions, 1042 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:54:54,804 INFO L231 Difference]: Finished difference. Result has 77 places, 106 transitions, 515 flow [2022-12-13 17:54:54,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=77, PETRI_TRANSITIONS=106} [2022-12-13 17:54:54,805 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2022-12-13 17:54:54,805 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 106 transitions, 515 flow [2022-12-13 17:54:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:54,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:54:54,805 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 17:54:54,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:54:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2075368216, now seen corresponding path program 1 times [2022-12-13 17:54:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:54,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311654809] [2022-12-13 17:54:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:54,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:54:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:54:54,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:54,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311654809] [2022-12-13 17:54:54,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311654809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:54:54,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:54:54,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:54:54,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580276430] [2022-12-13 17:54:54,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:54:54,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:54:54,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:54:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:54:54,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:54:54,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-12-13 17:54:54,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 106 transitions, 515 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:54:54,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:54:54,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-12-13 17:54:54,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:55:01,880 INFO L130 PetriNetUnfolder]: 65432/105997 cut-off events. [2022-12-13 17:55:01,880 INFO L131 PetriNetUnfolder]: For 85142/94349 co-relation queries the response was YES. [2022-12-13 17:55:02,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278320 conditions, 105997 events. 65432/105997 cut-off events. For 85142/94349 co-relation queries the response was YES. Maximal size of possible extension queue 5179. Compared 1010047 event pairs, 17594 based on Foata normal form. 4031/87897 useless extension candidates. Maximal degree in co-relation 118559. Up to 51334 conditions per place. [2022-12-13 17:55:02,618 INFO L137 encePairwiseOnDemand]: 198/209 looper letters, 111 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2022-12-13 17:55:02,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 174 transitions, 1172 flow [2022-12-13 17:55:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:55:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:55:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-12-13 17:55:02,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5566188197767146 [2022-12-13 17:55:02,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-12-13 17:55:02,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-12-13 17:55:02,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:55:02,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-12-13 17:55:02,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:02,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:02,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:02,622 INFO L175 Difference]: Start difference. First operand has 77 places, 106 transitions, 515 flow. Second operand 3 states and 349 transitions. [2022-12-13 17:55:02,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 174 transitions, 1172 flow [2022-12-13 17:55:02,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 174 transitions, 1140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:55:02,641 INFO L231 Difference]: Finished difference. Result has 79 places, 138 transitions, 931 flow [2022-12-13 17:55:02,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=931, PETRI_PLACES=79, PETRI_TRANSITIONS=138} [2022-12-13 17:55:02,641 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2022-12-13 17:55:02,642 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 138 transitions, 931 flow [2022-12-13 17:55:02,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:02,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:55:02,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:55:02,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 17:55:02,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:55:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:55:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash 462283336, now seen corresponding path program 1 times [2022-12-13 17:55:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:55:02,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200589306] [2022-12-13 17:55:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:55:02,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:55:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:02,731 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 17:55:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:55:02,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200589306] [2022-12-13 17:55:02,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200589306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:55:02,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:55:02,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:55:02,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152691523] [2022-12-13 17:55:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:55:02,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:55:02,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:55:02,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:55:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:55:02,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 209 [2022-12-13 17:55:02,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 138 transitions, 931 flow. Second operand has 6 states, 6 states have (on average 78.33333333333333) internal successors, (470), 6 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:02,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:55:02,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 209 [2022-12-13 17:55:02,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:55:12,700 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][77], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 18#L727true, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 174#true, 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:12,701 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][64], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 18#L727true, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, 174#true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 58#L719-3true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:12,701 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,701 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([785] L718-->ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_68 4294967296) 1)) InVars {~c~0=v_~c~0_68} OutVars{~c~0=v_~c~0_68} AuxVars[] AssignedVars[][83], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 114#thr1EXITtrue, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 174#true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 124#ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:12,834 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][64], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 114#thr1EXITtrue, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 174#true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 180#true, 12#thr1EXITtrue, 58#L719-3true, 92#L718true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:12,834 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:12,834 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:55:13,296 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([774] L719-->L716-2: Formula: (and (= v_~s~0_78 (+ v_~s~0_79 1)) (= |v_thr1Thread3of3ForFork0_#res#1.base_5| 0) (= |v_thr1Thread3of3ForFork0_#res#1.offset_5| 0)) InVars {~s~0=v_~s~0_79} OutVars{thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_5|, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_5|, thr1Thread3of3ForFork0_#t~post5#1=|v_thr1Thread3of3ForFork0_#t~post5#1_5|, ~s~0=v_~s~0_78} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_#res#1.base, thr1Thread3of3ForFork0_#t~post5#1, ~s~0][107], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 114#thr1EXITtrue, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 52#L716-2true, 174#true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 61#main_returnLabel#1true, 180#true, 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:13,297 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 17:55:13,297 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:55:13,297 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:55:13,297 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([774] L719-->L716-2: Formula: (and (= v_~s~0_78 (+ v_~s~0_79 1)) (= |v_thr1Thread3of3ForFork0_#res#1.base_5| 0) (= |v_thr1Thread3of3ForFork0_#res#1.offset_5| 0)) InVars {~s~0=v_~s~0_79} OutVars{thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_5|, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_5|, thr1Thread3of3ForFork0_#t~post5#1=|v_thr1Thread3of3ForFork0_#t~post5#1_5|, ~s~0=v_~s~0_78} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_#res#1.base, thr1Thread3of3ForFork0_#t~post5#1, ~s~0][107], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 114#thr1EXITtrue, 33#ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAKtrue, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 52#L716-2true, 174#true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 180#true, 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:13,392 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([774] L719-->L716-2: Formula: (and (= v_~s~0_78 (+ v_~s~0_79 1)) (= |v_thr1Thread3of3ForFork0_#res#1.base_5| 0) (= |v_thr1Thread3of3ForFork0_#res#1.offset_5| 0)) InVars {~s~0=v_~s~0_79} OutVars{thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_5|, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_5|, thr1Thread3of3ForFork0_#t~post5#1=|v_thr1Thread3of3ForFork0_#t~post5#1_5|, ~s~0=v_~s~0_78} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_#res#1.base, thr1Thread3of3ForFork0_#t~post5#1, ~s~0][181], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 114#thr1EXITtrue, thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), 62#L722true, Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 52#L716-2true, 174#true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:13,392 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,392 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2022-12-13 17:55:13,445 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([774] L719-->L716-2: Formula: (and (= v_~s~0_78 (+ v_~s~0_79 1)) (= |v_thr1Thread3of3ForFork0_#res#1.base_5| 0) (= |v_thr1Thread3of3ForFork0_#res#1.offset_5| 0)) InVars {~s~0=v_~s~0_79} OutVars{thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_5|, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_5|, thr1Thread3of3ForFork0_#t~post5#1=|v_thr1Thread3of3ForFork0_#t~post5#1_5|, ~s~0=v_~s~0_78} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_#res#1.base, thr1Thread3of3ForFork0_#t~post5#1, ~s~0][181], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 114#thr1EXITtrue, thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 174#true, 52#L716-2true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:13,446 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2022-12-13 17:55:13,446 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 17:55:13,446 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 17:55:13,446 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2022-12-13 17:55:13,482 INFO L130 PetriNetUnfolder]: 94538/147444 cut-off events. [2022-12-13 17:55:13,482 INFO L131 PetriNetUnfolder]: For 212006/227574 co-relation queries the response was YES. [2022-12-13 17:55:13,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429169 conditions, 147444 events. 94538/147444 cut-off events. For 212006/227574 co-relation queries the response was YES. Maximal size of possible extension queue 6736. Compared 1362840 event pairs, 37055 based on Foata normal form. 6665/122176 useless extension candidates. Maximal degree in co-relation 427891. Up to 101145 conditions per place. [2022-12-13 17:55:14,330 INFO L137 encePairwiseOnDemand]: 196/209 looper letters, 142 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2022-12-13 17:55:14,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 200 transitions, 1603 flow [2022-12-13 17:55:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:55:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:55:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2022-12-13 17:55:14,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44178628389154706 [2022-12-13 17:55:14,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 554 transitions. [2022-12-13 17:55:14,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 554 transitions. [2022-12-13 17:55:14,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:55:14,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 554 transitions. [2022-12-13 17:55:14,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:14,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:14,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:14,336 INFO L175 Difference]: Start difference. First operand has 79 places, 138 transitions, 931 flow. Second operand 6 states and 554 transitions. [2022-12-13 17:55:14,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 200 transitions, 1603 flow [2022-12-13 17:55:14,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 200 transitions, 1509 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:55:14,501 INFO L231 Difference]: Finished difference. Result has 87 places, 167 transitions, 1209 flow [2022-12-13 17:55:14,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1209, PETRI_PLACES=87, PETRI_TRANSITIONS=167} [2022-12-13 17:55:14,501 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2022-12-13 17:55:14,501 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 167 transitions, 1209 flow [2022-12-13 17:55:14,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.33333333333333) internal successors, (470), 6 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:14,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:55:14,502 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:55:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 17:55:14,502 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:55:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:55:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash 804713784, now seen corresponding path program 1 times [2022-12-13 17:55:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:55:14,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958754930] [2022-12-13 17:55:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:55:14,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:55:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 17:55:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:55:14,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958754930] [2022-12-13 17:55:14,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958754930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:55:14,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:55:14,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:55:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550492271] [2022-12-13 17:55:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:55:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:55:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:55:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:55:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:55:14,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 209 [2022-12-13 17:55:14,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 167 transitions, 1209 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:14,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:55:14,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 209 [2022-12-13 17:55:14,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:55:29,010 INFO L130 PetriNetUnfolder]: 115212/183642 cut-off events. [2022-12-13 17:55:29,010 INFO L131 PetriNetUnfolder]: For 366659/389816 co-relation queries the response was YES. [2022-12-13 17:55:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574177 conditions, 183642 events. 115212/183642 cut-off events. For 366659/389816 co-relation queries the response was YES. Maximal size of possible extension queue 8967. Compared 1806370 event pairs, 25556 based on Foata normal form. 9815/156601 useless extension candidates. Maximal degree in co-relation 510930. Up to 92182 conditions per place. [2022-12-13 17:55:30,402 INFO L137 encePairwiseOnDemand]: 198/209 looper letters, 168 selfloop transitions, 73 changer transitions 0/271 dead transitions. [2022-12-13 17:55:30,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 271 transitions, 2521 flow [2022-12-13 17:55:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:55:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:55:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 17:55:30,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5550239234449761 [2022-12-13 17:55:30,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 17:55:30,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 17:55:30,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:55:30,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 17:55:30,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:30,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:30,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:30,407 INFO L175 Difference]: Start difference. First operand has 87 places, 167 transitions, 1209 flow. Second operand 3 states and 348 transitions. [2022-12-13 17:55:30,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 271 transitions, 2521 flow [2022-12-13 17:55:31,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 271 transitions, 2417 flow, removed 52 selfloop flow, removed 0 redundant places. [2022-12-13 17:55:31,069 INFO L231 Difference]: Finished difference. Result has 91 places, 230 transitions, 2189 flow [2022-12-13 17:55:31,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2189, PETRI_PLACES=91, PETRI_TRANSITIONS=230} [2022-12-13 17:55:31,069 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2022-12-13 17:55:31,070 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 230 transitions, 2189 flow [2022-12-13 17:55:31,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:31,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:55:31,070 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:55:31,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 17:55:31,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:55:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:55:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash 804713785, now seen corresponding path program 1 times [2022-12-13 17:55:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:55:31,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332876231] [2022-12-13 17:55:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:55:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:55:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 17:55:31,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:55:31,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332876231] [2022-12-13 17:55:31,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332876231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:55:31,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:55:31,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:55:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946339996] [2022-12-13 17:55:31,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:55:31,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:55:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:55:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:55:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:55:31,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2022-12-13 17:55:31,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 230 transitions, 2189 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:31,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:55:31,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2022-12-13 17:55:31,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:55:44,430 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][56], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), 192#true, Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 61#main_returnLabel#1true, 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:44,430 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 17:55:44,430 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:55:44,430 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:55:44,431 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:55:44,923 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][82], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 192#true, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 61#main_returnLabel#1true, 180#true, 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)]) [2022-12-13 17:55:44,924 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is not cut-off event [2022-12-13 17:55:44,924 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is not cut-off event [2022-12-13 17:55:44,924 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is not cut-off event [2022-12-13 17:55:44,924 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is not cut-off event [2022-12-13 17:55:45,155 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][56], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), 192#true, Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 180#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:55:45,155 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 17:55:45,155 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:55:45,155 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:55:45,155 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:55:45,277 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][82], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), 192#true, Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 180#true, 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)]) [2022-12-13 17:55:45,277 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is not cut-off event [2022-12-13 17:55:45,277 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2022-12-13 17:55:45,277 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2022-12-13 17:55:45,277 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is not cut-off event [2022-12-13 17:55:45,394 INFO L130 PetriNetUnfolder]: 102078/163500 cut-off events. [2022-12-13 17:55:45,394 INFO L131 PetriNetUnfolder]: For 465653/486732 co-relation queries the response was YES. [2022-12-13 17:55:45,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572594 conditions, 163500 events. 102078/163500 cut-off events. For 465653/486732 co-relation queries the response was YES. Maximal size of possible extension queue 7870. Compared 1592374 event pairs, 23296 based on Foata normal form. 16376/152641 useless extension candidates. Maximal degree in co-relation 509133. Up to 92944 conditions per place. [2022-12-13 17:55:46,633 INFO L137 encePairwiseOnDemand]: 205/209 looper letters, 232 selfloop transitions, 38 changer transitions 0/300 dead transitions. [2022-12-13 17:55:46,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 300 transitions, 3295 flow [2022-12-13 17:55:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:55:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:55:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-12-13 17:55:46,635 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5645933014354066 [2022-12-13 17:55:46,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-12-13 17:55:46,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-12-13 17:55:46,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:55:46,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-12-13 17:55:46,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:46,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:46,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:46,637 INFO L175 Difference]: Start difference. First operand has 91 places, 230 transitions, 2189 flow. Second operand 3 states and 354 transitions. [2022-12-13 17:55:46,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 300 transitions, 3295 flow [2022-12-13 17:55:48,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 300 transitions, 3145 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 17:55:48,739 INFO L231 Difference]: Finished difference. Result has 89 places, 228 transitions, 2111 flow [2022-12-13 17:55:48,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2111, PETRI_PLACES=89, PETRI_TRANSITIONS=228} [2022-12-13 17:55:48,739 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2022-12-13 17:55:48,739 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 228 transitions, 2111 flow [2022-12-13 17:55:48,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:48,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:55:48,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:55:48,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 17:55:48,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:55:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:55:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 62784274, now seen corresponding path program 1 times [2022-12-13 17:55:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:55:48,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35873322] [2022-12-13 17:55:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:55:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:55:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:55:48,782 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 17:55:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:55:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35873322] [2022-12-13 17:55:48,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35873322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:55:48,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:55:48,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:55:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234026983] [2022-12-13 17:55:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:55:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:55:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:55:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:55:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:55:48,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 209 [2022-12-13 17:55:48,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 228 transitions, 2111 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:55:48,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:55:48,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 209 [2022-12-13 17:55:48,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:56:02,196 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 52#L716-2true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 200#(and (= (select |#length| |thr1Thread3of3ForFork0_~#l~0#1.base|) 4) (= |thr1Thread3of3ForFork0_~#l~0#1.offset| 0)), 61#main_returnLabel#1true, 180#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 89#L719true, 202#true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)]) [2022-12-13 17:56:02,196 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, 52#L716-2true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 200#(and (= (select |#length| |thr1Thread3of3ForFork0_~#l~0#1.base|) 4) (= |thr1Thread3of3ForFork0_~#l~0#1.offset| 0)), 61#main_returnLabel#1true, 180#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)]) [2022-12-13 17:56:02,196 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,196 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,197 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 18#L727true, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 89#L719true, 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:02,197 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,197 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,197 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,197 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,197 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, 18#L727true, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:02,197 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,197 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,198 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,198 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2022-12-13 17:56:02,759 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 61#main_returnLabel#1true, 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, 89#L719true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:02,759 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,759 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,759 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,759 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,760 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 61#main_returnLabel#1true, 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:02,760 INFO L383 tUnfolder$Statistics]: this new event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,760 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,760 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:56:02,760 INFO L386 tUnfolder$Statistics]: existing Event has 41 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 52#L716-2true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 200#(and (= (select |#length| |thr1Thread3of3ForFork0_~#l~0#1.base|) 4) (= |thr1Thread3of3ForFork0_~#l~0#1.offset| 0)), Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 180#true, 202#true, 89#L719true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)]) [2022-12-13 17:56:03,175 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, 52#L716-2true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 200#(and (= (select |#length| |thr1Thread3of3ForFork0_~#l~0#1.base|) 4) (= |thr1Thread3of3ForFork0_~#l~0#1.offset| 0)), 58#L719-3true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 180#true, 202#true, Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1), Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)]) [2022-12-13 17:56:03,175 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,175 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 62#L722true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, 89#L719true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:03,176 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 62#L722true, 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 180#true, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:03,176 INFO L383 tUnfolder$Statistics]: this new event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,176 INFO L386 tUnfolder$Statistics]: existing Event has 42 ancestors and is cut-off event [2022-12-13 17:56:03,402 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), 89#L719true, Black: 180#true, 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:03,402 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,402 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,402 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,402 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 180#true, 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:03,403 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([792] L718-->thr1Err4ASSERT_VIOLATIONMEMORY_LEAK: Formula: (not (= (mod v_~c~0_78 4294967296) 1)) InVars {~c~0=v_~c~0_78} OutVars{~c~0=v_~c~0_78} AuxVars[] AssignedVars[][119], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), 25#thr1Err4ASSERT_VIOLATIONMEMORY_LEAKtrue, Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 180#true, 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, 89#L719true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:03,403 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([744] L719-->L719-3: Formula: (= v_~s~0_22 (+ v_~s~0_23 1)) InVars {~s~0=v_~s~0_23} OutVars{thr1Thread2of3ForFork0_#t~post5#1=|v_thr1Thread2of3ForFork0_#t~post5#1_1|, ~s~0=v_~s~0_22} AuxVars[] AssignedVars[thr1Thread2of3ForFork0_#t~post5#1, ~s~0][199], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 194#(= (select |#valid| |thr1Thread3of3ForFork0_~#l~0#1.base|) 1), thr1Thread3of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, Black: 166#(= ~c~0 1), Black: 136#(= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1), 118#L718true, Black: 176#(= (select |#valid| |thr1Thread2of3ForFork0_~#l~0#1.base|) 1), Black: 146#(= (select |#valid| |ULTIMATE.start_thr1_~#l~0#1.base|) 1), 180#true, 12#thr1EXITtrue, 198#true, Black: 182#(and (= (select |#valid| |ULTIMATE.start_main_~#t~1#1.base|) 1) (= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 58#L719-3true, Black: 183#(and (not (= |ULTIMATE.start_main_~#t~1#1.base| |ULTIMATE.start_thr1_~#l~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_thr1_~#l~0#1.base| 0))), Black: 185#(= |ULTIMATE.start_main_old_#valid#1| |#valid|), 202#true, Black: 184#(= (store |#valid| |ULTIMATE.start_main_~#t~1#1.base| 0) |ULTIMATE.start_main_old_#valid#1|), Black: 156#(= (select |#valid| |thr1Thread1of3ForFork0_~#l~0#1.base|) 1)]) [2022-12-13 17:56:03,403 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,403 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,404 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2022-12-13 17:56:03,657 INFO L130 PetriNetUnfolder]: 105434/169030 cut-off events. [2022-12-13 17:56:03,657 INFO L131 PetriNetUnfolder]: For 433312/454962 co-relation queries the response was YES. [2022-12-13 17:56:04,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578926 conditions, 169030 events. 105434/169030 cut-off events. For 433312/454962 co-relation queries the response was YES. Maximal size of possible extension queue 8016. Compared 1650687 event pairs, 29565 based on Foata normal form. 9166/147861 useless extension candidates. Maximal degree in co-relation 576507. Up to 105493 conditions per place. [2022-12-13 17:56:04,947 INFO L137 encePairwiseOnDemand]: 199/209 looper letters, 219 selfloop transitions, 96 changer transitions 0/344 dead transitions. [2022-12-13 17:56:04,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 344 transitions, 3548 flow [2022-12-13 17:56:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:56:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:56:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-12-13 17:56:04,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5358851674641149 [2022-12-13 17:56:04,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-12-13 17:56:04,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-12-13 17:56:04,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:56:04,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-12-13 17:56:04,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:04,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:04,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:04,952 INFO L175 Difference]: Start difference. First operand has 89 places, 228 transitions, 2111 flow. Second operand 4 states and 448 transitions. [2022-12-13 17:56:04,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 344 transitions, 3548 flow [2022-12-13 17:56:05,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 344 transitions, 3444 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:56:05,227 INFO L231 Difference]: Finished difference. Result has 92 places, 269 transitions, 2909 flow [2022-12-13 17:56:05,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2909, PETRI_PLACES=92, PETRI_TRANSITIONS=269} [2022-12-13 17:56:05,228 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 16 predicate places. [2022-12-13 17:56:05,228 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 269 transitions, 2909 flow [2022-12-13 17:56:05,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:05,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:56:05,228 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 17:56:05,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 17:56:05,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-12-13 17:56:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:56:05,229 INFO L85 PathProgramCache]: Analyzing trace with hash 232753330, now seen corresponding path program 1 times [2022-12-13 17:56:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:56:05,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764606958] [2022-12-13 17:56:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:56:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:56:05,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:56:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:56:05,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:56:05,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 29 remaining) [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (23 of 29 remaining) [2022-12-13 17:56:05,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (16 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (15 of 29 remaining) [2022-12-13 17:56:05,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (10 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2022-12-13 17:56:05,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (5 of 29 remaining) [2022-12-13 17:56:05,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2022-12-13 17:56:05,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2022-12-13 17:56:05,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2022-12-13 17:56:05,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2022-12-13 17:56:05,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2022-12-13 17:56:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 17:56:05,248 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:56:05,249 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:56:05,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 17:56:05,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 17:56:05,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 155 transitions, 342 flow [2022-12-13 17:56:05,372 INFO L130 PetriNetUnfolder]: 23/349 cut-off events. [2022-12-13 17:56:05,372 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 17:56:05,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 349 events. 23/349 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1287 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 286. Up to 10 conditions per place. [2022-12-13 17:56:05,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 155 transitions, 342 flow [2022-12-13 17:56:05,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 155 transitions, 342 flow [2022-12-13 17:56:05,377 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:56:05,377 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 155 transitions, 342 flow [2022-12-13 17:56:05,378 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 155 transitions, 342 flow [2022-12-13 17:56:05,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 155 transitions, 342 flow [2022-12-13 17:56:05,413 INFO L130 PetriNetUnfolder]: 23/349 cut-off events. [2022-12-13 17:56:05,413 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 17:56:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 349 events. 23/349 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1287 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 286. Up to 10 conditions per place. [2022-12-13 17:56:05,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 13944 [2022-12-13 17:56:06,736 INFO L134 LiptonReduction]: Checked pairs total: 58844 [2022-12-13 17:56:06,736 INFO L136 LiptonReduction]: Total number of compositions: 85 [2022-12-13 17:56:06,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:56:06,737 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;@305dd06a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:56:06,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-12-13 17:56:06,738 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-12-13 17:56:06,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:56:06,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:56:06,739 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:56:06,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 17:56:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:56:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 35835, now seen corresponding path program 1 times [2022-12-13 17:56:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:56:06,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102388924] [2022-12-13 17:56:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:56:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:56:06,764 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 17:56:06,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:56:06,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102388924] [2022-12-13 17:56:06,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102388924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:56:06,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:56:06,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:56:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696905225] [2022-12-13 17:56:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:56:06,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:56:06,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:56:06,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:56:06,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:56:06,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 240 [2022-12-13 17:56:06,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:06,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:56:06,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 240 [2022-12-13 17:56:06,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:56:42,120 INFO L130 PetriNetUnfolder]: 372647/528563 cut-off events. [2022-12-13 17:56:42,121 INFO L131 PetriNetUnfolder]: For 10977/10977 co-relation queries the response was YES. [2022-12-13 17:56:42,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003471 conditions, 528563 events. 372647/528563 cut-off events. For 10977/10977 co-relation queries the response was YES. Maximal size of possible extension queue 17915. Compared 4670327 event pairs, 273104 based on Foata normal form. 48695/394302 useless extension candidates. Maximal degree in co-relation 90185. Up to 396634 conditions per place. [2022-12-13 17:56:45,062 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 88 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2022-12-13 17:56:45,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 120 transitions, 452 flow [2022-12-13 17:56:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:56:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:56:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2022-12-13 17:56:45,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5805555555555556 [2022-12-13 17:56:45,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2022-12-13 17:56:45,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2022-12-13 17:56:45,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:56:45,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2022-12-13 17:56:45,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:45,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:45,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:45,067 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 222 flow. Second operand 3 states and 418 transitions. [2022-12-13 17:56:45,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 120 transitions, 452 flow [2022-12-13 17:56:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 120 transitions, 440 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 17:56:45,076 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 192 flow [2022-12-13 17:56:45,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2022-12-13 17:56:45,076 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2022-12-13 17:56:45,076 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 192 flow [2022-12-13 17:56:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:56:45,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:56:45,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:56:45,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 17:56:45,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 17:56:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:56:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 35836, now seen corresponding path program 1 times [2022-12-13 17:56:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:56:45,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772212962] [2022-12-13 17:56:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:56:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:56:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:56:45,089 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 17:56:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:56:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772212962] [2022-12-13 17:56:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772212962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:56:45,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:56:45,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:56:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091787172] [2022-12-13 17:56:45,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:56:45,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:56:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:56:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:56:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:56:45,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 240 [2022-12-13 17:56:45,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 192 flow. Second operand has 3 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 17:56:45,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:56:45,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 240 [2022-12-13 17:56:45,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:57:21,874 INFO L130 PetriNetUnfolder]: 409366/571929 cut-off events. [2022-12-13 17:57:21,874 INFO L131 PetriNetUnfolder]: For 5372/5372 co-relation queries the response was YES. [2022-12-13 17:57:22,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102766 conditions, 571929 events. 409366/571929 cut-off events. For 5372/5372 co-relation queries the response was YES. Maximal size of possible extension queue 20918. Compared 4985536 event pairs, 189309 based on Foata normal form. 0/376851 useless extension candidates. Maximal degree in co-relation 942081. Up to 274618 conditions per place. [2022-12-13 17:57:25,200 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 96 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2022-12-13 17:57:25,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 133 transitions, 511 flow [2022-12-13 17:57:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:57:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:57:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2022-12-13 17:57:25,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5569444444444445 [2022-12-13 17:57:25,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2022-12-13 17:57:25,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2022-12-13 17:57:25,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:57:25,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2022-12-13 17:57:25,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:57:25,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:57:25,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:57:25,204 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 192 flow. Second operand 3 states and 401 transitions. [2022-12-13 17:57:25,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 133 transitions, 511 flow [2022-12-13 17:57:32,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 507 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:57:32,944 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 242 flow [2022-12-13 17:57:32,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2022-12-13 17:57:32,945 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-12-13 17:57:32,945 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 242 flow [2022-12-13 17:57:32,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 17:57:32,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:57:32,945 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:57:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 17:57:32,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 17:57:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:57:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1111931, now seen corresponding path program 1 times [2022-12-13 17:57:32,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:57:32,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538887474] [2022-12-13 17:57:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:57:32,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:57:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:57:32,958 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 17:57:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:57:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538887474] [2022-12-13 17:57:32,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538887474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:57:32,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:57:32,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:57:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165382041] [2022-12-13 17:57:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:57:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:57:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:57:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:57:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:57:32,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 240 [2022-12-13 17:57:32,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:57:32,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:57:32,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 240 [2022-12-13 17:57:32,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:58:17,464 INFO L130 PetriNetUnfolder]: 443845/634997 cut-off events. [2022-12-13 17:58:17,464 INFO L131 PetriNetUnfolder]: For 102848/103727 co-relation queries the response was YES. [2022-12-13 17:58:18,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311002 conditions, 634997 events. 443845/634997 cut-off events. For 102848/103727 co-relation queries the response was YES. Maximal size of possible extension queue 24463. Compared 5891274 event pairs, 184350 based on Foata normal form. 0/449285 useless extension candidates. Maximal degree in co-relation 398165. Up to 308094 conditions per place. [2022-12-13 17:58:21,239 INFO L137 encePairwiseOnDemand]: 229/240 looper letters, 94 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2022-12-13 17:58:21,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 578 flow [2022-12-13 17:58:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:58:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:58:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-12-13 17:58:21,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-13 17:58:21,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-12-13 17:58:21,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-12-13 17:58:21,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:58:21,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-12-13 17:58:21,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:21,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:21,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:21,243 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 242 flow. Second operand 3 states and 400 transitions. [2022-12-13 17:58:21,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 578 flow [2022-12-13 17:58:25,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:58:25,727 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 354 flow [2022-12-13 17:58:25,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2022-12-13 17:58:25,728 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2022-12-13 17:58:25,728 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 354 flow [2022-12-13 17:58:25,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:25,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:58:25,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:58:25,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 17:58:25,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 17:58:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:58:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1111932, now seen corresponding path program 1 times [2022-12-13 17:58:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:58:25,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453298325] [2022-12-13 17:58:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:58:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:58:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:58:25,754 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 17:58:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:58:25,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453298325] [2022-12-13 17:58:25,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453298325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:58:25,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:58:25,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:58:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030625757] [2022-12-13 17:58:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:58:25,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:58:25,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:58:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:58:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:58:25,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 240 [2022-12-13 17:58:25,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 354 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 17:58:25,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:58:25,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 240 [2022-12-13 17:58:25,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:59:06,401 INFO L130 PetriNetUnfolder]: 393655/554405 cut-off events. [2022-12-13 17:59:06,401 INFO L131 PetriNetUnfolder]: For 172372/173378 co-relation queries the response was YES. [2022-12-13 17:59:07,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280285 conditions, 554405 events. 393655/554405 cut-off events. For 172372/173378 co-relation queries the response was YES. Maximal size of possible extension queue 21135. Compared 4894586 event pairs, 137894 based on Foata normal form. 23922/423867 useless extension candidates. Maximal degree in co-relation 356248. Up to 295086 conditions per place. [2022-12-13 17:59:10,049 INFO L137 encePairwiseOnDemand]: 236/240 looper letters, 103 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2022-12-13 17:59:10,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 652 flow [2022-12-13 17:59:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:59:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:59:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2022-12-13 17:59:10,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5680555555555555 [2022-12-13 17:59:10,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2022-12-13 17:59:10,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2022-12-13 17:59:10,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:59:10,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2022-12-13 17:59:10,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:59:10,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:59:10,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:59:10,053 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 354 flow. Second operand 3 states and 409 transitions. [2022-12-13 17:59:10,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 652 flow [2022-12-13 17:59:20,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 624 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:59:20,087 INFO L231 Difference]: Finished difference. Result has 92 places, 100 transitions, 330 flow [2022-12-13 17:59:20,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=92, PETRI_TRANSITIONS=100} [2022-12-13 17:59:20,088 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-12-13 17:59:20,088 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 100 transitions, 330 flow [2022-12-13 17:59:20,088 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 17:59:20,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:59:20,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:59:20,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 17:59:20,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 17:59:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:59:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1068527127, now seen corresponding path program 1 times [2022-12-13 17:59:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:59:20,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490579132] [2022-12-13 17:59:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:59:20,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:59:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:59:20,105 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 17:59:20,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:59:20,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490579132] [2022-12-13 17:59:20,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490579132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:59:20,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:59:20,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:59:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228102851] [2022-12-13 17:59:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:59:20,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:59:20,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:59:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:59:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:59:20,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 240 [2022-12-13 17:59:20,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 100 transitions, 330 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 17:59:20,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:59:20,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 240 [2022-12-13 17:59:20,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:00:17,706 INFO L130 PetriNetUnfolder]: 541906/784500 cut-off events. [2022-12-13 18:00:17,706 INFO L131 PetriNetUnfolder]: For 289160/291914 co-relation queries the response was YES. [2022-12-13 18:00:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744759 conditions, 784500 events. 541906/784500 cut-off events. For 289160/291914 co-relation queries the response was YES. Maximal size of possible extension queue 32677. Compared 7675096 event pairs, 186699 based on Foata normal form. 16/561811 useless extension candidates. Maximal degree in co-relation 1691743. Up to 383493 conditions per place. [2022-12-13 18:00:23,016 INFO L137 encePairwiseOnDemand]: 228/240 looper letters, 115 selfloop transitions, 24 changer transitions 0/167 dead transitions. [2022-12-13 18:00:23,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 167 transitions, 863 flow [2022-12-13 18:00:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:00:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:00:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2022-12-13 18:00:23,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2022-12-13 18:00:23,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2022-12-13 18:00:23,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2022-12-13 18:00:23,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:00:23,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2022-12-13 18:00:23,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:00:23,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:00:23,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:00:23,021 INFO L175 Difference]: Start difference. First operand has 92 places, 100 transitions, 330 flow. Second operand 3 states and 408 transitions. [2022-12-13 18:00:23,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 167 transitions, 863 flow [2022-12-13 18:00:24,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 167 transitions, 847 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:00:24,400 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 590 flow [2022-12-13 18:00:24,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=94, PETRI_TRANSITIONS=123} [2022-12-13 18:00:24,400 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2022-12-13 18:00:24,401 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 590 flow [2022-12-13 18:00:24,401 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 18:00:24,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:00:24,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:00:24,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 18:00:24,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 18:00:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:00:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1068527128, now seen corresponding path program 1 times [2022-12-13 18:00:24,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:00:24,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758670561] [2022-12-13 18:00:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:00:24,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:00:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:00:24,429 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 18:00:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:00:24,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758670561] [2022-12-13 18:00:24,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758670561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:00:24,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:00:24,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:00:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338523418] [2022-12-13 18:00:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:00:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:00:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:00:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:00:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:00:24,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 240 [2022-12-13 18:00:24,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:00:24,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:00:24,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 240 [2022-12-13 18:00:24,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:01:14,048 INFO L130 PetriNetUnfolder]: 459023/655376 cut-off events. [2022-12-13 18:01:14,048 INFO L131 PetriNetUnfolder]: For 452354/457908 co-relation queries the response was YES. [2022-12-13 18:01:15,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682384 conditions, 655376 events. 459023/655376 cut-off events. For 452354/457908 co-relation queries the response was YES. Maximal size of possible extension queue 26537. Compared 6134250 event pairs, 92082 based on Foata normal form. 35694/523065 useless extension candidates. Maximal degree in co-relation 1628412. Up to 449474 conditions per place. [2022-12-13 18:01:18,465 INFO L137 encePairwiseOnDemand]: 236/240 looper letters, 141 selfloop transitions, 9 changer transitions 0/178 dead transitions. [2022-12-13 18:01:18,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 178 transitions, 1129 flow [2022-12-13 18:01:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:01:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:01:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2022-12-13 18:01:18,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2022-12-13 18:01:18,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2022-12-13 18:01:18,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2022-12-13 18:01:18,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:01:18,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2022-12-13 18:01:18,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:01:18,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:01:18,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:01:18,469 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 590 flow. Second operand 3 states and 417 transitions. [2022-12-13 18:01:18,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 178 transitions, 1129 flow [2022-12-13 18:01:24,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 178 transitions, 1081 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:01:24,764 INFO L231 Difference]: Finished difference. Result has 92 places, 121 transitions, 556 flow [2022-12-13 18:01:24,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=92, PETRI_TRANSITIONS=121} [2022-12-13 18:01:24,764 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-12-13 18:01:24,764 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 121 transitions, 556 flow [2022-12-13 18:01:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:01:24,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:01:24,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:01:24,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 18:01:24,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 18:01:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:01:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1233243008, now seen corresponding path program 1 times [2022-12-13 18:01:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:01:24,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331859885] [2022-12-13 18:01:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:01:24,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:01:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:01:24,789 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 18:01:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:01:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331859885] [2022-12-13 18:01:24,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331859885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:01:24,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:01:24,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:01:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146883310] [2022-12-13 18:01:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:01:24,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:01:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:01:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:01:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:01:24,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 240 [2022-12-13 18:01:24,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 121 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:01:24,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:01:24,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 240 [2022-12-13 18:01:24,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand