./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R --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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- 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-38b53e6 [2022-11-25 17:17:27,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:17:27,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:17:28,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:17:28,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:17:28,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:17:28,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:17:28,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:17:28,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:17:28,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:17:28,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:17:28,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:17:28,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:17:28,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:17:28,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:17:28,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:17:28,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:17:28,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:17:28,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:17:28,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:17:28,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:17:28,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:17:28,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:17:28,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:17:28,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:17:28,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:17:28,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:17:28,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:17:28,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:17:28,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:17:28,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:17:28,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:17:28,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:17:28,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:17:28,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:17:28,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:17:28,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:17:28,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:17:28,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:17:28,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:17:28,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:17:28,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:17:28,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:17:28,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:17:28,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:17:28,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:17:28,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:17:28,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:17:28,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:17:28,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:17:28,139 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:17:28,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:17:28,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:17:28,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:17:28,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:17:28,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:17:28,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:17:28,142 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:17:28,142 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:17:28,142 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:17:28,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:17:28,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:17:28,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:17:28,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:17:28,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:17:28,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:17:28,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:17:28,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:17:28,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:17:28,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:17:28,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:17:28,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:17:28,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:17:28,146 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:17:28,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:17:28,146 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_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-11-25 17:17:28,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:17:28,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:17:28,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:17:28,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:17:28,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:17:28,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-11-25 17:17:31,752 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:17:32,068 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:17:32,072 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-11-25 17:17:32,083 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/data/15f46e4f1/f6086af2ad2244779ac25fa32e200681/FLAGf3c1d6112 [2022-11-25 17:17:32,107 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/data/15f46e4f1/f6086af2ad2244779ac25fa32e200681 [2022-11-25 17:17:32,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:17:32,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:17:32,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:32,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:17:32,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:17:32,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c036df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32, skipping insertion in model container [2022-11-25 17:17:32,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:17:32,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:17:32,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,418 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_d98636f7-8ecc-444d-95f7-6fc1e9444371/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-11-25 17:17:32,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:32,441 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:17:32,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:17:32,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:17:32,491 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_d98636f7-8ecc-444d-95f7-6fc1e9444371/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-11-25 17:17:32,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:17:32,510 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:17:32,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32 WrapperNode [2022-11-25 17:17:32,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:17:32,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:32,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:17:32,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:17:32,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,602 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-11-25 17:17:32,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:17:32,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:17:32,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:17:32,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:17:32,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:17:32,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:17:32,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:17:32,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:17:32,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (1/1) ... [2022-11-25 17:17:32,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:17:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:17:32,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:17:32,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d98636f7-8ecc-444d-95f7-6fc1e9444371/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:17:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:17:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:17:32,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:17:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:17:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:17:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:17:32,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:17:32,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:17:32,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:17:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:17:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:17:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:17:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:17:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:17:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:17:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:17:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:17:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:17:32,750 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:17:32,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:17:32,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:17:33,367 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:17:33,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:17:33,497 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:17:33,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:33 BoogieIcfgContainer [2022-11-25 17:17:33,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:17:33,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:17:33,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:17:33,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:17:33,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:17:32" (1/3) ... [2022-11-25 17:17:33,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ae016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:17:33, skipping insertion in model container [2022-11-25 17:17:33,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:17:32" (2/3) ... [2022-11-25 17:17:33,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ae016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:17:33, skipping insertion in model container [2022-11-25 17:17:33,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:17:33" (3/3) ... [2022-11-25 17:17:33,511 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-11-25 17:17:33,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:17:33,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 17:17:33,536 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:17:33,638 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:17:33,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 158 transitions, 348 flow [2022-11-25 17:17:33,846 INFO L130 PetriNetUnfolder]: 2/154 cut-off events. [2022-11-25 17:17:33,846 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:17:33,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 154 events. 2/154 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-11-25 17:17:33,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 158 transitions, 348 flow [2022-11-25 17:17:33,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 149 transitions, 322 flow [2022-11-25 17:17:33,875 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:17:33,906 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 149 transitions, 322 flow [2022-11-25 17:17:33,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 149 transitions, 322 flow [2022-11-25 17:17:33,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 149 transitions, 322 flow [2022-11-25 17:17:33,975 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-11-25 17:17:33,976 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:17:33,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 149 events. 2/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-11-25 17:17:33,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 2336 [2022-11-25 17:17:43,449 INFO L134 LiptonReduction]: Checked pairs total: 7948 [2022-11-25 17:17:43,450 INFO L136 LiptonReduction]: Total number of compositions: 134 [2022-11-25 17:17:43,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:17:43,479 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;@2938dd89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:17:43,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 17:17:43,481 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:17:43,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:17:43,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:43,482 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:17:43,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash 597, now seen corresponding path program 1 times [2022-11-25 17:17:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:43,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940440437] [2022-11-25 17:17:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:43,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:43,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940440437] [2022-11-25 17:17:43,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940440437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:43,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:43,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:17:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204160746] [2022-11-25 17:17:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:43,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:17:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:17:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:17:43,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 292 [2022-11-25 17:17:43,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 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) [2022-11-25 17:17:43,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:43,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 292 [2022-11-25 17:17:43,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:44,713 INFO L130 PetriNetUnfolder]: 4185/5919 cut-off events. [2022-11-25 17:17:44,713 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-11-25 17:17:44,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12064 conditions, 5919 events. 4185/5919 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 30177 event pairs, 4185 based on Foata normal form. 0/5044 useless extension candidates. Maximal degree in co-relation 9923. Up to 5885 conditions per place. [2022-11-25 17:17:44,776 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 43 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2022-11-25 17:17:44,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 204 flow [2022-11-25 17:17:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:17:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:17:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 332 transitions. [2022-11-25 17:17:44,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684931506849316 [2022-11-25 17:17:44,805 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 332 transitions. [2022-11-25 17:17:44,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 332 transitions. [2022-11-25 17:17:44,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:44,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 332 transitions. [2022-11-25 17:17:44,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:44,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:44,829 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:44,831 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 124 flow. Second operand 2 states and 332 transitions. [2022-11-25 17:17:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 204 flow [2022-11-25 17:17:44,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:17:44,848 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 102 flow [2022-11-25 17:17:44,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2022-11-25 17:17:44,859 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2022-11-25 17:17:44,860 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 102 flow [2022-11-25 17:17:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 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) [2022-11-25 17:17:44,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:44,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:17:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:17:44,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash 586408, now seen corresponding path program 1 times [2022-11-25 17:17:44,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:44,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135943346] [2022-11-25 17:17:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:44,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:45,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135943346] [2022-11-25 17:17:45,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135943346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:45,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:45,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686556528] [2022-11-25 17:17:45,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:45,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2022-11-25 17:17:45,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:45,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:45,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2022-11-25 17:17:45,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:46,234 INFO L130 PetriNetUnfolder]: 4038/5704 cut-off events. [2022-11-25 17:17:46,234 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:46,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11461 conditions, 5704 events. 4038/5704 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 28856 event pairs, 4038 based on Foata normal form. 0/4897 useless extension candidates. Maximal degree in co-relation 11458. Up to 5669 conditions per place. [2022-11-25 17:17:46,275 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 40 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2022-11-25 17:17:46,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 180 flow [2022-11-25 17:17:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2022-11-25 17:17:46,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5011415525114156 [2022-11-25 17:17:46,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2022-11-25 17:17:46,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2022-11-25 17:17:46,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:46,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2022-11-25 17:17:46,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:46,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:46,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:46,295 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 102 flow. Second operand 3 states and 439 transitions. [2022-11-25 17:17:46,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 180 flow [2022-11-25 17:17:46,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:17:46,304 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 100 flow [2022-11-25 17:17:46,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2022-11-25 17:17:46,306 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2022-11-25 17:17:46,306 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 100 flow [2022-11-25 17:17:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:46,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:46,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:17:46,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:17:46,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:46,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash 586409, now seen corresponding path program 1 times [2022-11-25 17:17:46,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:46,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389124136] [2022-11-25 17:17:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:46,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:46,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:46,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389124136] [2022-11-25 17:17:46,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389124136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:46,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:46,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:46,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396196790] [2022-11-25 17:17:46,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:46,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:46,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:46,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:46,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2022-11-25 17:17:46,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 100 flow. Second operand has 3 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) [2022-11-25 17:17:46,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:46,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2022-11-25 17:17:46,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:47,512 INFO L130 PetriNetUnfolder]: 3891/5489 cut-off events. [2022-11-25 17:17:47,512 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:47,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 5489 events. 3891/5489 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 27584 event pairs, 3891 based on Foata normal form. 0/4750 useless extension candidates. Maximal degree in co-relation 11029. Up to 5454 conditions per place. [2022-11-25 17:17:47,560 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 38 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-11-25 17:17:47,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 174 flow [2022-11-25 17:17:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2022-11-25 17:17:47,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.519406392694064 [2022-11-25 17:17:47,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2022-11-25 17:17:47,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2022-11-25 17:17:47,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:47,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2022-11-25 17:17:47,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:47,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:47,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:47,569 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 100 flow. Second operand 3 states and 455 transitions. [2022-11-25 17:17:47,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 174 flow [2022-11-25 17:17:47,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:47,572 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 97 flow [2022-11-25 17:17:47,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2022-11-25 17:17:47,574 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -11 predicate places. [2022-11-25 17:17:47,575 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 97 flow [2022-11-25 17:17:47,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-25 17:17:47,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:47,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:17:47,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:17:47,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash 563553781, now seen corresponding path program 1 times [2022-11-25 17:17:47,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:47,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726177828] [2022-11-25 17:17:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:47,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726177828] [2022-11-25 17:17:47,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726177828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:47,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:47,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:47,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137498181] [2022-11-25 17:17:47,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:47,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:47,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:47,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2022-11-25 17:17:47,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:47,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:47,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2022-11-25 17:17:47,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:48,652 INFO L130 PetriNetUnfolder]: 3843/5409 cut-off events. [2022-11-25 17:17:48,652 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:48,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10874 conditions, 5409 events. 3843/5409 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 27126 event pairs, 3843 based on Foata normal form. 0/4704 useless extension candidates. Maximal degree in co-relation 10870. Up to 5374 conditions per place. [2022-11-25 17:17:48,690 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 36 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-11-25 17:17:48,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 167 flow [2022-11-25 17:17:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-11-25 17:17:48,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5171232876712328 [2022-11-25 17:17:48,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-11-25 17:17:48,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-11-25 17:17:48,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:48,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-11-25 17:17:48,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:48,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:48,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:48,700 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 97 flow. Second operand 3 states and 453 transitions. [2022-11-25 17:17:48,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 167 flow [2022-11-25 17:17:48,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:48,703 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 94 flow [2022-11-25 17:17:48,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-11-25 17:17:48,704 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -12 predicate places. [2022-11-25 17:17:48,704 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 94 flow [2022-11-25 17:17:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:48,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:48,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:17:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:17:48,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 563553782, now seen corresponding path program 1 times [2022-11-25 17:17:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:48,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203356600] [2022-11-25 17:17:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:48,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:48,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203356600] [2022-11-25 17:17:48,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203356600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:48,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:48,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024260640] [2022-11-25 17:17:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:48,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2022-11-25 17:17:48,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 94 flow. Second operand has 3 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) [2022-11-25 17:17:48,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:48,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2022-11-25 17:17:48,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:49,728 INFO L130 PetriNetUnfolder]: 3795/5329 cut-off events. [2022-11-25 17:17:49,728 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:49,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 5329 events. 3795/5329 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26664 event pairs, 3795 based on Foata normal form. 0/4658 useless extension candidates. Maximal degree in co-relation 10711. Up to 5294 conditions per place. [2022-11-25 17:17:49,767 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 34 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-11-25 17:17:49,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 160 flow [2022-11-25 17:17:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-11-25 17:17:49,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4942922374429224 [2022-11-25 17:17:49,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-11-25 17:17:49,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-11-25 17:17:49,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:49,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-11-25 17:17:49,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:49,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:49,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:49,775 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 94 flow. Second operand 3 states and 433 transitions. [2022-11-25 17:17:49,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 160 flow [2022-11-25 17:17:49,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:49,778 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 91 flow [2022-11-25 17:17:49,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2022-11-25 17:17:49,781 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -13 predicate places. [2022-11-25 17:17:49,781 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 91 flow [2022-11-25 17:17:49,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-25 17:17:49,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:49,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:49,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:17:49,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash 409319886, now seen corresponding path program 1 times [2022-11-25 17:17:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:49,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503756536] [2022-11-25 17:17:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:49,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:49,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503756536] [2022-11-25 17:17:49,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503756536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:49,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:49,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:49,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446031112] [2022-11-25 17:17:49,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:49,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:49,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:49,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2022-11-25 17:17:49,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:49,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:49,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2022-11-25 17:17:49,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:50,597 INFO L130 PetriNetUnfolder]: 3648/5114 cut-off events. [2022-11-25 17:17:50,598 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:50,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 5114 events. 3648/5114 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 25374 event pairs, 3648 based on Foata normal form. 0/4511 useless extension candidates. Maximal degree in co-relation 10282. Up to 5079 conditions per place. [2022-11-25 17:17:50,631 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 32 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-11-25 17:17:50,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 153 flow [2022-11-25 17:17:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-11-25 17:17:50,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5125570776255708 [2022-11-25 17:17:50,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-11-25 17:17:50,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-11-25 17:17:50,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:50,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-11-25 17:17:50,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:50,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:50,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:50,640 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 91 flow. Second operand 3 states and 449 transitions. [2022-11-25 17:17:50,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 153 flow [2022-11-25 17:17:50,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:50,643 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 88 flow [2022-11-25 17:17:50,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2022-11-25 17:17:50,646 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -14 predicate places. [2022-11-25 17:17:50,646 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 88 flow [2022-11-25 17:17:50,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:50,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:50,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:17:50,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash 409319887, now seen corresponding path program 1 times [2022-11-25 17:17:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:50,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854748070] [2022-11-25 17:17:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:50,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:50,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854748070] [2022-11-25 17:17:50,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854748070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:50,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:50,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084110196] [2022-11-25 17:17:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:50,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:50,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:50,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2022-11-25 17:17:50,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:50,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:50,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2022-11-25 17:17:50,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:51,356 INFO L130 PetriNetUnfolder]: 3501/4899 cut-off events. [2022-11-25 17:17:51,356 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:51,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9857 conditions, 4899 events. 3501/4899 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24160 event pairs, 3501 based on Foata normal form. 0/4364 useless extension candidates. Maximal degree in co-relation 9853. Up to 4864 conditions per place. [2022-11-25 17:17:51,392 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 30 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-11-25 17:17:51,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 146 flow [2022-11-25 17:17:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-11-25 17:17:51,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897260273972603 [2022-11-25 17:17:51,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-11-25 17:17:51,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-11-25 17:17:51,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:51,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-11-25 17:17:51,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:51,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:51,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:51,400 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 88 flow. Second operand 3 states and 429 transitions. [2022-11-25 17:17:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 146 flow [2022-11-25 17:17:51,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:51,402 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 85 flow [2022-11-25 17:17:51,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2022-11-25 17:17:51,403 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -15 predicate places. [2022-11-25 17:17:51,403 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 85 flow [2022-11-25 17:17:51,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:51,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:51,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:51,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:17:51,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1780565056, now seen corresponding path program 1 times [2022-11-25 17:17:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:51,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759297639] [2022-11-25 17:17:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:51,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:51,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759297639] [2022-11-25 17:17:51,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759297639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:51,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:51,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:17:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303847168] [2022-11-25 17:17:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:51,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:17:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:17:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:17:51,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 292 [2022-11-25 17:17:51,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 85 flow. Second operand has 3 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) [2022-11-25 17:17:51,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:51,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 292 [2022-11-25 17:17:51,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:52,088 INFO L130 PetriNetUnfolder]: 2733/3875 cut-off events. [2022-11-25 17:17:52,089 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:52,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 3875 events. 2733/3875 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 18721 event pairs, 2733 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 7806. Up to 3840 conditions per place. [2022-11-25 17:17:52,115 INFO L137 encePairwiseOnDemand]: 290/292 looper letters, 29 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-11-25 17:17:52,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 143 flow [2022-11-25 17:17:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2022-11-25 17:17:52,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4908675799086758 [2022-11-25 17:17:52,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2022-11-25 17:17:52,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2022-11-25 17:17:52,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:52,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2022-11-25 17:17:52,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,124 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 85 flow. Second operand 3 states and 430 transitions. [2022-11-25 17:17:52,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 143 flow [2022-11-25 17:17:52,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:52,126 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 84 flow [2022-11-25 17:17:52,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2022-11-25 17:17:52,130 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -15 predicate places. [2022-11-25 17:17:52,130 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 84 flow [2022-11-25 17:17:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-25 17:17:52,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:52,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:52,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:17:52,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1780565058, now seen corresponding path program 1 times [2022-11-25 17:17:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:52,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718851964] [2022-11-25 17:17:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:52,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:52,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718851964] [2022-11-25 17:17:52,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718851964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:52,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:52,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:17:52,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309664183] [2022-11-25 17:17:52,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:52,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:17:52,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:52,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:17:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:17:52,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 292 [2022-11-25 17:17:52,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:52,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 292 [2022-11-25 17:17:52,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:17:52,969 INFO L130 PetriNetUnfolder]: 1965/2851 cut-off events. [2022-11-25 17:17:52,969 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 17:17:52,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5763 conditions, 2851 events. 1965/2851 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13396 event pairs, 1965 based on Foata normal form. 0/2828 useless extension candidates. Maximal degree in co-relation 5759. Up to 2816 conditions per place. [2022-11-25 17:17:52,987 INFO L137 encePairwiseOnDemand]: 290/292 looper letters, 28 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-11-25 17:17:52,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 33 transitions, 140 flow [2022-11-25 17:17:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:17:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:17:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2022-11-25 17:17:52,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2022-11-25 17:17:52,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2022-11-25 17:17:52,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2022-11-25 17:17:52,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:17:52,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2022-11-25 17:17:52,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,995 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 84 flow. Second operand 3 states and 390 transitions. [2022-11-25 17:17:52,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 33 transitions, 140 flow [2022-11-25 17:17:52,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:17:52,997 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 83 flow [2022-11-25 17:17:52,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2022-11-25 17:17:52,998 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -15 predicate places. [2022-11-25 17:17:52,998 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 83 flow [2022-11-25 17:17:52,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:52,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:17:52,999 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:17:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:17:53,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:17:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:17:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1811378306, now seen corresponding path program 1 times [2022-11-25 17:17:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:17:53,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198094630] [2022-11-25 17:17:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:17:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:17:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:17:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:17:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:17:56,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198094630] [2022-11-25 17:17:56,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198094630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:17:56,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:17:56,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:17:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947122404] [2022-11-25 17:17:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:17:56,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:17:56,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:17:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:17:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:17:57,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:17:57,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 83 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:17:57,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:17:57,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:17:57,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:01,239 INFO L130 PetriNetUnfolder]: 8288/11970 cut-off events. [2022-11-25 17:18:01,241 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2022-11-25 17:18:01,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24210 conditions, 11970 events. 8288/11970 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 64903 event pairs, 1189 based on Foata normal form. 1/11971 useless extension candidates. Maximal degree in co-relation 24206. Up to 3495 conditions per place. [2022-11-25 17:18:01,312 INFO L137 encePairwiseOnDemand]: 278/292 looper letters, 207 selfloop transitions, 16 changer transitions 17/240 dead transitions. [2022-11-25 17:18:01,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 240 transitions, 1026 flow [2022-11-25 17:18:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:18:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 17:18:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1966 transitions. [2022-11-25 17:18:01,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4488584474885845 [2022-11-25 17:18:01,321 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1966 transitions. [2022-11-25 17:18:01,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1966 transitions. [2022-11-25 17:18:01,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:01,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1966 transitions. [2022-11-25 17:18:01,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 131.06666666666666) internal successors, (1966), 15 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:01,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 292.0) internal successors, (4672), 16 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:01,339 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 292.0) internal successors, (4672), 16 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:01,339 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 83 flow. Second operand 15 states and 1966 transitions. [2022-11-25 17:18:01,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 240 transitions, 1026 flow [2022-11-25 17:18:01,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 240 transitions, 1025 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:18:01,345 INFO L231 Difference]: Finished difference. Result has 72 places, 49 transitions, 205 flow [2022-11-25 17:18:01,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=205, PETRI_PLACES=72, PETRI_TRANSITIONS=49} [2022-11-25 17:18:01,347 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-11-25 17:18:01,348 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 49 transitions, 205 flow [2022-11-25 17:18:01,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:01,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:01,349 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:18:01,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1345957102, now seen corresponding path program 2 times [2022-11-25 17:18:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:01,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654564168] [2022-11-25 17:18:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:01,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:01,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:01,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654564168] [2022-11-25 17:18:01,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654564168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:01,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:01,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:18:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926973281] [2022-11-25 17:18:01,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:01,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:18:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:18:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:18:01,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 292 [2022-11-25 17:18:01,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 49 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:01,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:01,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 292 [2022-11-25 17:18:01,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:02,553 INFO L130 PetriNetUnfolder]: 3741/5654 cut-off events. [2022-11-25 17:18:02,553 INFO L131 PetriNetUnfolder]: For 6564/6669 co-relation queries the response was YES. [2022-11-25 17:18:02,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17574 conditions, 5654 events. 3741/5654 cut-off events. For 6564/6669 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 30447 event pairs, 1112 based on Foata normal form. 180/5755 useless extension candidates. Maximal degree in co-relation 17560. Up to 4594 conditions per place. [2022-11-25 17:18:02,591 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 62 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-11-25 17:18:02,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 425 flow [2022-11-25 17:18:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:18:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:18:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2022-11-25 17:18:02,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308219178082192 [2022-11-25 17:18:02,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2022-11-25 17:18:02,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2022-11-25 17:18:02,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:02,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2022-11-25 17:18:02,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:02,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:02,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:02,601 INFO L175 Difference]: Start difference. First operand has 72 places, 49 transitions, 205 flow. Second operand 3 states and 465 transitions. [2022-11-25 17:18:02,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 425 flow [2022-11-25 17:18:02,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 421 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:18:02,664 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 212 flow [2022-11-25 17:18:02,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2022-11-25 17:18:02,665 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2022-11-25 17:18:02,665 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 212 flow [2022-11-25 17:18:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:02,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:02,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:18:02,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1866069760, now seen corresponding path program 3 times [2022-11-25 17:18:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046114896] [2022-11-25 17:18:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:02,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046114896] [2022-11-25 17:18:02,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046114896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:02,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:02,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:18:02,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615239161] [2022-11-25 17:18:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:18:02,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:18:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:18:02,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 292 [2022-11-25 17:18:02,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:02,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:02,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 292 [2022-11-25 17:18:02,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:03,640 INFO L130 PetriNetUnfolder]: 3035/4701 cut-off events. [2022-11-25 17:18:03,641 INFO L131 PetriNetUnfolder]: For 5618/5687 co-relation queries the response was YES. [2022-11-25 17:18:03,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14844 conditions, 4701 events. 3035/4701 cut-off events. For 5618/5687 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 26223 event pairs, 905 based on Foata normal form. 36/4667 useless extension candidates. Maximal degree in co-relation 14830. Up to 4459 conditions per place. [2022-11-25 17:18:03,687 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 52 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2022-11-25 17:18:03,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 367 flow [2022-11-25 17:18:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:18:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:18:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2022-11-25 17:18:03,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308219178082192 [2022-11-25 17:18:03,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2022-11-25 17:18:03,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2022-11-25 17:18:03,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:03,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2022-11-25 17:18:03,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:03,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:03,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:03,697 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 212 flow. Second operand 3 states and 465 transitions. [2022-11-25 17:18:03,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 367 flow [2022-11-25 17:18:03,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 60 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:18:03,713 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 213 flow [2022-11-25 17:18:03,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2022-11-25 17:18:03,714 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-11-25 17:18:03,715 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 213 flow [2022-11-25 17:18:03,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:03,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:03,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:18:03,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash 190208544, now seen corresponding path program 4 times [2022-11-25 17:18:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:03,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714473149] [2022-11-25 17:18:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:03,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:06,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714473149] [2022-11-25 17:18:06,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714473149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:06,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:06,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:18:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746069396] [2022-11-25 17:18:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:18:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:06,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:18:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:07,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:18:07,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 213 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:07,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:07,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:18:07,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:11,627 INFO L130 PetriNetUnfolder]: 8593/13229 cut-off events. [2022-11-25 17:18:11,627 INFO L131 PetriNetUnfolder]: For 13902/13902 co-relation queries the response was YES. [2022-11-25 17:18:11,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40595 conditions, 13229 events. 8593/13229 cut-off events. For 13902/13902 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 80973 event pairs, 1369 based on Foata normal form. 1/13230 useless extension candidates. Maximal degree in co-relation 40580. Up to 4480 conditions per place. [2022-11-25 17:18:11,748 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 241 selfloop transitions, 24 changer transitions 10/275 dead transitions. [2022-11-25 17:18:11,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 275 transitions, 1642 flow [2022-11-25 17:18:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:18:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:18:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1835 transitions. [2022-11-25 17:18:11,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4488747553816047 [2022-11-25 17:18:11,755 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1835 transitions. [2022-11-25 17:18:11,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1835 transitions. [2022-11-25 17:18:11,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:11,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1835 transitions. [2022-11-25 17:18:11,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.07142857142858) internal successors, (1835), 14 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:11,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:11,772 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:11,773 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 213 flow. Second operand 14 states and 1835 transitions. [2022-11-25 17:18:11,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 275 transitions, 1642 flow [2022-11-25 17:18:11,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 275 transitions, 1624 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:18:11,988 INFO L231 Difference]: Finished difference. Result has 95 places, 69 transitions, 458 flow [2022-11-25 17:18:11,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=458, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2022-11-25 17:18:11,990 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2022-11-25 17:18:11,990 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 458 flow [2022-11-25 17:18:11,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:11,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:11,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:18:11,992 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:11,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash -311494044, now seen corresponding path program 5 times [2022-11-25 17:18:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:11,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705747318] [2022-11-25 17:18:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:11,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:12,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:12,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705747318] [2022-11-25 17:18:12,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705747318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:12,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:12,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:18:12,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010481139] [2022-11-25 17:18:12,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:12,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:18:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:12,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:18:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:18:12,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 292 [2022-11-25 17:18:12,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:12,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:12,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 292 [2022-11-25 17:18:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:13,872 INFO L130 PetriNetUnfolder]: 5515/8780 cut-off events. [2022-11-25 17:18:13,873 INFO L131 PetriNetUnfolder]: For 31896/31964 co-relation queries the response was YES. [2022-11-25 17:18:13,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36438 conditions, 8780 events. 5515/8780 cut-off events. For 31896/31964 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 54649 event pairs, 2818 based on Foata normal form. 67/8812 useless extension candidates. Maximal degree in co-relation 36411. Up to 8513 conditions per place. [2022-11-25 17:18:13,993 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 72 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2022-11-25 17:18:13,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 78 transitions, 645 flow [2022-11-25 17:18:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:18:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:18:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-11-25 17:18:13,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5331050228310502 [2022-11-25 17:18:13,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-11-25 17:18:13,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-11-25 17:18:13,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:13,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-11-25 17:18:13,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:14,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:14,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:14,002 INFO L175 Difference]: Start difference. First operand has 95 places, 69 transitions, 458 flow. Second operand 3 states and 467 transitions. [2022-11-25 17:18:14,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 78 transitions, 645 flow [2022-11-25 17:18:14,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 628 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-25 17:18:14,426 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 426 flow [2022-11-25 17:18:14,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2022-11-25 17:18:14,427 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 29 predicate places. [2022-11-25 17:18:14,427 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 426 flow [2022-11-25 17:18:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:14,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:14,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:18:14,428 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1196161822, now seen corresponding path program 6 times [2022-11-25 17:18:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632283154] [2022-11-25 17:18:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:16,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632283154] [2022-11-25 17:18:16,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632283154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:16,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:16,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:18:16,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946557453] [2022-11-25 17:18:16,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:16,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:18:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:16,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:18:16,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:17,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:18:17,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 426 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:17,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:17,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:18:17,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:22,002 INFO L130 PetriNetUnfolder]: 10658/17122 cut-off events. [2022-11-25 17:18:22,003 INFO L131 PetriNetUnfolder]: For 50106/50106 co-relation queries the response was YES. [2022-11-25 17:18:22,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66554 conditions, 17122 events. 10658/17122 cut-off events. For 50106/50106 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 117263 event pairs, 1939 based on Foata normal form. 1/17123 useless extension candidates. Maximal degree in co-relation 66528. Up to 5667 conditions per place. [2022-11-25 17:18:22,187 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 247 selfloop transitions, 43 changer transitions 10/300 dead transitions. [2022-11-25 17:18:22,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 300 transitions, 2265 flow [2022-11-25 17:18:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:18:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:18:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1817 transitions. [2022-11-25 17:18:22,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44447162426614484 [2022-11-25 17:18:22,195 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1817 transitions. [2022-11-25 17:18:22,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1817 transitions. [2022-11-25 17:18:22,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:22,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1817 transitions. [2022-11-25 17:18:22,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.78571428571428) internal successors, (1817), 14 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:22,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:22,211 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:22,211 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 426 flow. Second operand 14 states and 1817 transitions. [2022-11-25 17:18:22,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 300 transitions, 2265 flow [2022-11-25 17:18:23,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 300 transitions, 2247 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:18:23,177 INFO L231 Difference]: Finished difference. Result has 115 places, 97 transitions, 911 flow [2022-11-25 17:18:23,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=911, PETRI_PLACES=115, PETRI_TRANSITIONS=97} [2022-11-25 17:18:23,180 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2022-11-25 17:18:23,181 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 97 transitions, 911 flow [2022-11-25 17:18:23,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:23,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:23,207 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:18:23,207 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash -712945940, now seen corresponding path program 7 times [2022-11-25 17:18:23,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:23,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691225079] [2022-11-25 17:18:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:26,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:26,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691225079] [2022-11-25 17:18:26,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691225079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:26,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:26,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:18:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945429127] [2022-11-25 17:18:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:26,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:18:26,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:26,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:18:26,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:26,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:18:26,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 97 transitions, 911 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:26,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:26,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:18:26,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:33,107 INFO L130 PetriNetUnfolder]: 13127/22123 cut-off events. [2022-11-25 17:18:33,107 INFO L131 PetriNetUnfolder]: For 133132/133132 co-relation queries the response was YES. [2022-11-25 17:18:33,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105370 conditions, 22123 events. 13127/22123 cut-off events. For 133132/133132 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 167663 event pairs, 2843 based on Foata normal form. 1/22124 useless extension candidates. Maximal degree in co-relation 105332. Up to 6274 conditions per place. [2022-11-25 17:18:33,304 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 278 selfloop transitions, 69 changer transitions 10/357 dead transitions. [2022-11-25 17:18:33,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 357 transitions, 3517 flow [2022-11-25 17:18:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:18:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:18:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1816 transitions. [2022-11-25 17:18:33,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2022-11-25 17:18:33,313 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1816 transitions. [2022-11-25 17:18:33,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1816 transitions. [2022-11-25 17:18:33,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:33,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1816 transitions. [2022-11-25 17:18:33,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.71428571428572) internal successors, (1816), 14 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:33,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:33,329 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:33,329 INFO L175 Difference]: Start difference. First operand has 115 places, 97 transitions, 911 flow. Second operand 14 states and 1816 transitions. [2022-11-25 17:18:33,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 357 transitions, 3517 flow [2022-11-25 17:18:34,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 357 transitions, 3465 flow, removed 26 selfloop flow, removed 1 redundant places. [2022-11-25 17:18:34,941 INFO L231 Difference]: Finished difference. Result has 139 places, 149 transitions, 1873 flow [2022-11-25 17:18:34,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1873, PETRI_PLACES=139, PETRI_TRANSITIONS=149} [2022-11-25 17:18:34,942 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 76 predicate places. [2022-11-25 17:18:34,942 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 149 transitions, 1873 flow [2022-11-25 17:18:34,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:34,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:34,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:18:34,944 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1813038182, now seen corresponding path program 8 times [2022-11-25 17:18:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:34,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095328952] [2022-11-25 17:18:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:35,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:35,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095328952] [2022-11-25 17:18:35,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095328952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:35,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:35,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:18:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846966125] [2022-11-25 17:18:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:35,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:18:35,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:18:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:18:35,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 292 [2022-11-25 17:18:35,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 149 transitions, 1873 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:35,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:35,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 292 [2022-11-25 17:18:35,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:39,719 INFO L130 PetriNetUnfolder]: 10225/17912 cut-off events. [2022-11-25 17:18:39,719 INFO L131 PetriNetUnfolder]: For 206263/206389 co-relation queries the response was YES. [2022-11-25 17:18:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106075 conditions, 17912 events. 10225/17912 cut-off events. For 206263/206389 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 141154 event pairs, 5432 based on Foata normal form. 60/17920 useless extension candidates. Maximal degree in co-relation 106025. Up to 17394 conditions per place. [2022-11-25 17:18:39,924 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 143 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-11-25 17:18:39,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 153 transitions, 2120 flow [2022-11-25 17:18:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:18:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:18:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-11-25 17:18:39,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5331050228310502 [2022-11-25 17:18:39,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-11-25 17:18:39,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-11-25 17:18:39,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:39,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-11-25 17:18:39,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:39,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:39,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:39,933 INFO L175 Difference]: Start difference. First operand has 139 places, 149 transitions, 1873 flow. Second operand 3 states and 467 transitions. [2022-11-25 17:18:39,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 153 transitions, 2120 flow [2022-11-25 17:18:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 2062 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-11-25 17:18:41,773 INFO L231 Difference]: Finished difference. Result has 138 places, 137 transitions, 1667 flow [2022-11-25 17:18:41,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1667, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-11-25 17:18:41,774 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 75 predicate places. [2022-11-25 17:18:41,775 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 1667 flow [2022-11-25 17:18:41,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:41,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:41,775 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:41,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:18:41,776 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2052697714, now seen corresponding path program 9 times [2022-11-25 17:18:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:41,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097341809] [2022-11-25 17:18:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:18:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:18:44,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:18:44,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097341809] [2022-11-25 17:18:44,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097341809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:18:44,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:18:44,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:18:44,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720464362] [2022-11-25 17:18:44,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:18:44,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:18:44,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:18:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:18:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:18:44,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:18:44,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 1667 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:44,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:18:44,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:18:44,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:18:54,844 INFO L130 PetriNetUnfolder]: 19160/34842 cut-off events. [2022-11-25 17:18:54,845 INFO L131 PetriNetUnfolder]: For 365640/365640 co-relation queries the response was YES. [2022-11-25 17:18:55,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194498 conditions, 34842 events. 19160/34842 cut-off events. For 365640/365640 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 317035 event pairs, 4129 based on Foata normal form. 1/34843 useless extension candidates. Maximal degree in co-relation 194448. Up to 9566 conditions per place. [2022-11-25 17:18:55,249 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 445 selfloop transitions, 81 changer transitions 10/536 dead transitions. [2022-11-25 17:18:55,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 536 transitions, 7115 flow [2022-11-25 17:18:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:18:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:18:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1815 transitions. [2022-11-25 17:18:55,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44398238747553814 [2022-11-25 17:18:55,256 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1815 transitions. [2022-11-25 17:18:55,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1815 transitions. [2022-11-25 17:18:55,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:18:55,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1815 transitions. [2022-11-25 17:18:55,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.64285714285714) internal successors, (1815), 14 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:55,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:55,272 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:55,272 INFO L175 Difference]: Start difference. First operand has 138 places, 137 transitions, 1667 flow. Second operand 14 states and 1815 transitions. [2022-11-25 17:18:55,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 536 transitions, 7115 flow [2022-11-25 17:18:59,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 536 transitions, 7085 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:18:59,822 INFO L231 Difference]: Finished difference. Result has 161 places, 198 transitions, 2946 flow [2022-11-25 17:18:59,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2946, PETRI_PLACES=161, PETRI_TRANSITIONS=198} [2022-11-25 17:18:59,823 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 98 predicate places. [2022-11-25 17:18:59,823 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 198 transitions, 2946 flow [2022-11-25 17:18:59,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:18:59,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:18:59,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:18:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:18:59,824 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:18:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:18:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash -901957432, now seen corresponding path program 10 times [2022-11-25 17:18:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:18:59,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648409697] [2022-11-25 17:18:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:18:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:18:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:01,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:01,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648409697] [2022-11-25 17:19:01,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648409697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:01,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:01,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:19:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179128000] [2022-11-25 17:19:01,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:01,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:19:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:01,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:19:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:19:02,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:19:02,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 2946 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:02,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:02,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:19:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:19:16,702 INFO L130 PetriNetUnfolder]: 24454/46370 cut-off events. [2022-11-25 17:19:16,702 INFO L131 PetriNetUnfolder]: For 670291/670291 co-relation queries the response was YES. [2022-11-25 17:19:17,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289612 conditions, 46370 events. 24454/46370 cut-off events. For 670291/670291 co-relation queries the response was YES. Maximal size of possible extension queue 2606. Compared 463946 event pairs, 7037 based on Foata normal form. 1/46371 useless extension candidates. Maximal degree in co-relation 289550. Up to 16446 conditions per place. [2022-11-25 17:19:17,189 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 430 selfloop transitions, 72 changer transitions 9/511 dead transitions. [2022-11-25 17:19:17,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 511 transitions, 7297 flow [2022-11-25 17:19:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:19:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:19:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1818 transitions. [2022-11-25 17:19:17,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44471624266144816 [2022-11-25 17:19:17,196 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1818 transitions. [2022-11-25 17:19:17,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1818 transitions. [2022-11-25 17:19:17,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:19:17,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1818 transitions. [2022-11-25 17:19:17,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.85714285714286) internal successors, (1818), 14 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:17,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:17,212 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:17,212 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 2946 flow. Second operand 14 states and 1818 transitions. [2022-11-25 17:19:17,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 511 transitions, 7297 flow [2022-11-25 17:19:29,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 511 transitions, 7047 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-11-25 17:19:29,762 INFO L231 Difference]: Finished difference. Result has 183 places, 254 transitions, 4116 flow [2022-11-25 17:19:29,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4116, PETRI_PLACES=183, PETRI_TRANSITIONS=254} [2022-11-25 17:19:29,763 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 120 predicate places. [2022-11-25 17:19:29,763 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 254 transitions, 4116 flow [2022-11-25 17:19:29,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:29,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:19:29,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:19:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:19:29,764 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:19:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:19:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash 812891726, now seen corresponding path program 11 times [2022-11-25 17:19:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:19:29,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35376037] [2022-11-25 17:19:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:19:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:19:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:19:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:19:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:19:32,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35376037] [2022-11-25 17:19:32,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35376037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:19:32,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:19:32,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:19:32,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190392382] [2022-11-25 17:19:32,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:19:32,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:19:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:19:32,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:19:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:19:32,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 292 [2022-11-25 17:19:32,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 254 transitions, 4116 flow. Second operand has 14 states, 14 states have (on average 117.35714285714286) internal successors, (1643), 14 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:19:32,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:19:32,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 292 [2022-11-25 17:19:32,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand