./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --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_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/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_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/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_9086f513-472e-4675-a051-1863168ca5d5/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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- 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 17:13:58,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:13:58,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:13:58,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:13:58,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:13:58,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:13:58,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:13:59,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:13:59,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:13:59,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:13:59,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:13:59,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:13:59,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:13:59,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:13:59,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:13:59,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:13:59,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:13:59,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:13:59,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:13:59,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:13:59,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:13:59,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:13:59,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:13:59,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:13:59,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:13:59,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:13:59,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:13:59,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:13:59,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:13:59,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:13:59,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:13:59,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:13:59,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:13:59,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:13:59,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:13:59,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:13:59,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:13:59,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:13:59,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:13:59,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:13:59,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:13:59,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:13:59,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:13:59,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:13:59,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:13:59,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:13:59,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:13:59,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:13:59,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:13:59,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:13:59,121 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:13:59,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:13:59,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:13:59,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:13:59,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:13:59,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:13:59,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:13:59,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:13:59,124 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:13:59,125 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:13:59,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:13:59,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:13:59,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:13:59,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:13:59,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:13:59,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:13:59,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:13:59,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:13:59,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:13:59,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:13:59,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:13:59,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:13:59,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:13:59,128 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:13:59,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:13:59,129 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_9086f513-472e-4675-a051-1863168ca5d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-11-25 17:13:59,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:13:59,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:13:59,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:13:59,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:13:59,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:13:59,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:14:02,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:14:03,180 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:14:03,181 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:14:03,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/data/628c138c9/17ae8c2d7c1c487796eeb3e7f2dbce74/FLAGe465c74ff [2022-11-25 17:14:03,213 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/data/628c138c9/17ae8c2d7c1c487796eeb3e7f2dbce74 [2022-11-25 17:14:03,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:14:03,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:14:03,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:14:03,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:14:03,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:14:03,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c98fe86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03, skipping insertion in model container [2022-11-25 17:14:03,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:14:03,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:14:03,469 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_9086f513-472e-4675-a051-1863168ca5d5/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 17:14:03,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:14:03,731 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:14:03,748 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_9086f513-472e-4675-a051-1863168ca5d5/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 17:14:03,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:14:03,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:14:03,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:14:03,832 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:14:03,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03 WrapperNode [2022-11-25 17:14:03,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:14:03,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:14:03,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:14:03,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:14:03,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,920 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-25 17:14:03,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:14:03,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:14:03,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:14:03,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:14:03,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:03,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:14:03,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:14:03,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:14:03,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:14:03,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (1/1) ... [2022-11-25 17:14:04,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:14:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:04,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:14:04,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:14:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:14:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:14:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:14:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:14:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:14:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 17:14:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 17:14:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 17:14:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 17:14:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 17:14:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 17:14:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-25 17:14:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-25 17:14:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:14:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:14:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:14:04,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:14:04,074 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 17:14:04,292 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:14:04,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:14:04,515 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:14:04,522 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:14:04,522 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:14:04,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:04 BoogieIcfgContainer [2022-11-25 17:14:04,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:14:04,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:14:04,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:14:04,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:14:04,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:14:03" (1/3) ... [2022-11-25 17:14:04,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b03bbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:14:04, skipping insertion in model container [2022-11-25 17:14:04,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:14:03" (2/3) ... [2022-11-25 17:14:04,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b03bbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:14:04, skipping insertion in model container [2022-11-25 17:14:04,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:04" (3/3) ... [2022-11-25 17:14:04,546 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 17:14:04,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:14:04,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 17:14:04,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:14:04,668 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:14:04,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 118 transitions, 256 flow [2022-11-25 17:14:04,782 INFO L130 PetriNetUnfolder]: 2/114 cut-off events. [2022-11-25 17:14:04,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:14:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 2/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-11-25 17:14:04,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 118 transitions, 256 flow [2022-11-25 17:14:04,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 109 transitions, 230 flow [2022-11-25 17:14:04,800 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:14:04,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 109 transitions, 230 flow [2022-11-25 17:14:04,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 109 transitions, 230 flow [2022-11-25 17:14:04,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 109 transitions, 230 flow [2022-11-25 17:14:04,859 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-11-25 17:14:04,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:14:04,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-25 17:14:04,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 2382 [2022-11-25 17:14:09,479 INFO L134 LiptonReduction]: Checked pairs total: 4150 [2022-11-25 17:14:09,480 INFO L136 LiptonReduction]: Total number of compositions: 119 [2022-11-25 17:14:09,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:14:09,511 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;@1b9b8ae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:14:09,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-25 17:14:09,514 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 17:14:09,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:14:09,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:09,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:14:09,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 415, now seen corresponding path program 1 times [2022-11-25 17:14:09,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:09,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84478443] [2022-11-25 17:14:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:09,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:09,675 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 17:14:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:09,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84478443] [2022-11-25 17:14:09,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84478443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:09,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:09,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:14:09,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524774949] [2022-11-25 17:14:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:09,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:14:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:14:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:14:09,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 237 [2022-11-25 17:14:09,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:09,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:09,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 237 [2022-11-25 17:14:09,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:09,969 INFO L130 PetriNetUnfolder]: 920/1342 cut-off events. [2022-11-25 17:14:09,969 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-25 17:14:09,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 1342 events. 920/1342 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5813 event pairs, 920 based on Foata normal form. 0/1251 useless extension candidates. Maximal degree in co-relation 2739. Up to 1324 conditions per place. [2022-11-25 17:14:09,982 INFO L137 encePairwiseOnDemand]: 229/237 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2022-11-25 17:14:09,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 21 transitions, 92 flow [2022-11-25 17:14:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:14:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:14:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2022-11-25 17:14:09,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5253164556962026 [2022-11-25 17:14:09,997 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 249 transitions. [2022-11-25 17:14:09,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 249 transitions. [2022-11-25 17:14:09,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:10,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 249 transitions. [2022-11-25 17:14:10,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:10,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 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 17:14:10,011 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 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 17:14:10,013 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 2 states and 249 transitions. [2022-11-25 17:14:10,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 21 transitions, 92 flow [2022-11-25 17:14:10,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:14:10,018 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 50 flow [2022-11-25 17:14:10,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2022-11-25 17:14:10,024 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2022-11-25 17:14:10,024 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 50 flow [2022-11-25 17:14:10,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:10,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:10,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:10,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:14:10,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash -340269270, now seen corresponding path program 1 times [2022-11-25 17:14:10,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:10,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38755143] [2022-11-25 17:14:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:10,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:10,534 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 17:14:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:10,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38755143] [2022-11-25 17:14:10,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38755143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:10,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:10,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:14:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838806842] [2022-11-25 17:14:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:10,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:14:10,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:14:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:14:10,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2022-11-25 17:14:10,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 17:14:10,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:10,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2022-11-25 17:14:10,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:10,974 INFO L130 PetriNetUnfolder]: 2464/3535 cut-off events. [2022-11-25 17:14:10,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:14:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 3535 events. 2464/3535 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16593 event pairs, 969 based on Foata normal form. 0/3400 useless extension candidates. Maximal degree in co-relation 7236. Up to 2309 conditions per place. [2022-11-25 17:14:11,044 INFO L137 encePairwiseOnDemand]: 229/237 looper letters, 32 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2022-11-25 17:14:11,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 170 flow [2022-11-25 17:14:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:14:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:14:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-11-25 17:14:11,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4866385372714487 [2022-11-25 17:14:11,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-11-25 17:14:11,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-11-25 17:14:11,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:11,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-11-25 17:14:11,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:11,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 17:14:11,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 17:14:11,060 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 50 flow. Second operand 3 states and 346 transitions. [2022-11-25 17:14:11,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 170 flow [2022-11-25 17:14:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:14:11,062 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 104 flow [2022-11-25 17:14:11,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2022-11-25 17:14:11,066 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2022-11-25 17:14:11,066 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 104 flow [2022-11-25 17:14:11,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 17:14:11,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:11,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:11,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:14:11,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash -340269268, now seen corresponding path program 1 times [2022-11-25 17:14:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:11,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896948876] [2022-11-25 17:14:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:11,952 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 17:14:11,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:11,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896948876] [2022-11-25 17:14:11,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896948876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:11,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:11,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:14:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506466122] [2022-11-25 17:14:11,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:12,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 237 [2022-11-25 17:14:12,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 17:14:12,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:12,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 237 [2022-11-25 17:14:12,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:12,748 INFO L130 PetriNetUnfolder]: 1779/2711 cut-off events. [2022-11-25 17:14:12,749 INFO L131 PetriNetUnfolder]: For 1051/1051 co-relation queries the response was YES. [2022-11-25 17:14:12,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 2711 events. 1779/2711 cut-off events. For 1051/1051 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 13586 event pairs, 342 based on Foata normal form. 57/2720 useless extension candidates. Maximal degree in co-relation 6924. Up to 2135 conditions per place. [2022-11-25 17:14:12,772 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 38 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2022-11-25 17:14:12,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 274 flow [2022-11-25 17:14:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:14:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 605 transitions. [2022-11-25 17:14:12,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42545710267229253 [2022-11-25 17:14:12,775 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 605 transitions. [2022-11-25 17:14:12,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 605 transitions. [2022-11-25 17:14:12,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:12,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 605 transitions. [2022-11-25 17:14:12,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 0 states have call successors, (0), 0 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 17:14:12,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 17:14:12,781 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 17:14:12,781 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 104 flow. Second operand 6 states and 605 transitions. [2022-11-25 17:14:12,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 274 flow [2022-11-25 17:14:12,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:14:12,828 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 131 flow [2022-11-25 17:14:12,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2022-11-25 17:14:12,829 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-11-25 17:14:12,829 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 131 flow [2022-11-25 17:14:12,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 17:14:12,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:12,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:12,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:14:12,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:12,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1958415740, now seen corresponding path program 1 times [2022-11-25 17:14:12,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:12,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528808533] [2022-11-25 17:14:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:12,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:12,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:12,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528808533] [2022-11-25 17:14:12,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528808533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:12,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:12,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:14:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107066854] [2022-11-25 17:14:12,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:12,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:14:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:14:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:14:12,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2022-11-25 17:14:12,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 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 17:14:12,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:12,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2022-11-25 17:14:12,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:13,337 INFO L130 PetriNetUnfolder]: 2091/3021 cut-off events. [2022-11-25 17:14:13,338 INFO L131 PetriNetUnfolder]: For 934/934 co-relation queries the response was YES. [2022-11-25 17:14:13,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 3021 events. 2091/3021 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13338 event pairs, 245 based on Foata normal form. 0/2931 useless extension candidates. Maximal degree in co-relation 7967. Up to 1608 conditions per place. [2022-11-25 17:14:13,358 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 44 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2022-11-25 17:14:13,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 320 flow [2022-11-25 17:14:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:14:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:14:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-11-25 17:14:13,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.479957805907173 [2022-11-25 17:14:13,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-11-25 17:14:13,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-11-25 17:14:13,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:13,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-11-25 17:14:13,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:13,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:13,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:13,366 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 131 flow. Second operand 4 states and 455 transitions. [2022-11-25 17:14:13,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 320 flow [2022-11-25 17:14:13,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 310 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:14:13,369 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 204 flow [2022-11-25 17:14:13,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-11-25 17:14:13,371 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2022-11-25 17:14:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 204 flow [2022-11-25 17:14:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 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 17:14:13,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:13,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:14:13,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1958488278, now seen corresponding path program 1 times [2022-11-25 17:14:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:13,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177265143] [2022-11-25 17:14:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:14,098 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 17:14:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:14,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177265143] [2022-11-25 17:14:14,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177265143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:14,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:14,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:14:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221992834] [2022-11-25 17:14:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:14,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 237 [2022-11-25 17:14:14,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 17:14:14,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:14,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 237 [2022-11-25 17:14:14,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:15,136 INFO L130 PetriNetUnfolder]: 2125/3195 cut-off events. [2022-11-25 17:14:15,136 INFO L131 PetriNetUnfolder]: For 5214/5441 co-relation queries the response was YES. [2022-11-25 17:14:15,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9151 conditions, 3195 events. 2125/3195 cut-off events. For 5214/5441 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 17363 event pairs, 521 based on Foata normal form. 425/3501 useless extension candidates. Maximal degree in co-relation 9142. Up to 1635 conditions per place. [2022-11-25 17:14:15,161 INFO L137 encePairwiseOnDemand]: 229/237 looper letters, 52 selfloop transitions, 8 changer transitions 24/91 dead transitions. [2022-11-25 17:14:15,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 620 flow [2022-11-25 17:14:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:14:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:14:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 766 transitions. [2022-11-25 17:14:15,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4040084388185654 [2022-11-25 17:14:15,165 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 766 transitions. [2022-11-25 17:14:15,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 766 transitions. [2022-11-25 17:14:15,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:15,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 766 transitions. [2022-11-25 17:14:15,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 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 17:14:15,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 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 17:14:15,173 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 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 17:14:15,173 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 204 flow. Second operand 8 states and 766 transitions. [2022-11-25 17:14:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 620 flow [2022-11-25 17:14:15,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:14:15,188 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 280 flow [2022-11-25 17:14:15,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2022-11-25 17:14:15,189 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2022-11-25 17:14:15,189 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 280 flow [2022-11-25 17:14:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 17:14:15,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:15,190 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:15,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:14:15,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2038329811, now seen corresponding path program 1 times [2022-11-25 17:14:15,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714229193] [2022-11-25 17:14:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:15,779 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 17:14:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:15,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714229193] [2022-11-25 17:14:15,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714229193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:15,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:15,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:14:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025912182] [2022-11-25 17:14:15,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:15,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:16,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 237 [2022-11-25 17:14:16,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 280 flow. Second operand has 7 states, 7 states have (on average 90.85714285714286) internal successors, (636), 7 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 17:14:16,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:16,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 237 [2022-11-25 17:14:16,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:16,716 INFO L130 PetriNetUnfolder]: 1768/2722 cut-off events. [2022-11-25 17:14:16,716 INFO L131 PetriNetUnfolder]: For 8734/8901 co-relation queries the response was YES. [2022-11-25 17:14:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 2722 events. 1768/2722 cut-off events. For 8734/8901 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14524 event pairs, 749 based on Foata normal form. 270/2878 useless extension candidates. Maximal degree in co-relation 8703. Up to 1494 conditions per place. [2022-11-25 17:14:16,742 INFO L137 encePairwiseOnDemand]: 229/237 looper letters, 35 selfloop transitions, 6 changer transitions 26/74 dead transitions. [2022-11-25 17:14:16,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 552 flow [2022-11-25 17:14:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:14:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:14:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 764 transitions. [2022-11-25 17:14:16,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4029535864978903 [2022-11-25 17:14:16,745 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 764 transitions. [2022-11-25 17:14:16,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 764 transitions. [2022-11-25 17:14:16,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:16,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 764 transitions. [2022-11-25 17:14:16,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:16,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 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 17:14:16,752 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 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 17:14:16,752 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 280 flow. Second operand 8 states and 764 transitions. [2022-11-25 17:14:16,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 552 flow [2022-11-25 17:14:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 528 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-25 17:14:16,769 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 279 flow [2022-11-25 17:14:16,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2022-11-25 17:14:16,772 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2022-11-25 17:14:16,772 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 279 flow [2022-11-25 17:14:16,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.85714285714286) internal successors, (636), 7 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 17:14:16,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:16,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:16,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:14:16,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1964650930, now seen corresponding path program 1 times [2022-11-25 17:14:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:16,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883305861] [2022-11-25 17:14:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:17,241 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 17:14:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:17,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883305861] [2022-11-25 17:14:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883305861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:17,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:17,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:14:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878946835] [2022-11-25 17:14:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:17,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:17,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:17,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 237 [2022-11-25 17:14:17,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 17:14:17,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:17,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 237 [2022-11-25 17:14:17,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:17,724 INFO L130 PetriNetUnfolder]: 788/1262 cut-off events. [2022-11-25 17:14:17,724 INFO L131 PetriNetUnfolder]: For 3210/3220 co-relation queries the response was YES. [2022-11-25 17:14:17,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 1262 events. 788/1262 cut-off events. For 3210/3220 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5798 event pairs, 310 based on Foata normal form. 118/1340 useless extension candidates. Maximal degree in co-relation 3885. Up to 1024 conditions per place. [2022-11-25 17:14:17,735 INFO L137 encePairwiseOnDemand]: 232/237 looper letters, 35 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2022-11-25 17:14:17,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 349 flow [2022-11-25 17:14:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:14:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 589 transitions. [2022-11-25 17:14:17,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4142053445850914 [2022-11-25 17:14:17,738 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 589 transitions. [2022-11-25 17:14:17,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 589 transitions. [2022-11-25 17:14:17,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:17,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 589 transitions. [2022-11-25 17:14:17,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 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 17:14:17,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 17:14:17,743 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 17:14:17,744 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 279 flow. Second operand 6 states and 589 transitions. [2022-11-25 17:14:17,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 349 flow [2022-11-25 17:14:17,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 323 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-25 17:14:17,749 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 212 flow [2022-11-25 17:14:17,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2022-11-25 17:14:17,751 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2022-11-25 17:14:17,752 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 212 flow [2022-11-25 17:14:17,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 17:14:17,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:17,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:14:17,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash 774634902, now seen corresponding path program 1 times [2022-11-25 17:14:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677338654] [2022-11-25 17:14:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:17,888 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 17:14:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677338654] [2022-11-25 17:14:17,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677338654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:17,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:17,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:14:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450680340] [2022-11-25 17:14:17,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:17,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:14:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:17,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:14:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:14:17,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2022-11-25 17:14:17,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 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 17:14:17,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:17,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2022-11-25 17:14:17,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:18,110 INFO L130 PetriNetUnfolder]: 993/1498 cut-off events. [2022-11-25 17:14:18,111 INFO L131 PetriNetUnfolder]: For 1462/1462 co-relation queries the response was YES. [2022-11-25 17:14:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4571 conditions, 1498 events. 993/1498 cut-off events. For 1462/1462 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6175 event pairs, 253 based on Foata normal form. 12/1510 useless extension candidates. Maximal degree in co-relation 4557. Up to 968 conditions per place. [2022-11-25 17:14:18,128 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 55 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2022-11-25 17:14:18,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 482 flow [2022-11-25 17:14:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:14:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:14:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 452 transitions. [2022-11-25 17:14:18,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4767932489451477 [2022-11-25 17:14:18,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 452 transitions. [2022-11-25 17:14:18,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 452 transitions. [2022-11-25 17:14:18,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:18,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 452 transitions. [2022-11-25 17:14:18,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.0) internal successors, (452), 4 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 17:14:18,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:18,136 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:18,136 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 212 flow. Second operand 4 states and 452 transitions. [2022-11-25 17:14:18,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 482 flow [2022-11-25 17:14:18,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:14:18,141 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 263 flow [2022-11-25 17:14:18,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2022-11-25 17:14:18,145 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2022-11-25 17:14:18,145 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 263 flow [2022-11-25 17:14:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 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 17:14:18,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:18,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:14:18,146 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1685378560, now seen corresponding path program 1 times [2022-11-25 17:14:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404558141] [2022-11-25 17:14:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:18,257 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 17:14:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:18,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404558141] [2022-11-25 17:14:18,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404558141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:18,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:18,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:14:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754522438] [2022-11-25 17:14:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:18,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:14:18,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:18,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:14:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:14:18,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 237 [2022-11-25 17:14:18,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 17:14:18,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:18,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 237 [2022-11-25 17:14:18,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:18,521 INFO L130 PetriNetUnfolder]: 1146/1806 cut-off events. [2022-11-25 17:14:18,521 INFO L131 PetriNetUnfolder]: For 3193/3193 co-relation queries the response was YES. [2022-11-25 17:14:18,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5654 conditions, 1806 events. 1146/1806 cut-off events. For 3193/3193 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8688 event pairs, 287 based on Foata normal form. 42/1817 useless extension candidates. Maximal degree in co-relation 5638. Up to 772 conditions per place. [2022-11-25 17:14:18,537 INFO L137 encePairwiseOnDemand]: 232/237 looper letters, 39 selfloop transitions, 6 changer transitions 10/57 dead transitions. [2022-11-25 17:14:18,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 456 flow [2022-11-25 17:14:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:14:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:14:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2022-11-25 17:14:18,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49050632911392406 [2022-11-25 17:14:18,540 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2022-11-25 17:14:18,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2022-11-25 17:14:18,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:18,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2022-11-25 17:14:18,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 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 17:14:18,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:18,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:18,546 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 263 flow. Second operand 4 states and 465 transitions. [2022-11-25 17:14:18,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 456 flow [2022-11-25 17:14:18,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:14:18,558 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 238 flow [2022-11-25 17:14:18,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2022-11-25 17:14:18,559 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2022-11-25 17:14:18,560 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 238 flow [2022-11-25 17:14:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 17:14:18,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:18,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:14:18,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1756186125, now seen corresponding path program 1 times [2022-11-25 17:14:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:18,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46227596] [2022-11-25 17:14:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:18,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:18,697 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 17:14:18,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:18,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46227596] [2022-11-25 17:14:18,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46227596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:18,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:18,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:14:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337244325] [2022-11-25 17:14:18,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:18,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:14:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:14:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:14:18,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2022-11-25 17:14:18,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 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 17:14:18,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:18,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2022-11-25 17:14:18,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:18,917 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2022-11-25 17:14:18,917 INFO L131 PetriNetUnfolder]: For 2187/2187 co-relation queries the response was YES. [2022-11-25 17:14:18,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 1195 events. 770/1195 cut-off events. For 2187/2187 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5007 event pairs, 129 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3760. Up to 600 conditions per place. [2022-11-25 17:14:18,926 INFO L137 encePairwiseOnDemand]: 232/237 looper letters, 37 selfloop transitions, 8 changer transitions 1/46 dead transitions. [2022-11-25 17:14:18,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 365 flow [2022-11-25 17:14:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:14:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:14:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2022-11-25 17:14:18,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4704641350210971 [2022-11-25 17:14:18,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2022-11-25 17:14:18,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2022-11-25 17:14:18,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:18,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2022-11-25 17:14:18,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 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 17:14:18,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:18,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:18,958 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 238 flow. Second operand 4 states and 446 transitions. [2022-11-25 17:14:18,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 365 flow [2022-11-25 17:14:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 336 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-25 17:14:18,964 INFO L231 Difference]: Finished difference. Result has 56 places, 33 transitions, 223 flow [2022-11-25 17:14:18,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=56, PETRI_TRANSITIONS=33} [2022-11-25 17:14:18,966 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2022-11-25 17:14:18,966 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 33 transitions, 223 flow [2022-11-25 17:14:18,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 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 17:14:18,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:18,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:18,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:14:18,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1686412720, now seen corresponding path program 2 times [2022-11-25 17:14:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:18,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596844539] [2022-11-25 17:14:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:19,082 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 17:14:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:19,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596844539] [2022-11-25 17:14:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596844539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:19,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:19,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:14:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103151045] [2022-11-25 17:14:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:19,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:14:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:14:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:14:19,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 237 [2022-11-25 17:14:19,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 33 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 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 17:14:19,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:19,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 237 [2022-11-25 17:14:19,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:19,279 INFO L130 PetriNetUnfolder]: 604/1015 cut-off events. [2022-11-25 17:14:19,279 INFO L131 PetriNetUnfolder]: For 2038/2049 co-relation queries the response was YES. [2022-11-25 17:14:19,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1015 events. 604/1015 cut-off events. For 2038/2049 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5104 event pairs, 206 based on Foata normal form. 45/1010 useless extension candidates. Maximal degree in co-relation 3036. Up to 670 conditions per place. [2022-11-25 17:14:19,287 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 57 selfloop transitions, 9 changer transitions 9/79 dead transitions. [2022-11-25 17:14:19,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 659 flow [2022-11-25 17:14:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:14:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:14:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-25 17:14:19,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48438818565400843 [2022-11-25 17:14:19,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-25 17:14:19,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-25 17:14:19,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:19,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-25 17:14:19,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 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 17:14:19,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 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 17:14:19,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 0 states have call successors, (0), 0 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 17:14:19,295 INFO L175 Difference]: Start difference. First operand has 56 places, 33 transitions, 223 flow. Second operand 5 states and 574 transitions. [2022-11-25 17:14:19,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 659 flow [2022-11-25 17:14:19,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 578 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-25 17:14:19,300 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 261 flow [2022-11-25 17:14:19,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2022-11-25 17:14:19,301 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2022-11-25 17:14:19,301 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 261 flow [2022-11-25 17:14:19,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 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 17:14:19,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:19,302 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:19,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:14:19,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1359552868, now seen corresponding path program 1 times [2022-11-25 17:14:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:19,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928655538] [2022-11-25 17:14:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:19,433 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 17:14:19,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:19,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928655538] [2022-11-25 17:14:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928655538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:19,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:19,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:14:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638785443] [2022-11-25 17:14:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:14:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:14:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:14:19,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 237 [2022-11-25 17:14:19,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 17:14:19,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:19,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 237 [2022-11-25 17:14:19,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:19,732 INFO L130 PetriNetUnfolder]: 582/997 cut-off events. [2022-11-25 17:14:19,732 INFO L131 PetriNetUnfolder]: For 2619/2936 co-relation queries the response was YES. [2022-11-25 17:14:19,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 997 events. 582/997 cut-off events. For 2619/2936 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5325 event pairs, 49 based on Foata normal form. 92/1035 useless extension candidates. Maximal degree in co-relation 4141. Up to 663 conditions per place. [2022-11-25 17:14:19,740 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 51 selfloop transitions, 9 changer transitions 37/101 dead transitions. [2022-11-25 17:14:19,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 822 flow [2022-11-25 17:14:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:14:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:14:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-11-25 17:14:19,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48342374924653403 [2022-11-25 17:14:19,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2022-11-25 17:14:19,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2022-11-25 17:14:19,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:19,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2022-11-25 17:14:19,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 0 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 17:14:19,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 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 17:14:19,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 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 17:14:19,754 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 261 flow. Second operand 7 states and 802 transitions. [2022-11-25 17:14:19,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 822 flow [2022-11-25 17:14:19,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 805 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:14:19,768 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 298 flow [2022-11-25 17:14:19,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2022-11-25 17:14:19,770 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2022-11-25 17:14:19,770 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 298 flow [2022-11-25 17:14:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 17:14:19,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:19,771 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:19,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:14:19,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash 173766281, now seen corresponding path program 1 times [2022-11-25 17:14:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:19,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719931668] [2022-11-25 17:14:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:19,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:14:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719931668] [2022-11-25 17:14:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719931668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:19,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:19,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:14:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930349949] [2022-11-25 17:14:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:19,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:14:19,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 237 [2022-11-25 17:14:19,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 17:14:19,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:19,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 237 [2022-11-25 17:14:19,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:20,149 INFO L130 PetriNetUnfolder]: 279/508 cut-off events. [2022-11-25 17:14:20,150 INFO L131 PetriNetUnfolder]: For 2043/2245 co-relation queries the response was YES. [2022-11-25 17:14:20,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 508 events. 279/508 cut-off events. For 2043/2245 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2358 event pairs, 9 based on Foata normal form. 67/551 useless extension candidates. Maximal degree in co-relation 2621. Up to 341 conditions per place. [2022-11-25 17:14:20,154 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 56 selfloop transitions, 13 changer transitions 18/91 dead transitions. [2022-11-25 17:14:20,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 820 flow [2022-11-25 17:14:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:14:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:14:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-11-25 17:14:20,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48342374924653403 [2022-11-25 17:14:20,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2022-11-25 17:14:20,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2022-11-25 17:14:20,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:20,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2022-11-25 17:14:20,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 0 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 17:14:20,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 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 17:14:20,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 0 states have call successors, (0), 0 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 17:14:20,164 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 298 flow. Second operand 7 states and 802 transitions. [2022-11-25 17:14:20,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 820 flow [2022-11-25 17:14:20,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 756 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-11-25 17:14:20,175 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 346 flow [2022-11-25 17:14:20,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2022-11-25 17:14:20,176 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2022-11-25 17:14:20,176 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 346 flow [2022-11-25 17:14:20,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 17:14:20,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:20,177 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:14:20,177 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1951792291, now seen corresponding path program 1 times [2022-11-25 17:14:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886225140] [2022-11-25 17:14:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:20,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:20,296 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 17:14:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:20,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886225140] [2022-11-25 17:14:20,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886225140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:20,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:20,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:14:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93153444] [2022-11-25 17:14:20,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:20,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:14:20,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:14:20,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:14:20,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2022-11-25 17:14:20,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 17:14:20,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:20,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2022-11-25 17:14:20,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:20,465 INFO L130 PetriNetUnfolder]: 312/556 cut-off events. [2022-11-25 17:14:20,466 INFO L131 PetriNetUnfolder]: For 1898/1898 co-relation queries the response was YES. [2022-11-25 17:14:20,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 556 events. 312/556 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2216 event pairs, 34 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2728. Up to 264 conditions per place. [2022-11-25 17:14:20,471 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 45 selfloop transitions, 7 changer transitions 46/98 dead transitions. [2022-11-25 17:14:20,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 990 flow [2022-11-25 17:14:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:14:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 663 transitions. [2022-11-25 17:14:20,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46624472573839665 [2022-11-25 17:14:20,476 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 663 transitions. [2022-11-25 17:14:20,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 663 transitions. [2022-11-25 17:14:20,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:20,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 663 transitions. [2022-11-25 17:14:20,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 17:14:20,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 17:14:20,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 17:14:20,482 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 346 flow. Second operand 6 states and 663 transitions. [2022-11-25 17:14:20,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 990 flow [2022-11-25 17:14:20,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 808 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-25 17:14:20,492 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 290 flow [2022-11-25 17:14:20,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2022-11-25 17:14:20,493 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2022-11-25 17:14:20,493 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 290 flow [2022-11-25 17:14:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 17:14:20,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:20,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:20,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:14:20,494 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:20,495 INFO L85 PathProgramCache]: Analyzing trace with hash 580865587, now seen corresponding path program 1 times [2022-11-25 17:14:20,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:20,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744638756] [2022-11-25 17:14:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:20,633 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 17:14:20,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:20,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744638756] [2022-11-25 17:14:20,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744638756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:20,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:20,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:14:20,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733370200] [2022-11-25 17:14:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:20,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:14:20,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:14:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:14:20,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 237 [2022-11-25 17:14:20,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 17:14:20,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:20,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 237 [2022-11-25 17:14:20,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:20,814 INFO L130 PetriNetUnfolder]: 127/253 cut-off events. [2022-11-25 17:14:20,814 INFO L131 PetriNetUnfolder]: For 724/825 co-relation queries the response was YES. [2022-11-25 17:14:20,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 253 events. 127/253 cut-off events. For 724/825 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 941 event pairs, 2 based on Foata normal form. 51/295 useless extension candidates. Maximal degree in co-relation 1080. Up to 88 conditions per place. [2022-11-25 17:14:20,816 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 33 selfloop transitions, 17 changer transitions 18/70 dead transitions. [2022-11-25 17:14:20,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 623 flow [2022-11-25 17:14:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:14:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:14:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 895 transitions. [2022-11-25 17:14:20,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4720464135021097 [2022-11-25 17:14:20,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 895 transitions. [2022-11-25 17:14:20,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 895 transitions. [2022-11-25 17:14:20,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:20,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 895 transitions. [2022-11-25 17:14:20,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.875) internal successors, (895), 8 states have internal predecessors, (895), 0 states have call successors, (0), 0 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 17:14:20,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 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 17:14:20,827 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 237.0) internal successors, (2133), 9 states have internal predecessors, (2133), 0 states have call successors, (0), 0 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 17:14:20,827 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 290 flow. Second operand 8 states and 895 transitions. [2022-11-25 17:14:20,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 623 flow [2022-11-25 17:14:20,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 569 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-25 17:14:20,832 INFO L231 Difference]: Finished difference. Result has 66 places, 38 transitions, 280 flow [2022-11-25 17:14:20,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=66, PETRI_TRANSITIONS=38} [2022-11-25 17:14:20,833 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2022-11-25 17:14:20,834 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 38 transitions, 280 flow [2022-11-25 17:14:20,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 17:14:20,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:20,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:20,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:14:20,835 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 17:14:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash -622826699, now seen corresponding path program 1 times [2022-11-25 17:14:20,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:20,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282514811] [2022-11-25 17:14:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:20,956 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 17:14:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282514811] [2022-11-25 17:14:20,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282514811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:20,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:20,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:14:20,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799907432] [2022-11-25 17:14:20,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:20,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:14:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:14:20,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:14:20,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 237 [2022-11-25 17:14:20,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 38 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 17:14:20,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:20,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 237 [2022-11-25 17:14:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:21,031 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2022-11-25 17:14:21,031 INFO L131 PetriNetUnfolder]: For 376/378 co-relation queries the response was YES. [2022-11-25 17:14:21,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 131 events. 66/131 cut-off events. For 376/378 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 316 event pairs, 19 based on Foata normal form. 3/132 useless extension candidates. Maximal degree in co-relation 595. Up to 80 conditions per place. [2022-11-25 17:14:21,033 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2022-11-25 17:14:21,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 437 flow [2022-11-25 17:14:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:14:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:14:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2022-11-25 17:14:21,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2022-11-25 17:14:21,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2022-11-25 17:14:21,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2022-11-25 17:14:21,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:21,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2022-11-25 17:14:21,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 17:14:21,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:21,040 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 17:14:21,040 INFO L175 Difference]: Start difference. First operand has 66 places, 38 transitions, 280 flow. Second operand 4 states and 454 transitions. [2022-11-25 17:14:21,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 48 transitions, 437 flow [2022-11-25 17:14:21,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 358 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-25 17:14:21,045 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2022-11-25 17:14:21,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2022-11-25 17:14:21,045 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2022-11-25 17:14:21,045 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2022-11-25 17:14:21,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 17:14:21,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-11-25 17:14:21,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-11-25 17:14:21,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-11-25 17:14:21,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-11-25 17:14:21,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-11-25 17:14:21,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-11-25 17:14:21,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-11-25 17:14:21,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-11-25 17:14:21,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2022-11-25 17:14:21,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2022-11-25 17:14:21,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2022-11-25 17:14:21,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2022-11-25 17:14:21,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2022-11-25 17:14:21,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2022-11-25 17:14:21,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:14:21,052 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:21,056 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:14:21,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:14:21,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:14:21 BasicIcfg [2022-11-25 17:14:21,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:14:21,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:14:21,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:14:21,060 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:14:21,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:14:04" (3/4) ... [2022-11-25 17:14:21,063 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:14:21,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 17:14:21,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 17:14:21,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 17:14:21,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-25 17:14:21,077 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-25 17:14:21,077 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:14:21,077 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:14:21,077 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:14:21,118 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:14:21,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:14:21,119 INFO L158 Benchmark]: Toolchain (without parser) took 17902.02ms. Allocated memory was 161.5MB in the beginning and 362.8MB in the end (delta: 201.3MB). Free memory was 129.7MB in the beginning and 249.6MB in the end (delta: -119.9MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2022-11-25 17:14:21,120 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:14:21,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.61ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 105.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 17:14:21,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.17ms. Allocated memory is still 161.5MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:14:21,121 INFO L158 Benchmark]: Boogie Preprocessor took 60.71ms. Allocated memory is still 161.5MB. Free memory was 103.4MB in the beginning and 102.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:14:21,121 INFO L158 Benchmark]: RCFGBuilder took 552.57ms. Allocated memory is still 161.5MB. Free memory was 102.1MB in the beginning and 85.9MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:14:21,122 INFO L158 Benchmark]: TraceAbstraction took 16520.35ms. Allocated memory was 161.5MB in the beginning and 362.8MB in the end (delta: 201.3MB). Free memory was 85.3MB in the beginning and 252.7MB in the end (delta: -167.4MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-11-25 17:14:21,122 INFO L158 Benchmark]: Witness Printer took 59.42ms. Allocated memory is still 362.8MB. Free memory was 252.7MB in the beginning and 249.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:14:21,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.61ms. Allocated memory is still 161.5MB. Free memory was 129.7MB in the beginning and 105.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.17ms. Allocated memory is still 161.5MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.71ms. Allocated memory is still 161.5MB. Free memory was 103.4MB in the beginning and 102.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 552.57ms. Allocated memory is still 161.5MB. Free memory was 102.1MB in the beginning and 85.9MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16520.35ms. Allocated memory was 161.5MB in the beginning and 362.8MB in the end (delta: 201.3MB). Free memory was 85.3MB in the beginning and 252.7MB in the end (delta: -167.4MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 59.42ms. Allocated memory is still 362.8MB. Free memory was 252.7MB in the beginning and 249.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 120 PlacesBefore, 42 PlacesAfterwards, 109 TransitionsBefore, 29 TransitionsAfterwards, 2382 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 119 TotalNumberOfCompositions, 4150 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2603, independent: 2509, independent conditional: 0, independent unconditional: 2509, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1694, independent: 1653, independent conditional: 0, independent unconditional: 1653, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1694, independent: 1630, independent conditional: 0, independent unconditional: 1630, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 201, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2603, independent: 856, independent conditional: 0, independent unconditional: 856, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 1694, unknown conditional: 0, unknown unconditional: 1694] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 786]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 147 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1011 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 752 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2676 IncrementalHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 51 mSDtfsCounter, 2676 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=346occurred in iteration=13, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 2151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:14:21,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9086f513-472e-4675-a051-1863168ca5d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE